Photographing method and folding screen equipment

Abstract

The invention provides a photographing method and a folding screen device, in the method, whether the folding screen device is in a folded state, a rear camera performs photographing, an outer screen front camera performs selfie, a rear camera performs photographing or an inner screen front camera performs photographing, and the folding screen device is in an unfolded state. When a user unfolds the folding screen device of the folding screen or turns over the folding screen device in the unfolded state, the folding screen device can turn on the inner screen front camera and the rear camera, and human face information shot by the inner screen front camera is compared with human face information shot by the rear camera. When the folding screen device determines that the face information shot by the rear camera is greater than the face information shot by the front camera, the folding screen device can start the rear selfie. Thus, the folding screen equipment can automatically enter the rear selfie mode no matter what state the folding screen equipment is in, user operation is simplified, and therefore user experience can be improved.

Description

Technical Field

[0001] The present application relates to the field of terminals and electronic technologies, and in particular to a photographing method and a folding screen device. Background Art

[0002] At present, foldable screen devices have one or more front cameras and a rear camera. With the development of foldable screen devices, the specifications of the rear cameras of foldable screen devices are constantly improving; and because the thickness of the foldable screen devices is getting thinner and thinner, the specifications of the front cameras cannot be continuously improved like the specifications of the rear cameras. The effect of the photos taken by the rear camera (for example, clarity, image quality, etc.) is better than that of the photos taken by the front camera. When users take selfies, in order to obtain better selfie effects, they need to use the rear camera to take selfies. However, at present, the operation of foldable screen devices to enter the rear camera selfie is not simple enough, which will affect the user experience.

[0003] Therefore, how to simplify the operation of taking selfies with the rear camera on foldable screen devices is an urgent problem to be solved. Summary of the invention

[0004] The present application provides a photographing method and a folding screen device, through which the folding screen device can automatically take selfies with the rear camera according to the state of the folding screen device, thereby simplifying the operation of the folding screen device entering the rear camera selfie and improving the user experience.

[0005] In a first aspect, the present application provides a photographing method, which can be applied to a folding screen device, wherein the folding screen device may include a first display screen and at least two cameras, wherein the first display screen can be folded into at least two display areas, wherein the at least two cameras may include a first front camera and a rear camera, wherein the first front camera may be located on the same side as the first display screen, and the rear camera may be located on the back of the first display screen, wherein the method may include: the folding screen device turns on one of the at least two cameras and displays a picture taken by one of the at least two cameras; receives and responds to a first operation of the user, and automatically sets the first front camera and the rear camera to be turned on; when the distance between the user and the rear camera is less than the distance between the user and the first front camera, the folding screen device displays the picture taken by the rear camera, and the picture taken by the rear camera includes a portrait of the user.

[0006] Through the method provided in the first aspect, the folding screen device can compare the distance between the user and the rear camera and the distance between the user and the first front camera by only receiving an operation from the user. By comparing the distance between the user and the rear camera and the distance between the user and the first front camera, it can be determined whether the user wants to take a rear selfie. When it is determined that the distance between the user and the rear camera is less than the distance between the user and the first front camera, the folding screen device can determine that the user wants to take a rear selfie, and then automatically switch to the rear selfie mode. In this way, user operations can be simplified, thereby improving user experience.

[0007] In combination with the first aspect, in a possible implementation, the folding screen device may further include a second display screen, and the second display screen may be located on the back of the first display screen.

[0008] In this way, the foldable screen device can display the rear selfie picture through the second display screen.

[0009] In combination with the first aspect, in a possible implementation manner, the folding screen device turns on one of the at least two cameras and displays a picture taken by the one of the at least two cameras, which may include:

[0010] The foldable screen device is in an unfolded state, the first front camera is turned on, and the image captured by the first front camera is displayed on the first display screen;

[0011] Receiving and responding to a first operation of a user, automatically setting the first front camera and the rear camera to be in an on state may include:

[0012] Receiving and responding to a user's flipping operation on the folding screen device, the folding screen device automatically turns on the rear camera;

[0013] When the distance between the user and the rear camera is smaller than the distance between the user and the first front camera, the folding screen device displays the picture taken by the rear camera, which may include:

[0014] When the distance between the user and the rear camera is less than the distance between the user and the first front camera, the folding screen device displays the image captured by the rear camera on the second display screen.

[0015] In this way, the folding screen device can automatically switch from the unfolded state and the front selfie state to the rear selfie state when detecting the user's flipping operation. And the rear selfie picture can be displayed on the second display screen. In this way, since the rear camera and the second display screen are located on the same side when in the unfolded state, it is convenient for the user to watch the rear selfie picture.

[0016] In combination with the first aspect, in a possible implementation, when the folding screen device automatically turns on the rear camera, the method may further include: the folding screen device displays the picture taken by the first front camera on the first display screen, and the picture taken by the rear camera is not displayed.

[0017] In this way, during the flipping process, the rear camera is only opened in the background, the user is not aware of it, and it does not affect the user's normal use of the shooting function of the folding screen device.

[0018] In combination with the first aspect, in a possible implementation manner, the folding screen device turns on one of the at least two cameras and displays a picture taken by the one of the at least two cameras, which may include:

[0019] The foldable screen device is in the unfolded state, the rear camera is turned on, and the image captured by the rear camera is displayed on the first display screen;

[0020] Receiving and responding to a first operation of a user, automatically setting the first front camera and the rear camera to be in an on state may include:

[0021] Receiving and responding to a user's flipping operation on the folding screen device, the folding screen device automatically turns on the first front camera;

[0022] When the distance between the user and the rear camera is smaller than the distance between the user and the first front camera, the folding screen device displays the picture taken by the rear camera, which may include:

[0023] When the distance between the user and the rear camera is less than the distance between the user and the first front camera, the folding screen device displays the image captured by the rear camera on the second display screen.

[0024] In this way, the folding screen device can be in the unfolded state, with the rear camera taking pictures and displaying the pictures taken by the rear camera on the first display screen, and when the user's flip operation is detected, it can automatically switch to the rear Selfie. And the rear Selfie picture can be displayed on the second display screen. In this way, since the rear camera and the second display screen are located on the same side in the unfolded state, it is convenient for the user to watch the rear Selfie picture.

[0025] In combination with the first aspect, in a possible implementation, when the folding screen device automatically turns on the first front camera, the method may further include: the folding screen device displays the picture taken by the rear camera on the first display screen, and the picture taken by the first front camera is not displayed.

[0026] In this way, during the user's flipping process, the first front camera is only opened in the background, and the user is not aware of it. The picture taken by the camera selected by the user when initially shooting is maintained, and the user's normal use of the shooting function of the folding screen device is not affected.

[0027] In combination with the first aspect, in a possible implementation, the at least two cameras further include a second front camera, and the second front camera and the second display screen are located on the same side. In this way, the folding screen device can also have multiple front cameras, enriching the product form of the folding screen device.

[0028] In combination with the first aspect, in a possible implementation manner, the folding screen device turns on one of the at least two cameras and displays a picture taken by the one of the at least two cameras, which may include:

[0029] The folding screen device is in a folded state, the first display screen is folded, the folding screen device turns on the second front camera, and displays the picture taken by the second front camera on the second display screen;

[0030] Receiving and responding to a first operation of a user, automatically setting the first front camera and the rear camera to be in an on state may include:

[0031] Receiving and responding to an operation by a user to switch the foldable screen device from a folded state to an unfolded state, the foldable screen device automatically turning on a first front camera and a rear camera;

[0032] When the distance between the user and the rear camera is smaller than the distance between the user and the first front camera, the folding screen device displays the picture taken by the rear camera, which may include:

[0033] When the distance between the user and the rear camera is smaller than the distance between the user and the first front camera, the folding screen device displays the image captured by the rear camera on the second display screen.

[0034] In this way, the foldable screen device can automatically switch from the folded state to the front selfie state when detecting the user's operation of switching the foldable screen device from the folded state to the unfolded state to the rear selfie state. And the rear selfie picture can be displayed on the second display screen. In this way, since the rear camera and the second display screen are located on the same side in the unfolded state, it is convenient for the user to watch the rear selfie picture.

[0035] In combination with the first aspect, in a possible implementation, when the folding screen device automatically turns on the first front camera and the rear camera, the method may further include: the folding screen device displays the picture taken by the first front camera on the first display screen, and the picture taken by the rear camera is not displayed.

[0036] In this way, after the user switches the foldable screen device from a folded state to an unfolded state, the rear camera is only opened in the background, the user is not aware of it, it does not affect the user's normal use of the shooting function of the foldable screen device, and it does not conflict with the existing logic of the foldable screen device.

[0037] In combination with the first aspect, in a possible implementation, the method may further include: receiving and responding to an operation by a user to switch the foldable screen device from a folded state to an unfolded state, the foldable screen device turning off the second front camera. In this way, after entering the rear selfie mode, the camera turned on in the background can be turned off, which can save power consumption of the foldable screen device.

[0038] In combination with the first aspect, in a possible implementation manner, the folding screen device turns on one of the at least two cameras and displays a picture taken by the one of the at least two cameras, which may include:

[0039] The folding screen device is in a folded state, the first display screen is folded, the folding screen device turns on the rear camera, and displays the image captured by the rear camera on the second display screen;

[0040] Receiving and responding to a first operation of a user, automatically setting the first front camera and the rear camera to be in an on state may include:

[0041] Receiving and responding to an operation by a user to switch the foldable screen device from a folded state to an unfolded state, the foldable screen device automatically turning on a first front camera;

[0042] When the distance between the user and the rear camera is smaller than the distance between the user and the first front camera, the folding screen device displays the picture taken by the rear camera, which may include:

[0043] When the distance between the user and the rear camera is less than the distance between the user and the first front camera, the folding screen device displays the image captured by the rear camera on the second display screen.

[0044] In this way, the foldable screen device can automatically switch to the rear selfie mode when it detects that the user switches the foldable screen device from the folded state to the unfolded state. The rear selfie image can be displayed on the second display screen. In this way, since the rear camera and the second display screen are located on the same side in the unfolded state, the user can conveniently view the rear selfie image.

[0045] In combination with the first aspect, in a possible implementation, when the folding screen device automatically turns on the first front camera, the method may further include: the folding screen device displays the picture taken by the rear camera on the first display screen, and the picture taken by the first front camera is not displayed.

[0046] In this way, after the user switches the foldable screen device from a folded state to an unfolded state, the first front camera is only opened in the background, the user is not aware of it, it does not affect the user's normal use of the shooting function of the foldable screen device, and it does not conflict with the existing logic of the foldable screen device.

[0047] In combination with the first aspect, in a possible implementation, the at least two display areas include a first display area and a second display area, and when the folding screen device is in a folded state, the second display area is located on the back of the first display area, and the first front camera and the first display area are located on the same side. In this way, the folding screen device can also be an outward-folding folding screen device.

[0048] In combination with the first aspect, in a possible implementation manner, the folding screen device turns on one of the at least two cameras and displays a picture taken by the one of the at least two cameras, which may include:

[0049] The folding screen device is in an unfolded state, the first front camera is turned on, and the image captured by the first front camera is displayed on the first display screen;

[0050] Receiving and responding to a first operation of a user, automatically setting the first front camera and the rear camera to be in an on state may include:

[0051] Receiving and responding to an operation by a user to switch the foldable screen device from a folded state to an unfolded state, the foldable screen device automatically turning on a rear camera;

[0052] When the distance between the user and the rear camera is smaller than the distance between the user and the first front camera, the folding screen device displays the picture taken by the rear camera, which may include:

[0053] When the distance between the user and the rear camera is less than the distance between the user and the first front camera, the folding screen device displays the picture taken by the rear camera in the second display area.

[0054] In this way, when the folding screen device is in the unfolded state and the front camera is taking a selfie, and the picture taken by the front camera is displayed on the first display screen, after detecting that the user switches the folding screen from the unfolded state to the folded state, it automatically switches to the rear camera selfie. And the picture of the rear camera selfie can be displayed in the second display area. In this way, since the rear camera and the second display area are located on the same side when the outward folding screen device is in the folded state, it is convenient for the user to watch the picture of the rear camera selfie.

[0055] In combination with the first aspect, in a possible implementation manner, the folding screen device turns on one of the at least two cameras and displays a picture taken by the one of the at least two cameras, which may include:

[0056] The folding screen device is in the folded state, the first front camera is turned on, and the image captured by the first front camera is displayed in the first display area;

[0057] Receiving and responding to a first operation of a user, automatically setting the first front camera and the rear camera to be in an on state may include:

[0058] Receiving and responding to a user's flipping operation on the folding screen device, the folding screen device automatically turns on the rear camera;

[0059] When the distance between the user and the rear camera is smaller than the distance between the user and the first front camera, the folding screen device displays the picture taken by the rear camera, which may include:

[0060] When the distance between the user and the rear camera is smaller than the distance between the user and the first front camera, the folding screen device displays the image captured by the rear camera in the second display area.

[0061] In this way, when the folding screen device is in the folded state, when the front camera is taking a selfie, and the picture taken by the front camera is displayed in the first display area, after detecting the user's flipping operation, it automatically switches to the rear camera selfie. And the picture of the rear camera selfie can be displayed in the second display area. In this way, since the rear camera and the second display area are located on the same side when the outward folding screen device is in the folded state, it is convenient for the user to watch the picture of the rear camera selfie.

[0062] In combination with the first aspect, in a possible implementation manner, when the folding screen device automatically turns on the rear camera, the method may further include:

[0063] The folding screen device displays the picture taken by the first front camera in the first display area, and the picture taken by the rear camera is not displayed or is displayed in the second display area.

[0064] In this way, during the user's flipping process, the rear camera is only turned on in the background without the user's awareness, which does not affect the user's normal use of the folding screen device's shooting function. Or the picture taken by the rear camera is displayed in another display area, which does not affect the user's viewing of the picture taken by the camera selected by the user.

[0065] In combination with the first aspect, in a possible implementation manner, the folding screen device turns on one of the at least two cameras and displays a picture taken by the one of the at least two cameras, which may include:

[0066] The foldable screen device is in the folded state, the rear camera is turned on, and the images captured by the rear and front cameras are displayed in the first display area;

[0067] Receiving and responding to a first operation of a user, automatically setting the first front camera and the rear camera to be in an on state may include:

[0068] Receiving and responding to a user's flipping operation on the folding screen device, the folding screen device automatically turns on the first front camera;

[0069] When the distance between the user and the rear camera is smaller than the distance between the user and the first front camera, the folding screen device displays the picture taken by the rear camera, which may include:

[0070] When the distance between the user and the rear camera is less than the distance between the user and the first front camera, the folding screen device displays the picture taken by the rear camera in the second display area.

[0071] In this way, when the folding screen device is in the folded state, the rear camera is shooting, and the picture shot by the rear camera is displayed in the first display area, after detecting the user's flipping operation, it automatically switches to the rear selfie. And the picture of the rear selfie can be displayed in the second display area. In this way, since the rear camera and the second display area are located on the same side when the outward folding screen device is in the folded state, it is convenient for the user to watch the picture of the rear selfie.

[0072] In combination with the first aspect, in a possible implementation, when the folding screen device automatically turns on the first front camera, the method also includes: the folding screen device displays the picture taken by the rear camera in the first display area, and the picture taken by the first front camera is not displayed or is displayed in the second display area.

[0073] In this way, during the flipping process, the front camera is only turned on in the background without the user noticing, which does not affect the user's normal use of the shooting function of the folding screen device. Alternatively, the picture taken by the front camera is displayed in another display area, which does not affect the user's viewing of the picture taken by the camera selected by the user.

[0074] In combination with the first aspect, in a possible implementation, the method may also include: when the distance between the user and the rear camera is less than the distance between the user and the first front camera, the folding screen device powers off the first display area, so that the first display area is in a screen-off state.

[0075] In this way, the power consumption of the electronic device can be saved.

[0076] In combination with the first aspect, in a possible implementation manner, the method may further include:

[0077] When the distance between the user and the rear camera is smaller than the distance between the user and the first front camera, the folding screen device turns off the first front camera. In this way, the power consumption of the electronic device can be saved.

[0078] In combination with the first aspect, in a possible implementation, when the distance between the user and the rear camera is less than the distance between the user and the first front camera, after the folding screen device displays the picture taken by the rear camera, the method may further include: after detecting a flip operation on the folding screen device, turning on the first front camera; when the distance between the user and the rear camera is greater than the distance between the user and the first front camera, turning off the rear camera and displaying the picture taken by the first front camera on the first display screen. In this way, the folding screen device can automatically exit the rear selfie mode.

[0079] In combination with the first aspect, in a possible implementation, when the first front camera and the rear camera are in an on state, the method may further include: when the size of a face in a picture taken by the first front camera is smaller than the size of a face in a picture taken by the rear camera, determining that the distance between the user and the rear camera is smaller than the distance between the user and the first front camera; when the size of a face in a picture taken by the first front camera is larger than the size of a face in a picture taken by the rear camera, determining that the distance between the user and the rear camera is greater than the distance between the user and the first front camera.

[0080] In a second aspect, a folding screen device is provided, which may include: at least one display screen, at least two cameras, one or more processors, and one or more memories; at least one display screen includes a first display screen, which is foldable, and the first display screen, at least two cameras, and one or more memories are respectively coupled to the one or more processors; the one or more memories are used to store computer program codes, and the computer program codes include computer instructions; when the computer instructions run on the processor, the folding screen device executes the method described in any possible implementation of the first aspect above.

[0081] In a third aspect, the present application provides a folding screen device, which may include one or more functional modules, and the one or more functional modules execute the method in any possible implementation of the first aspect above.

[0082] In a fourth aspect, the present application provides a computer-readable storage medium, comprising computer instructions, which, when executed on a computer, enable the computer to execute a method in any possible implementation of the first aspect.

[0083] In a fifth aspect, the present application provides a computer program product, which, when executed on a computer, enables the computer to execute a method in any possible implementation of the first aspect.

[0084] In a sixth aspect, the present application provides a chip or a chip system, which is applied to an electronic device, including a processing circuit and an interface circuit, the interface circuit being used to receive code instructions and transmit them to the processing circuit, and the processing circuit being used to run the code instructions to execute the method in any possible implementation of the first aspect above.

[0085] It can be understood that the folding screen device provided in the second and third aspects, the computer-readable storage medium provided in the fourth aspect, the computer program product provided in the fifth aspect, and the chip or chip system provided in the sixth aspect are all used to execute the method provided in the present application. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding method, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0086] Figure 1 This is a schematic diagram of a product form of a folding screen device provided in an embodiment of the present application;

[0087] Figure 2A is a set of user interface schematic diagrams of a folding screen device provided in an embodiment of the present application;

[0088] Figure 2B This is another set of user interface schematic diagrams of the folding screen device provided in the embodiment of the present application;

[0089] Figure 3A This is another set of user interface schematic diagrams of the folding screen device provided in the embodiment of the present application;

[0090] Figure 3B is another set of user interface schematic diagrams of the folding screen device provided in an embodiment of the present application;

[0091] Figure 4 It is a flowchart of a shooting method provided in an embodiment of the present application;

[0092] Figure 5A This is a schematic diagram of a user interface related to a folding screen device provided in an embodiment of the present application entering a rear camera selfie from state 1;

[0093] Figure 5B is a schematic diagram of a scene captured by a folding screen device provided in an embodiment of the present application using a rear camera in a multi-person scene;

[0094] Figure 5C is a schematic diagram of a face image with different zoom ratios provided in an embodiment of the present application;

[0095] Figure 5D is a schematic diagram of face images of different picture sizes provided in an embodiment of the present application;

[0096] Figure 6 It is a flowchart of a shooting method provided in an embodiment of the present application;

[0097] Figure 7 This is a schematic diagram of a user interface related to a folding screen device provided in an embodiment of the present application entering a rear camera selfie from state 2;

[0098] Figure 8 It is a flowchart of a shooting method provided in an embodiment of the present application;

[0099] Fig. 9 A schematic diagram of a set of user interfaces for a folding screen device provided in an embodiment of the present application to enter a rear camera selfie from state 3;

[0100] Fig.10 It is a flowchart of a shooting method provided in an embodiment of the present application;

[0101] Fig.11 A schematic diagram of a set of user interfaces for a folding screen device provided in an embodiment of the present application to enter a rear camera selfie from state 4;

[0102] Fig.12 It is a flowchart of a shooting method provided in an embodiment of the present application;

[0103] Fig.13 This is a schematic diagram of a user interface for a folding screen device to exit a rear camera selfie according to an embodiment of the present application;

[0104] Fig.14 This is a schematic diagram of the product form of an outward-folding folding screen device provided in an embodiment of the present application;

[0105] Fig.15 It is a schematic diagram of the folding screen device provided in an embodiment of the present application automatically entering the rear selfie;

[0106] Fig.16 It is a schematic diagram of the folding screen device provided in an embodiment of the present application automatically entering the rear selfie;

[0107] Fig.17 It is a schematic diagram of the folding screen device provided in an embodiment of the present application automatically entering the rear selfie;

[0108] Fig.18 is a schematic diagram of another product form of the folding screen device provided in an embodiment of the present application;

[0109] Fig.19 It is a schematic diagram of the folding screen device provided in an embodiment of the present application automatically entering the rear selfie;

[0110] Fig. 20 It is a schematic diagram of the folding screen device provided in an embodiment of the present application automatically entering the rear selfie;

[0111] Fig.21is a schematic diagram of the structure of a folding screen device provided in an embodiment of the present application;

[0112] Fig. 22 This is a schematic diagram of the software and hardware architecture of a camera service on a folding screen device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0113] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0114] The terms used in the following embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to be used as limitations to the present application. As used in the specification and the appended claims of the present application, the singular expressions "one", "a kind of", "said", "above", "the" and "this" are intended to also include plural expressions, unless there is a clear contrary indication in the context. The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as implying or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. "First" and "second" etc. are used to distinguish different objects, rather than for describing a specific order of objects. For example, the first object and the second object are used to distinguish different objects, rather than for describing a specific order of objects.

[0115] In the description of the embodiments of the present application, unless otherwise specified, "multiple" means two or more than two. For example, multiple processing units refer to two or more processing units; multiple systems refer to two or more systems.

[0116] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or related scheme described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0117] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0118] The term "user interface (UI)" in the following embodiments of the present application refers to a medium interface for interaction and information exchange between an application or operating system and a user, which realizes the conversion between the internal form of information and the form acceptable to the user. The user interface is a source code written in a specific computer language such as Java and extensible markup language (XML). The interface source code is parsed and rendered on an electronic device, and finally presented as content that can be recognized by the user. The commonly used form of user interface is a graphical user interface (GUI), which refers to a user interface related to computer operation displayed in a graphical manner. It can be a visual interface element such as text, icons, buttons, menus, tabs, text boxes, dialog boxes, status bars, navigation bars, widgets, etc. displayed on the display screen of an electronic device.

[0119] The embodiment of the present application provides a shooting method, which can be applied to a folding screen device. The folding screen device includes but is not limited to an inward-folding folding screen device, an outward-folding folding screen device, and a vertical-folding folding screen device.

[0120] The following will first introduce an inward-folding folding screen device, and take the inward-folding folding screen device as an example to introduce in detail a shooting method provided in an embodiment of the present application.

[0121] In some possible implementations, the folding screen device provided in the embodiments of the present application may be an inward-folding folding screen device. The folding screen device has at least two display screens, and the at least two display screens may include a first display screen and a second display screen. The first display screen may be folded into two display areas, for example, a first display area and a second display area. The second display screen may be located on the back of the first display screen.

[0122] The folding screen device may include at least three camera groups, for example, a first front camera, a second front camera, and a rear camera. The first front camera may be located on the same side as the first display screen. The second front camera may be located on the same side as the second display screen. The rear camera may be located on the back of the first display screen.

[0123] The first front camera may include one or more cameras, the second front camera may include one or more cameras, and the rear camera may include one or more cameras. The embodiment of the present application does not limit the number of cameras included in the first front camera, the second front camera, and the rear camera.

[0124] In the embodiment of the present application, the first front camera can be called an inner-screen front camera, and the second front camera can be called an outer-screen front camera.

[0125] For example, the product form of the folding screen device provided in the embodiment of the present application can be as follows: Figure 1 shown. Figure 1 A schematic diagram of a product form of a folding screen device 100 is shown as an example.

[0126] Figure 1 (a) and (b) are schematic diagrams of the folding screen device 100 when it is folded. Figure 1 As shown in (a) and (b) in FIG. 1 , the folding screen device 100 may include a display screen 101 and a display screen 102. When the folding screen device 100 is in a folded state, the display screen 102 is invisible to the user, and the display screen 101 is visible to the user. The folding screen device 100 may also include a camera 103, and the camera 103 may be located on the same side as the display screen 102. The folding screen device 100 may be folded or unfolded along the folding screen. The folding screen device 100 may be an inward-folding folding screen device 100.

[0127] Figure 1 (c) and (d) in FIG. 1 are schematic diagrams of the folding screen device 100 when it is unfolded. Figure 1 As shown in (c) and (d) in FIG. 1 , the folding screen device 100 further includes a camera 104 and a camera 105. The camera 104 is on the back of the display screen 102, and the display screen 101 is on the back of the display screen 102. Similarly, the display screen 102 can be divided into a display area 1021 and a display area 1022 with the folding edge as the dividing line. The camera 105 can be on the same side as the display area 1021. The back of the display area 1021 can be the display screen 101, and the back of the display area 1022 can be and the camera 104.

[0128] Optionally, in some other examples, the camera 105 may also be on the same side as the display area 1022. Figure 1 The positions of the external screen front camera, the internal screen front camera and the rear camera in the folding screen device 100 shown in the figure are for illustration only. The embodiments of the present application do not limit the specific positions of the external screen front camera, the internal screen front camera and the rear camera in the folding screen device 100.

[0129] For example, the folding screen device 100 in the embodiment of the present application can be a mobile phone, a tablet computer, a desktop computer, a laptop computer, a handheld computer, etc., which includes the above-mentioned folding screen, one or more front cameras, and a rear camera. The embodiment of the present application does not impose any special restrictions on the specific type and specific form of the folding screen device 100.

[0130] In the embodiment of the present application, when the camera of the folding screen device 100 (such as the external screen front camera, the internal screen front camera, and the rear camera) captures the user's face and displays the facial information captured by the camera in the preview interface of the display screen, the process is called a selfie. The user refers to the user who operates the folding screen device 100, or refers to the user on the same side of the display screen when the folding screen device 100 is in the bright screen state. According to the camera used in the selfie process, the embodiment of the present application refers to the process of taking a selfie using the external screen front camera as the external screen front selfie, the process of taking a selfie using the rear camera as the rear selfie, and the process of taking a selfie using the internal screen front camera as the internal screen front selfie.

[0131] When the folding screen device 100 is in a folded state, the inner screen of the folding screen device 100 may be in a screen-off state (or referred to as a screen-off state). The user may select the outer screen front camera to take a selfie or the rear camera to take a picture of the area on the back of the outer screen in the photo-taking interface displayed on the outer screen. When the folding screen device 100 is in an unfolded state, the outer screen of the folding screen device 100 may be in a screen-off state, and the user may select the inner screen front camera to take a selfie or the rear camera to take a picture of the area on the back of the inner screen in the photo-taking interface displayed on the inner screen. Alternatively, the user may also choose to take a selfie with the rear camera. When taking a selfie with the rear camera, the folding screen device may display a preview image captured by the rear camera on the outer screen.

[0132] The folding screen device 100 can switch to the rear camera selfie in different states, and display the preview picture taken by the rear camera on the external screen. The following describes in detail the specific process of the folding screen device 100 switching to the rear camera selfie in the folded state external screen front camera selfie, folded state rear camera shooting, unfolded state internal screen front camera, unfolded state rear camera shooting, and displaying the preview picture taken by the rear camera on the external screen.

[0133] In a possible implementation, the specific process of the folding screen device 100 switching from taking a selfie with the front camera of the outer screen in the folded state to taking a selfie with the rear camera and displaying a preview image taken by the rear camera on the outer screen can be as follows: Figure 2A As shown. Figure 2AAs shown in (a), the folding screen device 100 is in a folded state, the outer screen is in a bright screen state, and the inner screen is in a dark screen state. The outer screen front camera of the folding screen device 100 is turned on, and the preview screen 206 captured by the outer screen front camera is displayed in the preview interface 200 of the outer screen. The preview interface 200 may include an echo control 201, a shooting control 202, a camera conversion control 203, one or more shooting mode controls (for example, a night scene shooting mode control 204A, a portrait shooting mode control 240B, a shooting mode control 204C, a video recording mode control 204D, and a more mode control 204E) and a rear selfie switch control 205 for entering the rear camera selfie mode.

[0134] Among them, Figure 2A As shown in (a), the control 204C of the photo mode is selected, and the folding screen device 100 is in the photo mode. The preview interface 200 displays a preview screen 206 captured by the external screen front camera in the photo mode. The echo control 201 can be used to trigger the display of the captured image or video. The shooting control 202 can be used to save the image captured by the camera. The camera conversion control 203 can be used to switch the camera for the folding screen to capture images (for example, when the folding screen device 100 is in the folded state, the external screen front camera switches to the rear camera, and the rear camera switches to the external screen front camera).

[0135] The control of the shooting mode can be used to trigger the image processing process corresponding to the shooting mode. For example, the control 204A of the night scene shooting mode can be used to trigger the increase of brightness and color richness in the captured image. The control 204B of the portrait shooting mode can be used to trigger the folding screen device 100 to beautify the portrait in the captured image. The control 204C of the photo mode can be used to trigger the folding screen device 100 to capture images using default parameters, and use the default image processing process to process the images captured by the camera (for example, the front camera of the external screen). The control of the video recording mode can be used to trigger the folding screen device 100 to record a video through a camera (for example, the front camera of the external screen). The more mode control 204E can be used to trigger the folding screen device 100 to display more shooting mode controls.

[0136] like Figure 2A As shown in (a) in the figure, the current user is taking a selfie with the front camera of the external screen. When the user wants to switch to the rear camera to take a selfie, the user needs to click the rear selfie switch control 205 in the preview interface 200 and unfold the folding screen device 100. In response to the user clicking the rear selfie switch control 205 and unfolding the folding screen device 100, the folding screen device 100 can turn on the rear camera and turn off the front camera of the external screen, and display the preview picture taken by the rear camera on the external screen.

[0137] like Figure 2A As shown in (b) in the figure, the folding screen device 100 is in the unfolded state, the inner screen is in the off state, and the outer screen is in the on state. The outer screen displays a preview interface 210, and the preview interface 210 displays a preview screen 207 captured by the rear camera. The preview screen 207 contains the facial information of the user captured by the rear camera. The preview interface 210 may also include an echo control 201, a shooting control 202, a camera conversion control 203, one or more shooting mode controls, and a rear selfie switch control 205 for entering the rear camera selfie mode. The echo control 201, the shooting control 202, the camera conversion control 203, one or more shooting mode controls, and the rear selfie switch control 205 for entering the rear camera selfie mode, etc., can be referred to above. Figure 2A The description of (a) in FIG. 2 is not repeated here.

[0138] In a possible implementation, the specific process of the folding screen device 100 switching from taking photos with the rear camera in the folded state to taking selfies with the rear camera and displaying a preview image taken by the rear camera on the external screen can be as follows: Figure 2B As shown. Figure 2B As shown in (a), the folding screen device 100 is in a folded state, the outer screen is in a bright state, the inner screen is in an off state, the rear camera is turned on, and a preview interface 200 is displayed on the outer screen. The preview interface 200 may include a preview screen 208 captured by the rear camera.

[0139] At this time, although the rear camera of the folding screen device 100 is turned on and is capturing images, the user's face is not within the shooting range of the rear camera, and the rear camera cannot take selfies. The folding screen device 100 needs to be switched to the unfolded state, and the rear camera is facing the user's face, so that the rear camera can capture the user's facial information. For the folding screen device 100, the existing logic is that when the folding screen device 100 is switched from the folded state to the unfolded state, the inner screen will switch from the off screen state to the bright screen state, and the outer screen will switch from the bright screen state to the off screen state. However, when taking a selfie with the rear camera, the user cannot see the preview screen displayed on the inner screen, and only the preview screen displayed on the outer screen can be seen by the user. Therefore, in order not to conflict with the existing logic, when the user needs to take a selfie with the rear camera, and the preview screen captured by the rear camera is displayed on the outer screen, the user needs to click the rear selfie switch control 205 and unfold the folding screen device 100.

[0140] In response to the user operation, the folding screen device 100 may display the following Figure 2BThe preview interface 210 shown in (b) in FIG. The preview interface 210 displays a preview screen 207 captured by the rear camera. The preview screen 207 includes the user's face information captured by the rear camera.

[0141] like Figure 2B As shown in (b), the folding screen device 100 is in the unfolded state, the inner screen is in the off state, and the outer screen is in the on state.

[0142] about Figure 2B For details of (b) in Figure 2A The description of (b) in FIG. 1 is not repeated here.

[0143] In a possible implementation, the specific process of the folding screen device 100 switching from taking a selfie with the front camera of the inner screen in the unfolded state to taking a selfie with the rear camera and displaying a preview image taken by the rear camera on the outer screen can be as follows: Figure 3A As shown. Figure 3A As shown in (a) in the figure, the folding screen device 100 is in the unfolded state, the inner screen is in the screen-on state, and the outer screen is in the screen-off state. The inner screen front camera of the folding screen device 100 is turned on, and the preview screen 301 captured by the inner screen front camera is displayed in the preview interface 300 of the inner screen. The preview interface 300 may also include an echo control 201, a shooting control 202, a camera conversion control 203, one or more shooting mode controls, and a rear selfie switch control 205 for entering the rear camera selfie mode. The echo control 201, the shooting control 202, the camera conversion control 203, one or more shooting mode controls, and the rear selfie switch control 205 for entering the rear camera selfie mode can be referred to above. Figure 2A The description of (a) in FIG. 2 is not repeated here.

[0144] like Figure 3A As shown in (a) in the figure, the current user is taking a selfie with the front camera of the inner screen. When the user wants to switch to the rear camera to take a selfie, the user needs to click the rear selfie switch control 205 in the preview interface 300 and flip the folding screen device 100. That is, the rear camera and the external screen of the folding screen device 100 are facing the user, the rear camera can capture the user's face, and the external screen is visible to the user. In response to the user clicking the rear selfie switch control 205 and unfolding the folding screen device 100, the folding screen device 100 can turn on the rear camera, turn off the front camera of the inner screen, and display the preview picture taken by the rear camera on the external screen.

[0145] like Figure 3AAs shown in (b) in FIG. 1 , the folding screen device 100 is in the unfolded state, the inner screen is in the off state, and the outer screen is in the on state. The outer screen displays a preview interface 210, and the preview interface 210 displays a preview screen 207 captured by the rear camera. The preview screen 207 includes the user's face information captured by the rear camera.

[0146] about Figure 3A For details of (b) in Figure 2A The description of (b) in FIG. 1 is not repeated here.

[0147] In a possible implementation, the specific process of the folding screen device 100 taking a photo with the rear camera in the unfolded state, switching to taking a selfie with the rear camera, and displaying a preview image taken by the rear camera on the external screen can be as follows: Figure 3B As shown. Figure 3B As shown in (a) in the figure, the folding screen device 100 is in the unfolded state, the inner screen is in the bright screen state, and the outer screen is in the off screen state. The rear camera of the folding screen device 100 is turned on, and the preview screen 208 captured by the rear camera can be displayed in the preview interface 310 of the inner screen. The preview interface 310 can also include an echo control 201, a shooting control 202, a camera conversion control 203, one or more shooting mode controls, and a rear selfie switch control 205 for entering the rear camera selfie mode. The echo control 201, the shooting control 202, the camera conversion control 203, one or more shooting mode controls, and the rear selfie switch control 205 for entering the rear camera selfie mode can be referred to above. Figure 2A The description of (a) in FIG. 2 is not repeated here.

[0148] like Figure 3B As shown in (a) in the figure, the current user is taking pictures with the rear camera. When the user wants to switch to the rear camera to take a selfie, the user needs to click the rear selfie switch control 205 in the preview interface 300 and flip the folding screen device 100. In response to the user clicking the rear selfie switch control 205 and unfolding the folding screen device 100, the folding screen device 100 can display the preview picture taken by the rear camera on the external screen.

[0149] like Figure 3B As shown in (b) in FIG. 1 , the folding screen device 100 is in the unfolded state, the inner screen is in the off state, and the outer screen is in the on state. The outer screen displays a preview interface 210, and the preview interface 210 displays a preview screen 207 captured by the rear camera. The preview screen 207 includes the user's face information captured by the rear camera.

[0150] about Figure 3B For details of (b) in Figure 2AThe description of (b) in FIG. 1 is not repeated here.

[0151] In the above Figure 2A , Figure 2B , Figure 3A as well as Figure 3B In the process of the folding screen device 100 switching from different scenes to the rear selfie, the user must click the control to enter the rear selfie and change the posture of the folding screen device (for example, from the folded state to the unfolded state, flip the folding screen), and the folding screen device 100 will enter the rear selfie mode. This will increase the operation steps and affect the user experience.

[0152] In addition, the camera application home page of the folding screen device 100 needs to add a control for entering the rear selfie, which makes the layout of the camera application home page not concise enough. In some folding screen devices, the control for entering the rear selfie in the camera application home page is not easy for users to find. This will affect the user's experience of switching the folding screen device to the rear selfie.

[0153] An embodiment of the present application provides a shooting method, which is applied to a folding screen device. The method may include: the folding screen device 100 detects a switch from a first state to a second state, the folding screen device determines that the facial information collected by the rear camera is greater than the facial information collected by the first camera head, the folding screen device 100 turns off the first camera, and displays the facial information captured by the rear camera on an external screen.

[0154] The first state may include at least one of the following:

[0155] State 1: The foldable screen device 100 is in the folded state, the inner screen is in the off state, the outer screen is in the on state, the outer screen front camera is turned on, and the outer screen displays the face information captured by the outer screen front camera. Figure 2A The folding screen device 100 shown in (a) .

[0156] State 2: The folding screen device 100 is in the folded state, the inner screen is in the off state, the outer screen is in the on state, the rear camera is turned on, and the outer screen displays a preview of the user's opposite side captured by the rear camera. Figure 2B The folding screen device 100 shown in (a) .

[0157] State 3: The foldable screen device 100 is in the unfolded state, the inner screen is in the on state, the outer screen is in the off state, the inner screen front camera is turned on, and the inner screen displays a preview image captured by the inner screen front camera. Figure 3A The folding screen device 100 shown in (a) .

[0158] State 4: The foldable screen device 100 is in the unfolded state, the inner screen is in the on-screen state, the outer screen is in the off-screen state, the rear camera is turned on, and the inner screen displays a preview image of the user's opposite side captured by the rear camera. Figure 3B The folding screen device 100 shown in (a) .

[0159] Among them, the second state can be that the folding screen device is in an unfolded state and the rear camera is facing the user.

[0160] Among them, the first camera is an internal screen front camera or an external screen front camera.

[0161] Through the method provided in the embodiment of the present application, the user does not need to click on the control for entering the rear Selfie in the folding screen device 100. The folding screen device 100 can automatically and intelligently enter the rear self-timer according to the detected state change and the size of the face information captured by the rear camera. In this way, user operations can be simplified and the user experience can be improved.

[0162] The following will describe in detail the specific process of the folding screen device 100 entering the rear-facing selfie when switching to the second state when the first state is the above-mentioned state 1, state 2, state 3, and state 4.

[0163] Figure 4 , Figure 5A The specific process of the folding screen device 100 entering the rear selfie mode when the folding screen device 100 switches from state 1 to the second state is described.

[0164] Figure 4 A shooting method provided by an embodiment of the present application is exemplarily shown. Figure 4 As shown, when the folding screen device 100 switches from the above state 1 to the second state, a shooting method provided by an embodiment of the present application may include the following steps:

[0165] S401, the folding screen device 100 is in a folded state, the inner screen is in an off state, the outer screen is in an on state, the folding screen device 100 turns on the outer screen front camera, and displays a preview interface 1 on the outer screen. The preview interface 1 displays a preview picture 1 captured by the outer screen front camera.

[0166] The folding screen device 100 is in a folded state. In the folded state, the outer screen of the folding screen device 100 is powered on and the inner screen is powered off. Therefore, in the folded state, the outer screen of the folding screen device 100 is in a bright screen state and the inner screen is in a dark screen state.

[0167] When the user clicks the icon of the camera application in the desktop displayed on the external screen, in response to the user operation, the folding screen device 100 can display a preview interface of the camera application. The preview interface can be as follows Figure 5A(a) shows a preview interface 200. For details about the preview interface 200, please refer to the above description of Figure 2A (a) Description. A preview screen 206 captured by the external screen front camera is displayed in the preview interface 200. That is, at this time, the folding screen device 100 turns on the external screen front camera. Of course, the user can also use the rear camera to shoot. For example, the user can click the camera conversion control 203. In response to the user operation, the folding screen device 100 can power off the external screen front camera, power on the rear camera, and start shooting with the rear camera. For scenes shot with the rear camera when the folding screen device 100 is in the folded state, please refer to the following description. Figure 6 and Figure 7 The description of is not repeated here.

[0168] That is, currently, the folding screen device 100 is in the above-mentioned state 1.

[0169] S402. Based on the user's unfolding operation, the folding screen device 100 switches from a folded state to an unfolded state, the inner screen switches from an off state to a bright state, the outer screen switches from a bright state to an off state, the inner screen front camera and the rear camera are turned on, and a preview interface 2 is displayed on the inner screen. The preview interface 2 displays a preview screen 2 captured by the inner screen front camera.

[0170] The foldable screen device 100 can switch from a folded state to an unfolded state based on the user's unfolding operation. During the unfolding process, the foldable screen device 100 can detect changes in posture. When the foldable screen device 100 detects that the posture of the foldable screen device 100 changes from a folded state to an unfolded state, the foldable screen device 100 can power on the inner screen and power off the outer screen. That is, the inner screen of the foldable screen device 100 switches from an off-screen state to a bright-screen state, and the outer screen switches from a bright-screen state to an off-screen state. For example, Figure 5A As shown in (b), the folding screen device 100 detects that the state changes from the folded state to the unfolded state, and the inner screen of the folding screen device 100 switches from the off state to the bright screen state, and the outer screen switches from the bright screen state to the off state.

[0171] In a possible implementation, the folding screen device 100 is used as Figure 1Taking the form shown in as an example, the folding screen device 100 can determine whether it is currently in a folded state or an unfolded state based on the angle between the display area 1021 and the display area 1022 of the inner screen (i.e., the folding angle). For example, when the folding screen device 100 is in a folded state, the angle between the display area 1021 and the display area 1022 (i.e., the folding angle) α∈[0°, P]. When the folding screen device 100 is in an unfolded state, the angle between the display area 1021 and the display area 1022 (i.e., the folding angle) α∈(P, 180°]. Among them, 0°<P<180°.

[0172] In some feasible examples, one or more gyroscope sensors may be present in the folding screen device 100, and the folding screen device 100 may detect the angle between the display area 1021 and the display area 1022 of the inner screen through one or more gyroscope sensors. When the folding screen device 100 detects the angle α∈[0°, P] between the display area 1021 and the display area 1022 through one or more gyroscope sensors, the folding screen device 100 determines that it is in a folded state. When the folding screen device 100 detects the angle α∈(P, 180°] between the display area 1021 and the display area 1022 through one or more gyroscope sensors, the folding screen device 100 determines that it is in an unfolded state.

[0173] Optionally, in other feasible examples, the folding screen device 100 can detect the angle between the display area 1021 and the display area 1022 through one or more gyroscope sensors and one or more other sensors. For example, the folding screen device 100 can detect the angle between the display area 1021 and the display area 1022 through one or more gyroscope sensors and an acceleration sensor.

[0174] Optionally, in some feasible examples, there may be one or more Hall sensors in the folding screen device 100, and the folding screen device 100 may detect the angle between the display area 1021 and the display area 1022 of the inner screen through one or more Hall sensors.

[0175] Optionally, in some other feasible examples, an angle sensor is installed at the folding portion of the folding edge of the folding screen device 100 (for example, on the hinge), and the folding screen device 100 can measure the angle between the display area 1021 and the display area 1022 by setting the angle sensor at the folding portion.

[0176] The embodiment of the present application does not limit the specific manner in which the folding screen device 100 detects the folding screen posture (folded state and unfolded state).

[0177] When the folding screen device 100 is unfolded from the folding screen to the unfolded state, the folding screen device 100 can also turn on the inner screen front camera and the rear camera, and turn off the outer screen front camera. The folding screen device 100 can display a preview interface 2 on the inner screen, and the preview interface 2 displays a preview image 2 captured by the inner screen front camera. For example, the preview interface 2 can be Figure 3A In the preview interface 300 shown in FIG. 1 , the preview screen 2 may be the preview screen 301 displayed in the preview interface 300. For details, please refer to the above description of Figure 3A The description of (a) will not be repeated here.

[0178] S403, the folding screen device 100 determines whether the facial information captured by the rear camera is greater than the facial information captured by the internal screen front camera. If so, execute step S404; if not, execute step S405.

[0179] The rear camera and the inner screen front camera of the folding screen device 100 are both turned on and can take pictures. When the user points the inner screen toward the user's face, the inner screen front camera can capture the user's facial information. When the user points the rear camera toward the face, the rear camera can capture the user's facial information. Since the folding screen device 100 cannot directly determine whether the rear camera is facing the user's face or the front camera is facing the face based on the change in the posture of the folding screen device 100, the folding screen device 100 needs to compare the facial information captured by the rear camera with the facial information captured by the inner screen front camera. When the folding screen device 100 determines that the facial information captured by the rear camera is greater than the facial information captured by the inner screen front camera, the folding screen device 100 can turn on the rear selfie, that is, execute the following step S404. When the folding screen device 100 determines that the facial information captured by the rear camera is less than the facial information captured by the inner screen front camera, the folding screen device 100 may not enter the rear selfie, and execute the following step S405.

[0180] When the rear camera captures face information and the image captured by the internal screen front camera does not contain face information, the folding screen device 100 can determine that it has entered the rear selfie mode. However, when the front camera and the rear camera can capture face information at the same time, it is necessary to compare the face information captured by the rear camera with the face information captured by the internal screen front camera. For example, Figure 5BAs shown, the user can use the rear camera of the folding screen device to take pictures of other people. The folding screen device 100 can display a preview interface 500 on the external screen (display screen 101), and the preview interface 500 may include a picture 502 captured by the rear camera. The Huamina 502 may contain multiple facial information. Therefore, when the front camera and the rear camera can capture facial information at the same time, if the folding screen device 100 still enters the rear selfie mode when the facial information is captured by the rear camera, then the folding screen device 100 may mistakenly trigger the rear selfie mode, that is, the user does not enter the rear selfie mode while using the rear camera to take a selfie, which will affect the user experience. Therefore, the folding screen device 100 compares the facial information captured by the rear camera with the facial information captured by the rear camera. When the facial information captured by the rear camera is greater than the facial information captured by the front camera, the folding screen device 100 switches to the rear selfie. In this way, the folding screen device 100 can avoid the folding screen device 100 from mistakenly triggering the rear selfie mode.

[0181] In one possible implementation, the folding screen device 100 compares the facial information captured by the rear camera and the facial information captured by the internal screen front camera, which may include: the folding screen device 100 compares the size of the face captured by the rear camera and the size of the face captured by the internal screen front camera.

[0182] In one possible implementation, the folding screen device 100 may determine that the size of the face captured by the rear camera is the size of the face frame of the image captured by the rear camera, and determine that the size of the face captured by the inner screen front camera is the size of the face frame of the image captured by the inner screen front camera. The folding screen device 100 can obtain the size of the face frame of the image captured by the rear camera, and the size of the face frame of the image captured by the inner screen front camera. When the folding screen device 100 determines that the face frame of the image captured by the rear camera is larger than the face frame of the image captured by the inner screen front camera, the folding screen device 100 may turn on the rear selfie and execute the following step S404. When the folding screen device 100 determines that the face frame of the image captured by the rear camera is smaller than the face frame of the image captured by the inner screen front camera, the folding screen device 100 may not enter the rear selfie and execute the following step S405.

[0183] Optionally, in some feasible examples, the rear camera or the inner screen front camera of the folding screen device 100 may capture multiple faces. Then, taking the case where the rear camera captures multiple faces as an example, when comparing the face frame size of the image captured by the rear camera with the face frame size of the image captured by the inner screen front camera, the folding screen device 100 may compare the face frame of the largest face among the multiple faces captured by the rear camera with the face frame of the image captured by the inner screen front camera.

[0184] In some examples, when the image captured by the rear camera does not contain a face, the folding screen device 100 can determine that the size of the face frame in the image captured by the rear camera is 0. When the image captured by the rear camera includes a face, the folding screen device 100 can perform face detection on the image captured by the rear camera and determine the size of the face frame in the image captured by the rear camera. Exemplarily, after the rear camera captures an image, the rear camera can send the captured image to the camera hardware abstraction layer. The camera hardware abstraction layer can determine the size of the face frame in the image captured by the rear camera through face detection, for example, Figure 5A The face frame 501 shown in (a) .

[0185] It can be understood that the face frame in the image containing the face captured by each camera in the folding screen device 100 may be displayed in the preview interface or may not be displayed in the preview interface and is invisible to the user. The embodiment of the present application does not limit this.

[0186] Due to the different resolutions and field of view (FOV) of the cameras in the folding screen device, different cameras will capture different sizes of faces at the same distance. The higher the resolution of the camera, the higher the resolution of the image produced by the camera. For faces captured at the same distance, the larger the face captured by the camera with a higher resolution. For faces captured at the same distance, the larger the face captured by the camera with a larger field of view. Figure 5C As shown, Figure 5C (a) in the figure is an image 503 captured by the camera at a magnification of 0.9x, and the face frame in the image is 5031. Figure 5C (b) in the figure is image 504 captured by the camera at 1.97x magnification, and the face frame in the image is 5041. The shooting distance of image 503 and image 504 is the same, but due to different zoom magnifications, that is, different FOVs of the camera, the size of the face frame is different. Figure 5D As shown, Figure 5D In (a), the resolution of image 503 is 1920*1440. Figure 5D In (b), the resolution of image 505 is 640*480. That is, the resolution of the camera that shoots image 503 is different from the resolution of the camera that shoots image 505. However, the shooting distance and zoom ratio of image 503 and image 505 are the same, but the size of the face frame 5031 in image 503 and the face frame in image 505 are still different.

[0187] In some scenarios, the resolution of the rear camera is higher than that of the internal screen front camera, and the field of view of the rear camera is also larger than that of the internal screen front camera. When a user uses the internal screen front camera to take a selfie, however, there is another person in the scene besides the user, and the rear camera can capture the other person. The distance between the other person and the rear camera is the same as the distance between the user and the internal screen front camera. However, the face captured by the rear camera will be larger than the face captured by the internal screen front camera. In this way, the folding screen device 100 will mistakenly trigger the rear selfie mode.

[0188] In order to reduce or avoid the folding screen device 100 from falsely triggering the rear selfie mode due to different camera resolutions and FOVs, the folding screen device 100 can normalize the FOV, as well as the size of the image captured by each camera and the size of the face frame in the image.

[0189] Generally, the inner screen front camera and the outer screen front camera in the folding screen device 100 only include one camera module. Therefore, the folding screen device 100 can normalize the FOV of the inner screen front camera and the outer screen front camera to a fixed value. For example, the folding screen device 100 can normalize the FOV of the inner screen front camera and the FOV of the outer screen front camera to 86°. However, the rear camera generally has multiple modules, and the zoom ratios of the multiple modules are different. The folding screen device 100 can normalize the FOV of the rear camera to an angle that is the original FOV multiplied by the normalization coefficient FOV_radio. FOV_radio is related to the equivalent focal length of the camera module and the zoom ratio of the user interface.

[0190] The folding screen device 100 can also normalize the faces in the image taken by the camera to an image with a fixed resolution size, and then determine the size of the face frame in the image with a fixed resolution size. Exemplarily, the fixed resolution can be 640*480, and the embodiment of the present application does not limit the specific value of the fixed resolution. For example, the folding screen device 100 can normalize the faces in the image taken by the rear camera to an image with a resolution of 640*480, and then determine the size of the face frame in the image with a resolution of 640*480. Similarly, the folding screen device 100 can normalize the faces in the image taken by the inner screen front camera to the size of the face frame in the image with a resolution of 640*480. Then, the folding screen device 100 compares the sizes of the face frames in the two normalized images.

[0191] Exemplarily, the size of the face frame in the normalized image may be expressed as follows.

[0192] cameraface = UX magnification / module base magnification * reported face frame / long side of original image * 640 (Formula 1)

[0193] In the above formula 1, cameraface represents the size of the face frame in the normalized image. The reported face frame camera hardware abstraction layer detects the size of the face frame in the original image taken by the camera. The size of the reported face frame can be configured by the camera application. The long side of the original image refers to the resolution of the long side of the original image output by the camera. For example, if the size of the original image is 1920*1440, then the long side of the original image is 1920. The UX ratio is the zoom ratio displayed in the preview interface of the camera application of the folding screen device 100, for example, 0.75x, 1.0X, 2.0x, etc. When the camera is a rear wide-angle module, the basic magnification of the module is 0.7, and the resolution of the long side of the corresponding original image output can be 4160. When the camera is a rear main camera module, the basic magnification of the module is 1, and the resolution of the long side of the corresponding original image output can be 4096. When the camera is a rear telephoto module, the basic magnification of the module is 3.2, and the resolution of the long side of the corresponding original image can be 3264.

[0194] In this way, through the above normalization, the calculated face frame size can be consistent for faces of people at the same height, at the same distance, and photographed by different cameras. This can prevent the folding screen device 100 from falsely triggering the rear selfie mode due to different camera resolutions and FOVs.

[0195] Optionally, in a possible implementation, after the camera of the folding screen device 100 captures an image, the folding screen device 100 needs to perform eye gaze detection or face orientation detection on the captured image. When the folding screen device 100 detects eye gaze or face orientation toward the camera in the image captured by the camera, the folding screen device 100 can determine the size of the face frame in the image according to the above formula 1. When the folding screen device 100 does not detect eye gaze in the image captured by the camera, and does not detect face orientation toward the camera, the folding screen device 100 can determine that the size of the face frame in the image is 0. In this way, the rear camera can be prevented from capturing passers-by and accidentally triggering the rear selfie mode.

[0196] In this way, the folding screen device 100 can determine whether the user is closer to the rear camera or the inner screen front camera by comparing the face size captured by the rear camera and the face size captured by the inner screen front camera. When the distance between the user and the rear camera is smaller than the distance between the user and the inner screen front camera, the folding screen device 100 can determine that the user wants to take a rear selfie, and therefore automatically switches to the rear selfie mode. When the distance between the user and the inner screen front camera is smaller than the distance between the user and the rear camera, the folding screen device 100 can determine that the user is taking a selfie with the inner screen front camera. At this time, the folding screen device 100 can turn off the rear camera.

[0197] Optionally, in another possible implementation, the folding screen device 100 determines whether the distance between the user and the rear camera is less than the distance between the user and the inner screen front camera, which may not be limited to comparing the face size of the rear camera and the face size captured by the inner screen front camera. The folding screen device 100 can also measure the distance between the user and the rear camera, and the distance between the user and the inner screen front camera through a distance measuring sensor (for example, a proximity light sensor, an infrared sensor, etc.). Exemplarily, there may be a proximity light sensor at the rear camera of the folding screen device 100, and a proximity light sensor may also be stored at the inner screen front camera of the folding screen device 100. Then, the folding screen device 100 can determine the distance between the user and the rear camera according to the proximity light sensor at the rear camera; and determine the distance between the user and the inner screen front camera according to the proximity light sensor at the inner screen front camera. In this way, the folding screen device 100 can determine that the distance between the rear camera is less than the distance between the user and the inner screen front camera, or that the distance between the rear camera is greater than the distance between the user and the inner screen front camera.

[0198] Furthermore, if the folding screen device 100 determines through a distance-measuring sensor that the distance of the rear camera is less than the distance between the user and the inner-screen front camera, or the distance of the rear camera is greater than the distance between the user and the inner-screen front camera. Then, when the folding screen device 100 detects that it changes from a folded state to an unfolded state, the folding screen device 100 does not need to turn on the rear camera in the background, but only needs to turn on the distance-measuring sensor at the rear camera and the distance-measuring sensor at the inner-screen front camera. When it is determined that the distance of the rear camera is less than the distance between the user and the inner-screen front camera, the folding screen device 100 turns on the rear camera, turns off the inner-screen front camera, and enters the rear selfie mode. When it is determined that the distance of the rear camera is greater than the distance between the user and the inner-screen front camera, the folding screen device 100 uses the inner-screen front camera to take selfies.

[0199] S404, the folding screen device 100 switches the outer screen from the off state to the on state, switches the inner screen from the on state to the off state, turns off the inner screen front camera, and displays a preview interface 1 on the outer screen. The preview interface 1 displays a preview screen 3 captured by the rear camera, and the preview screen 3 includes facial information captured by the rear camera.

[0200] When the folding screen device 100 determines that the facial information captured by the rear camera is greater than the facial information captured by the front camera, the folding screen device 100 can start the rear selfie. That is, the folding screen device 100 switches the outer screen from the off state to the on state, switches the inner screen from the on state to the off state, turns off the inner screen front camera, and displays the preview interface 1 on the outer screen. The preview interface 1 displays the preview screen 3 captured by the rear camera, and the preview screen 3 includes the facial information captured by the rear camera. For example, Figure 5A As shown in (c) in the figure, the outer screen of the folding screen device 100 is in the screen-on state and displays the preview interface 210. The preview interface 210 displays a preview screen of the rear camera selfie, and the preview screen may include the face information of the user captured by the rear camera selfie. The inner screen of the folding screen device 100 is in the screen-off state.

[0201] S405. The folding screen device 100 determines whether the duration during which the facial information captured by the rear camera is shorter than the facial information captured by the internal screen front camera is greater than a preset duration. If so, execute step S406; if not, execute step S403.

[0202] In the case where the folding screen device 100 determines that the facial information captured by the rear camera is smaller than the facial information captured by the inner screen front camera, the folding screen device 100 can keep the rear camera turned on, and then the inner screen is in a bright screen state, and displays a preview image captured by the inner screen front camera, and continuously compares the facial information captured by the rear camera with the facial information captured by the inner screen front camera. Within the preset time, if the folding screen device 100 determines that the facial information captured by the rear camera is always smaller than the facial information captured by the inner screen front camera, the folding screen device 100 does not enter the rear selfie mode, and executes step S406. That is, the folding screen device 100 determines whether the facial information captured by the rear camera is smaller than the facial information captured by the inner screen front camera, and whether the time is greater than the preset time. If so, step S406 is executed, and if not, step S403 is continued.

[0203] The preset duration may be configured by the system of the folding screen device 100, and the preset duration is a positive number greater than 0. For example, the preset duration may be 5 seconds. The specific value of the preset duration is not limited in the embodiment of the present application.

[0204] S406, the folding screen device 100 turns off the rear camera, the inner screen remains in the on-screen state, the outer screen remains in the off-screen state, and a preview interface 2 is displayed on the inner screen, in which a preview screen 2 captured by the inner screen front camera is displayed.

[0205] When the folding screen device 100 determines not to enter the rear selfie mode, the folding screen device 100 can keep the inner screen front selfie. That is, the folding screen device 100 turns off the rear camera and keeps the inner screen front camera turned on, the inner screen remains in the screen-on state, the outer screen remains in the screen-off state, and the preview interface 2 is displayed on the inner screen, and the preview interface 2 displays the preview picture 2 captured by the inner screen front camera. The preview interface 2 can be Figure 3A The preview interface 300 shown in (a) of FIG. 300 is shown in FIG. Figure 3A The description of (a) in FIG. 2 is not repeated here.

[0206] Through the shooting method provided in the embodiment of the present application, the folding screen device 100 can automatically switch to the rear selfie mode when switching from state 1 to the second state. Figure 5A The state shown in (a) is switched to Figure 5A The rear selfie state shown in (c) in FIG. 1 is shown. The user does not need to click the control for entering the rear selfie mode in the preview interface of the camera application. In this way, the operation of entering the rear selfie mode can be simplified, thereby improving the user experience.

[0207] Figure 6 , Figure 7 The specific process of the folding screen device 100 entering the rear selfie mode when the folding screen device 100 switches from state 2 to the second state is described.

[0208] Figure 6 A shooting method provided by an embodiment of the present application is exemplarily shown. Figure 6 As shown, when the folding screen device 100 switches from the above state 2 to the second state, a shooting method provided by an embodiment of the present application may include the following steps:

[0209] S601, the folding screen device 100 is in a folded state, the inner screen is in an off state, the outer screen is in an on state, the rear camera is turned on, and a preview interface 1 is displayed on the outer screen. The preview interface 1 displays a preview screen 4 captured by the rear camera.

[0210] The folding screen device 100 is in a folded state. In the folded state, the outer screen of the folding screen device 100 is powered on and the inner screen is powered off. Therefore, in the folded state, the outer screen of the folding screen device 100 is in a bright screen state and the inner screen is in a dark screen state.

[0211] When the foldable screen device 100 is in the folded state, the user can choose to use the rear camera to take pictures. In response to the user opening the camera application, or in response to the user clicking the camera conversion control 203, the foldable screen device 100 can open the rear camera to take pictures, and display the preview interface 1 on the external screen, in which the preview interface 1 displays the preview screen 4 captured by the rear camera. For example, the preview interface 1 can be Figure 7 The preview interface 200 shown in (a) of FIG. 1 shows a preview screen 208 captured by the rear camera. When the folding screen device 100 is in the folded state, the preview interface 200 is displayed on the external screen. For details, please refer to the above description of Figure 2B The introduction of (a) in FIG. 1 is not repeated here.

[0212] That is, currently, the folding screen device 100 is in the above-mentioned state 2.

[0213] S602. Based on the user's unfolding operation, the folding screen device 100 switches from a folded state to an unfolded state, the inner screen switches from an off state to a bright state, the outer screen switches from a bright state to an off state, the inner screen front camera is turned on, and the rear camera is kept turned on, and a preview interface 2 is displayed on the inner screen, in which a preview screen 4 captured by the rear camera is displayed.

[0214] The foldable screen device 100 can switch from a folded state to an unfolded state based on the user's unfolding operation. During the unfolding process, the foldable screen device 100 can detect changes in posture. When the foldable screen device 100 detects that the posture of the foldable screen device 100 changes from a folded state to an unfolded state, the foldable screen device 100 can power on the inner screen and power off the outer screen. That is, the inner screen of the foldable screen device 100 switches from an off-screen state to a bright-screen state, and the outer screen switches from a bright-screen state to an off-screen state. For example, Figure 7 As shown in (b), the folding screen device 100 detects that the state changes from the folded state to the unfolded state, and the inner screen of the folding screen device 100 switches from the off state to the bright screen state, and the outer screen switches from the bright screen state to the off state.

[0215] Regarding how the folding screen device 100 detects that the folding screen device 100 changes from a folded state to an unfolded state, please refer to the description in the above step S402 for details, which will not be repeated here.

[0216] When the folding screen device 100 is unfolded from the folding screen to the unfolded state, the folding screen device 100 can also turn on the inner screen front camera and keep the rear camera turned on. The folding screen device 100 can display a preview interface 2 on the inner screen, and the preview interface 2 displays a preview image 4 captured by the rear camera. For example, the preview interface 2 can be Figure 3BThe preview interface 310 shown in FIG. 4 may be the preview screen 208 shown in the preview interface 310. Figure 3B The description of (a) will not be repeated here.

[0217] S603, the folding screen device 100 determines whether the facial information captured by the rear camera is greater than the facial information captured by the internal screen front camera. If so, execute step S604; if not, execute step S605.

[0218] The rear camera and the inner screen front camera of the folding screen device 100 are both turned on and can take pictures. When the user points the inner screen toward the user's face, the inner screen front camera can capture the user's facial information. When the user points the rear camera toward the face, the rear camera can capture the user's facial information. Since the folding screen device 100 cannot directly determine whether the rear camera is facing the user's face or the front camera is facing the face based on the change in the posture of the folding screen device 100, the folding screen device 100 needs to compare the facial information captured by the rear camera with the facial information captured by the inner screen front camera. When the folding screen device 100 determines that the facial information captured by the rear camera is greater than the facial information captured by the inner screen front camera, the folding screen device 100 can turn on the rear selfie, that is, execute the following step S604. When the folding screen device 100 determines that the facial information captured by the rear camera is less than the facial information captured by the inner screen front camera, the folding screen device 100 may not enter the rear selfie, and execute the following step S605.

[0219] The description of step S603 may refer to that of step S403 and will not be repeated here.

[0220] S604, the folding screen device 100 switches the outer screen from the off state to the on state, switches the inner screen from the on state to the off state, turns off the inner screen front camera, and displays preview interface 1 on the outer screen. Preview interface 1 displays preview screen 3 captured by the rear camera, and preview screen 3 includes facial information captured by the rear camera.

[0221] When the folding screen device 100 determines that the facial information captured by the rear camera is greater than the facial information captured by the front camera, the folding screen device 100 can start the rear selfie. That is, the folding screen device 100 switches the outer screen from the off state to the on state, switches the inner screen from the on state to the off state, turns off the inner screen front camera, and displays the preview interface 1 on the outer screen. The preview interface 1 displays the preview screen 3 captured by the rear camera, and the preview screen 3 includes the facial information captured by the rear camera. For example, Figure 7As shown in (c) in the figure, the outer screen of the folding screen device 100 is in the screen-on state and displays the preview interface 210. The preview interface 210 displays a preview screen of the rear camera selfie, and the preview screen may include the face information of the user captured by the rear camera selfie. The inner screen of the folding screen device 100 is in the screen-off state.

[0222] S605. The folding screen device 100 determines whether the duration during which the facial information captured by the rear camera is shorter than the facial information captured by the internal screen front camera is greater than a preset duration. If so, execute step S606; if not, execute step S603.

[0223] When the folding screen device 100 determines that the facial information captured by the rear camera is smaller than the facial information captured by the inner screen front camera, the folding screen device 100 can keep the inner screen front camera and the rear camera turned on. Then, the inner screen of the folding screen device 100 is in a bright screen state, and displays a preview screen captured by the rear camera, and continuously compares the facial information captured by the rear camera with the facial information captured by the inner screen front camera. Within the preset time, when the folding screen device 100 determines that the facial information captured by the rear camera is always smaller than the facial information captured by the inner screen front camera, the folding screen device 100 does not enter the rear selfie mode, and executes step S606. That is, the folding screen device 100 determines whether the facial information captured by the rear camera is smaller than the facial information captured by the inner screen front camera, and whether the duration is greater than the preset duration. If so, step S606 is executed, and if not, step S603 is continued.

[0224] The description of step S605 may refer to that of step S405 and will not be repeated here.

[0225] S606, the folding screen device 100 turns off the inner screen front camera, the inner screen is in the screen-on state, the outer screen is in the screen-off state, and a preview interface 2 is displayed on the inner screen, and the preview interface 2 displays a preview picture 4 captured by the rear camera.

[0226] When the folding screen device 100 determines not to enter the rear selfie mode, the folding screen device 100 can keep shooting with the rear camera. That is, the folding screen device 100 turns off the inner screen front camera and keeps the rear camera on, the inner screen remains in the light state, the outer screen remains in the off state, and displays the preview interface 2 on the inner screen, which displays the preview picture 4 captured by the rear camera. The preview interface 2 can be Figure 3B The preview interface 310 shown in FIG. 4 may be the preview screen 208 shown in the preview interface 310. Figure 3B The description of (a) will not be repeated here.

[0227] That is, the preview interface 2 displayed on the inner screen in step S606 is the same as the preview interface 2 displayed on the inner screen in step S602.

[0228] Through the shooting method provided in the embodiment of the present application, the folding screen device 100 can automatically switch to the rear selfie mode when switching from state 2 to the second state. Figure 7 The state shown in (a) is switched to Figure 7 The rear selfie state shown in (c) in FIG. 1 is shown. The user does not need to click the control for entering the rear selfie mode in the preview interface of the camera application. In this way, the operation of entering the rear selfie mode can be simplified, thereby improving the user experience.

[0229] Figure 8 , Fig. 9 The specific process of the folding screen device 100 entering the rear selfie mode when the folding screen device 100 switches from state 3 to the second state is described.

[0230] Figure 8 A shooting method provided by an embodiment of the present application is exemplarily shown. Figure 8 As shown, when the folding screen device 100 switches from the above state 3 to the second state, a shooting method provided by an embodiment of the present application may include the following steps:

[0231] S801, the folding screen device 100 is in the unfolded state, the inner screen is in the bright screen state, the outer screen is in the off screen state, the inner screen front camera is turned on, and a preview interface 2 is displayed on the inner screen, and the preview interface 2 displays a preview image captured by the inner screen front camera.

[0232] The folding screen device 100 can be in an unfolded state. In the unfolded state, the folding screen device 100 powers on the inner screen and powers off the outer screen. Therefore, in the folded state, the inner screen of the folding screen device 100 is in a bright screen state, and the outer screen is in a dark screen state.

[0233] In the unfolded state, the user can click on the camera application icon in the folding screen device 100 and select the internal screen front camera to take a selfie. In response to the user operation, the folding screen device 100 can turn on the internal screen front camera and display a preview interface 2 of the camera application on the internal screen. The preview interface 2 can display a preview screen 2 captured by the internal screen front camera.

[0234] For example, the folding screen device 100 in the unfolded state can be as follows: Fig. 9 As shown in (a) in FIG. 1 , the preview interface 2 may be Fig. 9 The preview interface 300 shown in (a) of FIG. The preview screen 2 may be Fig. 9The preview screen 301 shown in (a) of FIG. 300 is shown in FIG. 301. For details about the preview interface 300 and the preview screen 301, please refer to the above description of Figure 3A The description of (a) in FIG. 2 is not repeated here.

[0235] That is, currently, the folding screen device 100 is in the above-mentioned state 3.

[0236] S802. The folding screen device 100 turns on the rear camera based on the user's flipping operation; the inner screen is in a bright screen state, the outer screen is in an off screen state, the inner screen front camera remains turned on, and the inner screen displays a preview interface 2, which displays a preview picture 2 captured by the inner screen front camera.

[0237] The user can flip the folding screen device 100, for example, Fig. 9 As shown, the user can move the folding screen device 100 from Fig. 9 The posture shown in (a) is flipped to Fig. 9 The posture shown in (b).

[0238] That is, the user can flip the folding screen device 100 from the inner screen facing the user to the outer screen and the rear camera facing the user. The folding screen device 100 can detect the user's flipping operation, and based on the flipping operation, turn on the rear camera. At this time, the rear camera is only turned on in the background, and the folding screen device 100 does not display the preview screen taken by the rear camera. The inner screen of the folding screen device 100 is in the screen-on state, the outer screen is in the screen-off state, the inner screen front camera remains on, and the inner screen displays a preview interface 2, and the preview interface 2 displays a preview screen 2 taken by the inner screen front camera. For the preview interface 2 and the preview screen 2, please refer to the description in the above step S801, which will not be repeated here.

[0239] In a possible implementation, the folding screen device 100 can detect that the folding screen device 100 is flipped based on a Hall sensor and / or an acceleration sensor. Alternatively, the folding screen device 100 can detect that the folding screen device 100 is flipped based on a gyroscope sensor and / or an acceleration sensor. For how the folding screen device 100 specifically detects flipping, please refer to the relevant description in the prior art, which will not be repeated here.

[0240] S803. The folding screen device 100 determines whether the facial information captured by the rear camera is greater than the facial information captured by the internal screen front camera. If so, execute step S804; if not, execute step S805.

[0241] When the folding screen device 100 determines that the facial information captured by the rear camera is greater than the facial information captured by the inner screen front camera, the folding screen device 100 may start the rear Selfie, that is, execute the following step S804. When the folding screen device 100 determines that the facial information captured by the rear camera is less than the facial information captured by the inner screen front camera, the folding screen device 100 may not enter the rear Selfie, and execute the following step S805.

[0242] The description of step S803 may refer to step S403 and will not be repeated here.

[0243] S804, the folding screen device 100 switches the outer screen from the off state to the on state, switches the inner screen from the on state to the off state, turns off the inner screen front camera, and displays preview interface 1 on the outer screen. Preview interface 1 displays preview screen 3 captured by the rear camera, and preview screen 3 includes facial information captured by the rear camera.

[0244] When the folding screen device 100 determines that the facial information captured by the rear camera is greater than the facial information captured by the front camera, the folding screen device 100 can start the rear selfie. That is, the folding screen device 100 switches the outer screen from the off state to the on state, switches the inner screen from the on state to the off state, turns off the inner screen front camera, and displays the preview interface 1 on the outer screen. The preview interface 1 displays the preview screen 3 captured by the rear camera, and the preview screen 3 includes the facial information captured by the rear camera. For example, Fig. 9 As shown in (b) in the figure, the outer screen of the folding screen device 100 is in the screen-on state and displays the preview interface 210. The preview interface 210 displays a preview screen of the rear camera selfie, and the preview screen may include the face information of the user captured by the rear camera selfie. The inner screen of the folding screen device 100 is in the screen-off state.

[0245] S805. The folding screen device 100 determines whether the duration during which the facial information captured by the rear camera is shorter than the facial information captured by the internal screen front camera is greater than a preset duration. If so, execute step S806; if not, execute step S803.

[0246] In the case where the folding screen device 100 determines that the facial information captured by the rear camera is smaller than the facial information captured by the inner screen front camera, the folding screen device 100 can keep the rear camera turned on, and then the inner screen is in a bright screen state, and displays a preview image captured by the inner screen front camera, and continuously compares the facial information captured by the rear camera with the facial information captured by the inner screen front camera. Within the preset time, if the folding screen device 100 determines that the facial information captured by the rear camera is always smaller than the facial information captured by the inner screen front camera, the folding screen device 100 does not enter the rear selfie mode, and executes step S806. That is, the folding screen device 100 determines whether the facial information captured by the rear camera is smaller than the facial information captured by the inner screen front camera, and whether the time is greater than the preset time. If so, step S806 is executed, and if not, step S803 is continued.

[0247] The description of step S805 may refer to step S405 and will not be repeated here.

[0248] S806. The folding screen device 100 turns off the rear camera, the inner screen is in a light state, the outer screen is in a dark state, and a preview interface 2 is displayed on the inner screen. The preview interface 2 displays a preview picture 2 captured by the inner screen front camera.

[0249] When the folding screen device 100 determines not to enter the rear selfie mode, the folding screen device 100 can turn off the rear camera and maintain the initial state, which is the state of the folding screen device 100 in step S801. That is, the inner screen of the folding screen device 100 is in the screen-on state, the outer screen is in the screen-off state, and the preview screen 2 is displayed on the inner screen, and the preview interface 2 displays the preview screen 2 captured by the inner screen front camera. For details, please refer to the description in the above step S801, which will not be repeated here.

[0250] Through the shooting method provided in the embodiment of the present application, the folding screen device 100 can automatically switch to the rear selfie mode when switching from state 3 to the second state. Fig. 9 The state shown in (a) is switched to Fig. 9 The rear selfie state shown in (b) of FIG. 1 is shown. The user does not need to click the control for entering the rear selfie mode in the preview interface of the camera application. In this way, the operation of entering the rear selfie mode can be simplified, thereby improving the user experience.

[0251] Fig.10 , Fig.11 The specific process of the folding screen device 100 entering the rear selfie mode when the folding screen device 100 switches from state 4 to the second state is described.

[0252] Fig.10A shooting method provided by an embodiment of the present application is exemplarily shown. Fig.10 As shown, when the folding screen device 100 switches from the above state 4 to the second state, a shooting method provided by an embodiment of the present application may include the following steps:

[0253] S1001, the folding screen device 100 is in the unfolded state, the inner screen is in the bright screen state, the outer screen is in the off screen state, the rear camera is turned on, and a preview interface 2 is displayed on the inner screen. The preview interface 2 displays a preview picture 4 captured by the rear camera.

[0254] The folding screen device 100 can be in an unfolded state. In the unfolded state, the folding screen device 100 powers on the inner screen and powers off the outer screen. Therefore, in the folded state, the inner screen of the folding screen device 100 is in a bright screen state, and the outer screen is in a dark screen state.

[0255] In the unfolded state, the user can click on the camera application icon in the folding screen device 100 and select the rear camera to shoot. In response to the user operation, the folding screen device 100 can turn on the rear camera and display a preview interface 2 of the camera application on the inner screen. The preview interface 2 can display a preview screen 4 captured by the rear camera.

[0256] For example, the folding screen device 100 in the unfolded state can be as follows: Fig.11 As shown in (a) in FIG. 1 , the preview interface 2 may be Fig.11 The preview interface 310 shown in (a) of FIG. The preview screen 4 may be Fig.11 The preview screen 208 shown in (a) of FIG. 30 is shown in FIG. 310 and the preview screen 208. For details about the preview interface 310 and the preview screen 208, please refer to the above description of Figure 3B The description of (a) in FIG. 2 is not repeated here.

[0257] That is, currently, the folding screen device 100 is in the above-mentioned state 4.

[0258] S1002. The folding screen device 100 turns on the front camera of the inner screen based on the user's flipping operation; the inner screen is in a bright screen state, the outer screen is in an off screen state, the rear camera remains turned on, and the inner screen displays a preview screen 2, which displays a preview screen 4 captured by the rear camera.

[0259] The user can flip the folding screen device 100, for example, Fig.11 As shown, the user can move the folding screen device 100 from Fig.11 The posture shown in (a) is flipped to Fig.11 The posture shown in (b).

[0260] That is, the user can flip the folding screen device 100 from the inner screen facing the user to the outer screen and the rear camera facing the user. The folding screen device 100 can detect the user's flipping operation, and based on the flipping operation, turn on the inner screen front camera. At this time, the inner screen front camera is only turned on in the background, and the folding screen device 100 does not display the preview screen taken by the inner screen front camera. The inner screen of the folding screen device 100 is in the screen-on state, the outer screen is in the screen-off state, the rear camera remains on, and the inner screen displays a preview interface 2, and the preview interface 2 displays a preview screen 4 taken by the rear camera. For the preview interface 2 and the preview screen 4, please refer to the description in the above step S1001, which will not be repeated here.

[0261] Regarding how the folding screen device 1000 detects that the folding screen device 100 has been flipped, please refer to the description in step S802 for details, which will not be repeated here.

[0262] S1003. The folding screen device 100 determines whether the facial information captured by the rear camera is greater than the facial information captured by the internal screen front camera. If so, execute step S1004; if not, execute step S1005.

[0263] When the folding screen device 100 determines that the facial information captured by the rear camera is greater than the facial information captured by the internal screen front camera, the folding screen device 100 can start the rear Selfie, that is, execute the following step S1004. When the folding screen device 100 determines that the facial information captured by the rear camera is less than the facial information captured by the internal screen front camera, the folding screen device 100 may not enter the rear Selfie, and execute the following step S1005.

[0264] The description of step S1003 may refer to that of step S403 and will not be repeated here.

[0265] S1004. The folding screen device 100 switches the outer screen from an off state to a bright state, switches the inner screen from a bright state to an off state, turns off the inner screen front camera, and displays a preview interface 3 on the outer screen. The preview interface 3 displays a preview screen 3 captured by the rear camera. The preview screen 3 includes facial information captured by the rear camera.

[0266] When the folding screen device 100 determines that the facial information captured by the rear camera is greater than the facial information captured by the front camera, the folding screen device 100 can start the rear selfie. That is, the folding screen device 100 switches the outer screen from the off state to the on state, switches the inner screen from the on state to the off state, turns off the inner screen front camera, and displays the preview interface 3 on the outer screen. The preview interface 3 displays the preview screen 3 captured by the rear camera, and the preview screen 3 includes the facial information captured by the rear camera. For example, Fig.11 As shown in (b) in the figure, the outer screen of the folding screen device 100 is in the screen-on state and displays the preview interface 210. The preview interface 210 displays a preview screen of the rear camera selfie, and the preview screen may include the face information of the user captured by the rear camera selfie. The inner screen of the folding screen device 100 is in the screen-off state.

[0267] S1005. The folding screen device 100 determines whether the duration during which the facial information captured by the rear camera is shorter than the facial information captured by the internal screen front camera is greater than a preset duration. If so, execute step S1006; if not, execute step S1003.

[0268] When the folding screen device 100 determines that the facial information captured by the rear camera is smaller than the facial information captured by the inner screen front camera, the folding screen device 100 can keep the inner screen front camera and the rear camera turned on. Then, the inner screen of the folding screen device 100 is in a bright screen state, and displays a preview screen captured by the rear camera, and continuously compares the facial information captured by the rear camera with the facial information captured by the inner screen front camera. Within the preset time, if the folding screen device 100 determines that the facial information captured by the rear camera is always smaller than the facial information captured by the inner screen front camera, the folding screen device 100 does not enter the rear selfie mode, and executes step S1006. That is, the folding screen device 100 determines whether the facial information captured by the rear camera is smaller than the facial information captured by the inner screen front camera, and whether the duration is greater than the preset duration. If so, step S1006 is executed, and if not, step S1003 is continued.

[0269] The description of step S1005 may refer to that of step S405 and will not be repeated here.

[0270] S1006. The folding screen device 100 turns off the inner screen front camera, the inner screen is in a light state, the outer screen is in an off state, and a preview interface 2 is displayed on the inner screen. The preview interface 2 displays a preview picture 4 captured by the rear camera.

[0271] When the folding screen device 100 determines not to enter the rear selfie mode, the folding screen device 100 can keep shooting with the rear camera. That is, the folding screen device 100 turns off the inner screen front camera and keeps the rear camera on, the inner screen remains in the light state, the outer screen remains in the off state, and displays the preview interface 2 on the inner screen, which displays the preview picture 4 captured by the rear camera. The preview interface 2 can be Figure 3B The preview interface 310 shown in FIG. 4 may be the preview screen 208 shown in the preview interface 310. Figure 3B The description of (a) will not be repeated here.

[0272] That is, the preview interface 2 displayed on the inner screen in step S1006 is the same as the preview interface 2 displayed on the inner screen in step S1001.

[0273] Through the shooting method provided in the embodiment of the present application, the folding screen device 100 can automatically switch to the rear selfie mode when switching from state 4 to the second state. Fig.11 The state shown in (a) is switched to Fig.11 The rear selfie state shown in (b) of FIG. 1 is shown. The user does not need to click the control for entering the rear selfie mode in the preview interface of the camera application. In this way, the operation of entering the rear selfie mode can be simplified, thereby improving the user experience.

[0274] Through the shooting method provided in the embodiment of the present application, the folding screen device 100 can shoot with the rear camera in the folded state, take selfies with the front camera of the external screen in the folded state, shoot with the rear camera in the unfolded state, or shoot with the front camera of the internal screen in the unfolded state. When the user unfolds the folding screen device 100 with a folded screen, or flips the folding screen device 100 in the unfolded state, the folding screen device 100 can turn on the front camera of the internal screen and the rear camera, and compare the facial information captured by the front camera of the internal screen with the facial information captured by the rear camera. When the folding screen device 100 determines that the facial information captured by the rear camera is greater than the facial information captured by the front camera, the folding screen device 100 can turn on the rear selfie. In this way, no matter what state the folding screen device 100 is in, it can automatically enter the rear selfie mode, simplifying user operations, thereby improving the user experience.

[0275] After the folding screen device 100 enters the rear selfie mode, it can also exit the rear selfie mode. In this way, different shooting needs of users can be met.

[0276] In a possible implementation, when the folding screen device 100 enters the rear selfie mode, the user can click a control for exiting the rear selfie mode or change the folding screen device 100 from the unfolded state to the folded state. In response to the user operation, the folding screen device 100 can exit the rear selfie mode. Figure 2A As shown in (b) of FIG. 1 , the foldable screen device 100 is in the rear selfie mode, and the rear selfie preview interface 210 is displayed on the external screen. The user can change the foldable screen device 100 from the folded state to the unfolded state. In response to the user operation, the foldable screen device 100 can exit the rear selfie mode and display the preview screen shot by the rear camera on the external screen. That is, the foldable screen device 100 returns to the unfolded state. Figure 2BFor the state shown in (a) of FIG. 2B, please refer to the description of (a) of FIG. 2B above, which will not be repeated here. Figure 2A As shown in (b) in the figure, the foldable screen device 100 is in the rear selfie mode, and the rear selfie preview interface 210 is displayed on the external screen. The user can click the rear selfie switch control 205 in the preview interface 210. In response to the user operation, the foldable screen device 100 can exit the rear selfie mode, switch the external screen from the on screen state to the off screen state, switch the internal screen from the off screen state to the on screen state, and display the preview picture taken by the rear camera on the internal screen. That is, the foldable screen device 100 is in Figure 3B The state shown in (a) in Figure 3B The description of (a) in FIG. 2 is not repeated here.

[0277] In another possible implementation, when the folding screen device 100 is in the rear selfie mode, the inner screen front camera can be turned on after detecting the user's flipping operation. When the folding screen device 100 determines that the face information captured by the inner screen front camera is greater than the face information captured by the rear camera, the folding screen device 100 can exit the rear selfie mode and enter the inner screen front selfie mode. Fig.12 , Fig.13 The process of the folding screen device 100 exiting the rear-facing selfie mode and entering the inner-screen front-facing selfie mode is specifically introduced.

[0278] Fig.12 A shooting method provided by an embodiment of the present application is exemplarily shown. Fig.12 As shown, the folding screen device 100 enters the inner screen front selfie mode from the rear selfie mode, which may include the following steps:

[0279] S1201, the folding screen device 100 is in the unfolded state, the outer screen is in the bright screen state, the inner screen is in the off screen state, the rear camera is turned on, and a preview interface 1 is displayed on the outer screen. The preview interface 1 displays a preview screen 3 captured by the rear camera, and the preview screen 3 includes facial information captured by the rear camera.

[0280] The folding screen device 100 is in the rear selfie mode. That is, the folding screen device 100 is in the unfolded state, the outer screen is in the light state, the inner screen is in the dark state, the rear camera is turned on, and the preview interface 1 is displayed on the outer screen. The preview interface 1 displays the preview screen 3 captured by the rear camera, and the preview screen 3 includes the face information captured by the rear camera. Exemplarily, the folding screen device 100 in the rear selfie mode can be as follows: Fig.13 The preview interface 1 can be Fig.13 The preview interface 210 shown in (a) of FIG. 1 may be a preview screen 3. Fig.13 The preview screen 207 shown in (a) in FIG.

[0281] S1202. Based on the user's flipping operation, the folding screen device 100 turns on the front camera of the inner screen, the outer screen is in a bright state, the inner screen is in a dark state, the rear camera is kept turned on, and the outer screen displays a preview interface 1, which displays a preview screen 3 captured by the rear camera.

[0282] The user can flip the folding screen device 100, for example, Fig.13 As shown, the user can move the folding screen device 100 from Fig.13 The posture shown in (a) is flipped to Fig.13 The posture shown in (b).

[0283] That is, the user can flip the folding screen device 100 from the outer screen and the rear camera facing the user to the inner screen facing the user. The folding screen device 100 can detect the user's flipping operation, and based on the flipping operation, turn on the inner screen front camera. At this time, the inner screen front camera is only turned on in the background, and the folding screen device 100 does not display the preview screen taken by the inner screen front camera. The folding screen device 100 still maintains the rear selfie mode, that is, the outer screen of the folding screen device 100 is in the screen-on state, the inner screen is in the screen-off state, the rear camera is kept on, and the outer screen displays a preview interface 1, and the preview interface 1 displays a preview screen 3 taken by the rear camera.

[0284] S1203. The folding screen device 100 determines whether the facial information captured by the front camera of the inner screen is greater than the facial information captured by the rear camera; if so, execute step S1204; if not, execute step S1205.

[0285] When the folding screen device 100 determines that the facial information captured by the inner screen front camera is greater than the facial information captured by the rear camera, the folding screen device 100 can switch from the rear selfie to the inner screen front selfie, that is, execute the following step S1204. When the folding screen device 100 determines that the facial information captured by the inner screen front camera is less than the facial information captured by the rear camera, the folding screen device 100 can continue to maintain the rear selfie and execute the following step S1205.

[0286] The description of step S1203 may refer to that of step S403 and will not be repeated here.

[0287] S1204, the folding screen device 100 switches the inner screen from the off state to the on state, switches the outer screen from the on state to the off state, turns off the rear camera, and displays preview interface 2 on the inner screen. Preview interface 2 displays a preview screen captured by the inner screen front camera. Preview screen 2 includes facial information captured by the inner screen front camera.

[0288] When the folding screen device 100 determines that the facial information captured by the internal screen front camera is greater than the facial information captured by the rear camera, the folding screen device 100 can switch from the rear-camera selfie to the internal screen front selfie. That is, the folding screen device 100 switches the internal screen from the off screen state to the on screen state, and switches the external screen from the on screen state to the off screen state, turns off the rear camera, and displays preview interface 2 on the internal screen. Preview interface 2 displays a preview screen captured by the internal screen front camera, and preview screen 2 includes facial information captured by the internal screen front camera. The external screen of the folding screen device 100 is in the on screen state, the internal screen is in the off screen state, the rear camera is kept on, and the external screen displays preview interface 2, which displays preview screen 3 captured by the rear camera. Fig.13 As shown, the folding screen device 100 is Fig.13 After the rear Selfie state shown in (a) is flipped, it switches to Fig.13 The internal screen front selfie mode shown in (b) of FIG. The preview interface 2 can be Fig.13 In the preview interface 300 shown in (b), the preview screen 2 may be Fig.13 For details about the preview interface 300 and the preview screen 301, please refer to the above description of Figure 3A The description of (a) will not be repeated here.

[0289] S1205. The folding screen device 100 determines whether the duration during which the facial information captured by the front camera of the inner screen is shorter than the facial information captured by the rear camera is greater than a preset duration; if so, execute step S1206; if not, execute step S1203.

[0290] When the folding screen device 100 determines that the facial information captured by the rear camera is smaller than the facial information captured by the internal screen front camera, the folding screen device 100 can continue to keep the internal screen front camera and the rear camera turned on. And, the folding screen device 100 still maintains the rear selfie mode. However, the folding screen device 100 will continue to compare the size of the facial information captured by the internal screen front camera with the facial information captured by the rear camera within a preset time length. When the folding screen device 100 determines that the facial information captured by the internal screen front camera is smaller than the facial information captured by the rear camera for a period greater than the preset time length, the folding screen device 100 can execute step S1206, otherwise, execute step S1203.

[0291] S1206. The folding screen device 100 turns off the inner screen front camera, the outer screen is in the on state, the inner screen is in the off state, and a preview interface 1 is displayed on the outer screen. The preview interface 1 displays a preview picture 3 captured by the rear camera.

[0292] If the folding screen device 100 determines not to exit the rear selfie mode, the folding screen device 100 can turn off the internal screen front camera and continue to maintain the rear selfie mode. That is, the external screen of the folding screen device 100 is in the screen-on state, the internal screen is in the screen-off state, and a preview interface 1 is displayed on the external screen, and the preview interface 1 displays the preview picture 3 captured by the rear camera.

[0293] Through the shooting method provided by the embodiment of the present application, when the folding screen device 100 is in the rear selfie mode, the folding screen device 100 can detect that the user has flipped the folding screen device 100. Then, the folding screen device 100 can determine whether to automatically exit the rear selfie mode and switch to the front selfie mode based on the comparison result of the size of the face information of the rear camera and the face information of the internal screen front camera. In this way, user operations can be reduced, thereby improving user operations.

[0294] Optionally, in another possible implementation, the folding screen device provided in the embodiment of the present application may be an outward-folding folding screen device. The folding screen device may include a first display screen, a first front camera, and a rear camera. The first display screen may be folded into at least two display areas, a first display area and a second display area. The two first front cameras may be located on the same side as the first display screen. The rear camera may be located on the back of the first display screen. Exemplarily, the product form of the outward-folding folding screen device may be as follows: Fig.14 shown.

[0295] Fig.14 The product form diagram of an outward-folding folding screen device 100 is shown by way of example.

[0296] Fig.14 (a) and (b) show a folding screen device 100 in an unfolded state. The folding screen device 100 may include a display screen 115, which may be divided into two display areas by the folding screen, for example, a display area 1151 and a display area 1152. The folding screen device 100 may also include a camera 116, which may be located on the same side as the display area 1152.

[0297] The display area 1151 of the folding screen device 100 can be folded outward along a folding direction, so that the folding screen device 100 changes from an unfolded state to a folded state.

[0298] Fig.14 (c) and (d) show the folding screen device 100 in the unfolded state. When the folding screen device 100 is in the folded state, the display area 1151 is located on the back of the display area 1152. The folding screen device 100 may also include a camera 117. When the folding screen device 100 is in the folded state, the camera 117 may be located on the back of the display area 1152 and on the same side as the display area 1151.

[0299] When the folding screen device 100 is in the unfolded state, the camera 117 can be located on the back of the display screen 115.

[0300] by Fig.14 Taking the outward-folding folding screen device 100 shown as an example, the automatic switching of the outward-folding folding screen device 100 from different states to the rear selfie mode will be described in detail below.

[0301] Fig.15 It is exemplarily shown that when the folding screen device 100 switches from the unfolded state to the folded state, it automatically switches to the rear selfie mode.

[0302] like Fig.15 As shown in (a) of FIG. 1 , the folding screen device 100 is in an unfolded state, and the folding screen device 100 uses the front camera (camera 116) to take a selfie. A preview interface 1500 is displayed on the display screen 115 of the folding screen device 100, and the preview interface 1500 includes a picture 1501 captured by the front camera.

[0303] When the folding screen device 100 switches from the unfolded state to the folded state, if the folding screen device 100 detects that the size of the face captured by the rear camera (camera 117) is larger than the size of the face captured by the front camera, the folding screen device 100 turns on the rear selfie mode. Fig.15 As shown in (b) in the figure, the folding screen device 100 is in a folded state. The folding screen device 100 automatically switches from the front camera to the rear selfie mode. A preview interface 1510 is displayed in the display area 1151 of the folding screen device 100, and the preview interface 1510 includes a picture 1511 taken by the rear camera.

[0304] Fig.16 It is exemplarily shown that the folding screen device 100 is in a folded state. When taking a selfie using the front camera, the folding screen device 100 automatically switches to the rear selfie mode after being flipped.

[0305] like Fig.16As shown in (a), the folding screen device 100 is in a folded state, and the folding screen device 100 uses the front camera (camera 116) to take a selfie. A preview interface 1600 is displayed in the display area 1152 of the folding screen device 100, and the preview interface 1600 includes a picture 1601 captured by the front camera.

[0306] When it is detected that the user flips the folding screen device 100, if the folding screen device 100 detects that the size of the face captured by the rear camera (camera 117) is larger than the size of the face captured by the front camera, the folding screen device 100 turns on the rear selfie mode. Fig.16 As shown in (b) in the figure, the folding screen device 100 is in a folded state. The folding screen device 100 automatically switches from the front camera to the rear selfie mode. A preview interface 1510 is displayed in the display area 1151 of the folding screen device 100, and the preview interface 1510 includes a picture 1511 taken by the rear camera.

[0307] Fig.17 The folding screen device 100 is exemplarily shown to be in a folded state. When taking pictures using the rear camera, the folding screen device 100 automatically switches to the rear selfie mode after being flipped.

[0308] like Fig.17 As shown in (a) of FIG. 1 , the folding screen device 100 is in a folded state, and the folding screen device 100 uses a rear camera (camera 117) to shoot. A preview interface 1700 is displayed in the display area 1152 of the folding screen device 100, and the preview interface 1700 includes a picture 1701 captured by the rear camera.

[0309] When it is detected that the user flips the folding screen device 100, if the folding screen device 100 detects that the size of the face captured by the rear camera (camera 117) is larger than the size of the face captured by the front camera, the folding screen device 100 turns on the rear selfie mode. Fig.17 As shown in (b) in the figure, the folding screen device 100 is in a folded state. The folding screen device 100 automatically switches from the front camera to the rear selfie mode. A preview interface 1510 is displayed in the display area 1151 of the folding screen device 100, and the preview interface 1510 includes a picture 1511 taken by the rear camera.

[0310] When the foldable screen device 100 enters the rear-camera selfie mode, if the foldable screen device 100 switches from the folded state to the unfolded state, the foldable screen device 100 can exit the rear-camera selfie mode and switch to the front-camera selfie mode. Alternatively, when the foldable screen device 100 enters the rear-camera selfie mode, if it is detected that the user flips the foldable screen device 100 and the size of the face captured by the front camera is larger than the size of the face captured by the rear camera, the foldable screen device 100 can exit the rear-camera selfie mode and switch to the front-camera selfie mode.

[0311] Optionally, in another possible implementation, the folding screen device provided in the embodiment of the present application may be a vertically folding folding screen device. The folding screen device may include a first display screen, a second display screen, and at least two groups of cameras, for example, a front camera and a rear camera. The front camera may be located on the same side as the first display screen, and the rear camera may be located on the same side as the second display screen. The second display screen may be located on the back of the first display screen. Exemplarily, the product form of the folding screen device provided in the embodiment of the present application may be as follows: Fig.18 shown.

[0312] Fig.18 Another product form schematic diagram of the folding screen device 100 is shown by way of example.

[0313] Fig.18 (a) shows the folding screen device 100 in the unfolded state. The folding screen device 100 can be folded along the folding edge in the horizontal direction of the folding screen to form Fig.18 (b) or Fig.18 The posture shown in (c) in FIG. Fig.18 As shown in (a), (b), and (c), the folding screen device 100 may include a display screen 111, and the display screen 111 may be divided into two display areas by a folding edge, for example, a display area 1111 and a display area 1112. A camera 112 may also be included on the same side of the display screen 111. A camera 113 and a display screen 114 are also included on the back of the display screen 111. The embodiment of the present application does not limit the specific positions of the cameras 112 and 113 in the folding screen device 100. The embodiment of the present application also does not limit the shape and size of the display screen 114.

[0314] by Fig.18 Taking the vertically foldable folding screen device 100 shown as an example, the automatic switching of the vertically foldable folding screen device 100 from different states to the rear selfie mode will be described in detail below.

[0315] Fig.19 It is exemplarily shown that the folding screen device 100 is in an unfolded state. When taking a selfie with the front camera, the folding screen device 100 automatically switches to the rear selfie mode after being flipped.

[0316] like Fig.19 As shown in (a) of FIG. 1 , the folding screen device 100 is in the unfolded state, the front camera is taking a selfie, the inner screen is in the on state, and the outer screen is in the off state. The preview interface 1900 displayed on the inner screen shows a preview screen 1901 taken by the front camera. Fig.19 In (a) above, the front camera can also be called the inner-screen front camera.

[0317] When it is detected that the user flips the folding screen device 100, if the folding screen device 100 detects that the size of the face captured by the rear camera (camera 113) is larger than the size of the face captured by the front camera, the folding screen device 100 turns on the rear selfie mode. Fig.19 As shown, the user can move the folding screen device 100 from Fig.19 The posture shown in (a) is flipped to Fig.19 The posture shown in (b) in the figure. Fig.19 As shown in (b) in the figure, the folding screen device 100 is in the unfolded state, and the front camera selfie mode is switched to the rear camera selfie mode. The inner screen of the folding screen device 100 is in the off state, and the outer screen is in the on state. The display screen 114 of the folding screen device 100 displays the picture 1902 captured by the rear camera.

[0318] Fig. 20 It is exemplarily shown that the folding screen device 100 is in the unfolded state. When the rear camera is shooting, the folding screen device 100 automatically switches to the rear selfie mode after being flipped.

[0319] like Fig. 20 As shown in (a) in FIG. 1 , the folding screen device 100 is in an unfolded state, the inner screen is in a light-on state, and the outer screen is in a dark-off state. The preview interface 2000 displayed on the inner screen shows a preview screen 2001 taken by the rear camera.

[0320] When it is detected that the user flips the folding screen device 100, if the folding screen device 100 detects that the size of the face captured by the rear camera (camera 113) is larger than the size of the face captured by the front camera, the folding screen device 100 turns on the rear selfie mode. Fig. 20 As shown, the user can move the folding screen device 100 from Fig. 20 The posture shown in (a) is flipped to Fig. 20 The posture shown in (b) in the figure. Fig. 20 As shown in (b) in the figure, the folding screen device 100 is in the unfolded state, and the front camera selfie mode is switched to the rear camera selfie mode. The inner screen of the folding screen device 100 is in the off state, and the outer screen is in the on state. The display screen 114 of the folding screen device 100 displays the picture 1902 captured by the rear camera.

[0321] When the folding screen device 100 enters the rear-camera selfie mode, if it is detected that the user flips the folding screen device 100 and the size of the face captured by the front camera is larger than the size of the face captured by the rear camera, the folding screen device 100 can exit the rear-camera selfie and switch to the front-camera selfie.

[0322] In the embodiment of the present application, display screens 101 and 111 can be referred to as external screens, and display screens 102, 114, and 115 can be referred to as internal screens. Camera 103 can be referred to as an external screen front camera, camera 104, camera 113, and camera 117 can be referred to as rear cameras, and camera 105, camera 112, and camera 116 can be referred to as internal screen front cameras.

[0323] It should be noted that the inner screen (e.g., display screen 102, display screen 111, display screen 114) in the embodiment of the present application is folded to form at least two display areas (e.g., display area 1021 and display area 1022, or display area 1111 and display area 1112, or display area 1151 and display area 1152), and these two display areas can be on two independent display screens. That is, the inner screen can include multiple independent display screens, or it can be a complete display screen with an integrated structure, but it is folded to form at least two parts.

[0324] For example, the inner screen may be a flexible folding screen, and the flexible folding screen includes a folding edge made of a flexible material. Part or all of the flexible folding screen is made of a flexible material. The two display areas formed after the folding screen is folded are a complete screen of an integrated structure, but are folded into at least two parts.

[0325] The embodiment of the present application does not specifically limit the materials of the inner screen and the outer screen.

[0326] In the embodiment of the present application, the first display screen may be Figure 1 The display screen 102 shown in Fig.14 The display screen 115 shown in Fig.18 The second display screen may be Figure 1 The display screen 101 shown in Fig.18 The display screen 114 is shown. The first front camera may be Figure 1 The camera 105 shown in Fig.14 The camera 116 shown in Fig.18 The second front camera may be Figure 1 The rear camera can be Figure 1 The camera 104 shown in Fig.14 The camera 117 shown in Fig.18The camera 113 is shown in FIG.

[0327] The following introduces an exemplary folding screen device 100 provided in an embodiment of the present application.

[0328] Fig.21 It is a schematic diagram of the structure of the folding screen device 100 provided in an embodiment of the present application.

[0329] The following is a specific description of the embodiment using the folding screen device 100 as an example. It should be understood that the folding screen device 100 may have more or fewer components than those shown in the figure, may combine two or more components, or may have different component configurations. The various components shown in the figure may be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and / or application-specific integrated circuits.

[0330] The folding screen device 100 may include: a processor 110, an internal memory 120, a camera 130, a display screen 140, and a sensor module 150, etc. The sensor module 150 may include a gyroscope sensor 150A, an acceleration sensor 150B, a Hall sensor 150C, etc.

[0331] It is understood that the structure illustrated in the embodiment of the present invention does not constitute a specific limitation on the folding screen device 100. In other embodiments of the present application, the folding screen device 100 may include more or fewer components than shown in the figure, or combine certain components, or split certain components, or arrange the components differently. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0332] The processor 110 may include one or more processing units, for example, the processor 110 may include an application processor (AP), a modem processor, a graphics processor (GPU), an image signal processor (ISP), a controller, a memory, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU), etc. Different processing units may be independent devices or integrated into one or more processors.

[0333] Among them, the controller can be the nerve center and command center of the folding screen device 100. The controller can generate an operation control signal according to the instruction operation code and the timing signal to complete the control of fetching and executing instructions.

[0334] The processor 110 may also be provided with a memory for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The memory may store instructions or data that the processor 110 has just used or cyclically used. If the processor 110 needs to use the instruction or data again, it may be directly called from the memory. This avoids repeated access, reduces the waiting time of the processor 110, and thus improves the efficiency of the system.

[0335] In some embodiments, the processor 110 may include one or more interfaces. The interface may include an inter-integrated circuit (I2C) interface, an inter-integrated circuit sound (I2S) interface, a pulse code modulation (PCM) interface, a universal asynchronous receiver / transmitter (UART) interface, a mobile industry processor interface (MIPI), a general-purpose input / output (GPIO) interface, a subscriber identity module (SIM) interface, and / or a universal serial bus (USB) interface, etc.

[0336] The I2C interface is a bidirectional synchronous serial bus, including a serial data line (SDA) and a serial clock line (SCL).

[0337] The I2S interface can be used for audio communication.

[0338] The PCM interface can also be used for audio communication to sample, quantize and encode analog signals.

[0339] The UART interface is a universal serial data bus used for asynchronous communication. The bus can be a bidirectional communication bus. It converts the data to be transmitted between serial communication and parallel communication.

[0340] The MIPI interface can be used to connect the processor 110 with peripheral devices such as the display screen 140 and the camera 130. The MIPI interface includes a camera serial interface (CSI), a display serial interface (DSI), etc. In some embodiments, the processor 110 and the camera 130 communicate through the CSI interface to realize the shooting function of the folding screen device 100. The processor 110 and the display screen 194 communicate through the DSI interface to realize the display function of the folding screen device 100.

[0341] The GPIO interface can be configured by software. The GPIO interface can be configured as a control signal or as a data signal. In some embodiments, the GPIO interface can be used to connect the processor 110 with the camera 130, the display 140, the sensor module 150, etc. The GPIO interface can also be configured as an I2C interface, an I2S interface, a UART interface, a MIPI interface, etc.

[0342] It is understandable that the interface connection relationship between the modules illustrated in the embodiment of the present invention is only a schematic illustration and does not constitute a structural limitation on the folding screen device 100. In other embodiments of the present application, the folding screen device 100 may also adopt different interface connection methods in the above embodiments, or a combination of multiple interface connection methods.

[0343] The folding screen device 100 implements the display function through a GPU, a display screen 140, and an application processor. The GPU is a microprocessor for image processing, connecting the display screen 140 and the application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. The processor 110 may include one or more GPUs that execute program instructions to generate or change display information.

[0344] The display screen 140 is used to display images, videos, etc. The display screen 140 includes a display panel. The display panel can be a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (AMOLED), a flexible light-emitting diode (FLED), Miniled, MicroLed, Micro-oLed, a quantum dot light-emitting diode (QLED), etc.

[0345] In the embodiment of the present application, the folding screen device 100 may include N display screens 140, where N is a positive integer greater than 1. In some examples, the value of N may be 2, and the folding screen device 100 may include two display screens 140, for example, Figure 1 The folding screen device 100 shown in the figure has two display screens, an inner screen and an outer screen.

[0346] The foldable screen device 100 can realize the shooting function through ISP, camera 130, video codec, GPU, display screen 140 and application processor.

[0347] The ISP is used to process the data fed back by the camera 130. For example, when taking a photo, the shutter is opened, and the light is transmitted to the camera photosensitive element through the lens. The light signal is converted into an electrical signal, and the camera photosensitive element transmits the electrical signal to the ISP for processing and converts it into an image visible to the naked eye. The ISP can also perform algorithm optimization on the noise, brightness, and color of the image. The ISP can also optimize the exposure, color temperature and other parameters of the shooting scene. In some embodiments, the ISP can be set in the camera 130.

[0348] The camera 130 is used to capture still images or videos. The object generates an optical image through the lens and projects it onto the photosensitive element. The photosensitive element can be a charge coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) phototransistor. The photosensitive element converts the light signal into an electrical signal, and then transmits the electrical signal to the ISP for conversion into a digital image signal. The ISP outputs the digital image signal to the DSP for processing. The DSP converts the digital image signal into an image signal in a standard RGB, YUV or other format.

[0349] In an embodiment of the present application, the folding screen device 100 may include M cameras 130, where M is a positive integer greater than 1.

[0350] In some examples, the value of M may be 3, for example Figure 1 The folding screen device 100 shown in the figure may include three cameras, such as a rear camera, an inner screen front camera, and an outer screen front camera.

[0351] In some other examples, the value of M may be 2, for example, Fig.14 or Fig.18 The folding screen device 100 shown in the figure may include two cameras, such as a rear camera and a front camera.

[0352] The digital signal processor is used to process digital signals. In addition to processing digital image signals, it can also process other digital signals. For example, when the folding screen device 100 is selecting a frequency point, the digital signal processor is used to perform Fourier transform on the frequency point energy.

[0353] Video codecs are used to compress or decompress digital videos. The foldable screen device 100 can support one or more video codecs. In this way, the foldable screen device 100 can play or record videos in multiple encoding formats, such as: Moving Picture Experts Group (MPEG) 1, MPEG2, MPEG3, MPEG4, etc.

[0354] NPU is a neural network (NN) computing processor. By drawing on the structure of biological neural networks, such as the transmission mode between neurons in the human brain, it can quickly process input information and can also continuously self-learn. Through NPU, applications such as intelligent cognition of the folding screen device 100 can be realized, such as: image recognition, face recognition, voice recognition, text understanding, etc.

[0355] The internal memory 120 can be used to store computer executable program codes, which include instructions. The processor 110 executes various functional applications and data processing of the folding screen device 100 by running the instructions stored in the internal memory 120. The internal memory 120 may include a program storage area and a data storage area. Among them, the program storage area may store an operating system, applications required for at least one function (such as face recognition function, fingerprint recognition function, mobile payment function, etc.), etc. The data storage area may store data created during the use of the folding screen device 100 (such as face information template data, fingerprint information template, etc.), etc. In addition, the internal memory 120 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, a universal flash storage (UFS), etc.

[0356] The gyroscope sensor 150A can be used to determine the motion posture of the folding screen device 100. In some embodiments, the angular velocity of the folding screen device 100 around three axes (ie, x, y, and z axes) can be determined by the gyroscope sensor 150A. The gyroscope sensor 150A can be used for anti-shake shooting. Exemplarily, when the shutter is pressed, the gyroscope sensor 150A detects the angle of the shaking of the folding screen device 100, calculates the distance that the lens module needs to compensate based on the angle, and allows the lens to offset the shaking of the folding screen device 100 through reverse movement to achieve anti-shake. The gyroscope sensor 150A can also be used for navigation and somatosensory game scenes.

[0357] The acceleration sensor 150B can detect the magnitude of the acceleration of the folding screen device 100 in various directions (generally three axes). When the folding screen device 100 is stationary, the magnitude and direction of gravity can be detected. It can also be used to identify the posture of the electronic device, and is applied to applications such as horizontal and vertical screen switching, pedometers, etc.

[0358] The Hall sensor 150C can be used to detect whether the folding screen device 100 is flipped, and to detect the angle between the two display areas of the inner screen.

[0359] In an embodiment of the present application, the folding screen device 100 can determine the state of the folding screen device 100, whether it is a folded state or an unfolded state, based on the gyroscope sensor 150A and / or the acceleration sensor 150B. The folding screen device 100 can detect that the folding screen device 100 receives a flip operation from the user based on the acceleration sensor 150B and / or the Hall sensor 150C. Alternatively, the folding screen device 100 can detect that the folding screen device 100 receives a flip operation from the user based on the gyroscope sensor 150A and / or the acceleration sensor 150B.

[0360] For a better understanding Fig.21 The software structure of the folding screen device 100 is shown, and the software structure of the folding screen device 100 is described below. Before describing the software structure of the folding screen device 100, the architecture that can be adopted by the software system of the folding screen device 100 is first described.

[0361] Specifically, in actual applications, the software system of the folding screen device 100 can adopt a layered architecture, an event-driven architecture, a microkernel architecture, a microservice architecture, or a cloud architecture.

[0362] In addition, it is understandable that the software systems currently used by mainstream electronic devices include but are not limited to Windows systems, Android systems, and iOS systems. For ease of explanation, the embodiment of the present application takes the layered Android system as an example to illustrate the software structure of the folding screen device 100.

[0363] In addition, the subsequent camera request processing method provided in the embodiment of the present application is also applicable to other systems in specific implementation.

[0364] Fig. 22 A schematic diagram of the software and hardware architecture of a camera service on a folding screen device 100 provided in an embodiment of the present application is shown.

[0365] like Fig. 22As shown, the software and hardware architecture of the folding screen device 100 includes a software system and a hardware layer that implements related camera services (for example, preview, photo taking, video recording, etc.) together with the software structure. Among them, the layered architecture divides the software system of the folding screen device 100 into several layers, and each layer has a clear role and division of labor. The layers communicate with each other through software interfaces. In some embodiments, the system is divided into four layers, from top to bottom, namely, the application layer (application layer), the application framework layer (framework layer, FWK), the hardware abstraction layer (hardware abstraction layer, HAL), and the drive layer (drive layer).

[0366] The application layer can include a series of application packages. Fig. 22 As shown, the application package may include a camera application.

[0367] Optionally, the application package may also include application programs (also referred to as applications) such as gallery, calendar, call, map, navigation, WLAN, Bluetooth, music, video, short message, etc. The present application embodiment does not limit this.

[0368] The application framework layer provides an application programming interface (API) and a programming framework for the application packages of the application layer. The application framework layer includes some predefined functions.

[0369] In some embodiments, the application framework layer may include a camera interface. For example, the camera interface may include an image acquisition interface and an interface for continuously acquiring images.

[0370] In some embodiments, the application framework layer may further include a camera server module. The camera server module may receive a camera request sent by the camera application through a camera interface. The camera server module may also send the received camera request to a camera hardware abstraction layer (camera HAL).

[0371] In the application embodiment, the camera request may include a preview request, a photo request, a video recording request, etc. The embodiment of the application does not limit the specific type of request the camera request is.

[0372] In some embodiments, the application framework layer may further include a rendering process module. The rendering process module may be used to render the image frame sent by the camera application, and send the rendering result (i.e., the rendered image frame) to the camera application. The camera application may display the rendering result.

[0373] In some embodiments, the application framework layer may also be referred to as the application framework layer.

[0374] The hardware abstraction layer HAL is an interface layer located between the application framework layer and the driver layer, providing a virtual hardware platform for the operating system.

[0375] The hardware abstraction layer HAL may include a camera hardware abstraction layer. The camera hardware abstraction layer may be used to receive camera requests sent by the application framework layer, and send the camera parameters in the camera request to the camera module through the driver layer. The camera hardware abstraction layer may also call the result return interface (e.g., ProcessCaptureResult) to send the image frame obtained by the camera module according to the camera parameters to the result processing module in the application framework layer.

[0376] Optionally, the camera hardware abstraction layer may store the image frames acquired by the camera module into a buffer address corresponding to the camera request, and send the buffer address to a result processing module in the application framework layer.

[0377] In the embodiment of the present application, the camera request corresponding to the image frame refers to a camera request that includes camera parameters for obtaining the image frame. That is, the camera can obtain the image frame according to the camera parameters in the camera request. Exemplarily, the camera obtains image frame 1 according to the camera parameters in camera request 1, then camera request 1 can be called the camera request corresponding to image frame 1.

[0378] The driver layer is a layer between hardware and software. The driver layer includes drivers for various hardware. The driver layer may include camera drivers, image processor drivers, and display drivers, etc. Among them, the camera driver is used to drive the image sensors (e.g., image sensor 1, image sensor 2, etc.) of one or more cameras in the camera module to capture images and drive the image signal processor to pre-process the image. The image processor driver is used to drive the graphics processor to process images. The display driver is used to drive the display screen.

[0379] The hardware layer may include multiple camera modules (for example, a rear camera module, an internal screen front camera module, and an external screen front camera module, etc.), an image signal processor (ISP), a display, and the like. The rear camera module, the internal screen front camera module, and any one of the external screen front camera modules or the rear camera module may include one or more camera image sensors (for example, image sensor 1, image sensor 2, etc.). Optionally, the rear camera module, the internal screen front camera module, and any one of the external screen front camera modules or the rear camera module may also include a time of flight (TOF) sensor, a multispectral sensor, and the like. The image signal processor may be used to process image frames captured by the camera module. The display screen may be used to display image frames sent by the camera application. The display screen includes an internal screen and an external screen. The internal screen is a foldable display screen.

[0380] In an embodiment of the present application, the camera hardware abstraction layer can also report the size of the face frame in the image captured by each camera module to the camera service. The camera service can compare the size of the face frame in the image captured by each camera module. The camera service can also decide which camera module to send the image captured to the display screen.

[0381] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0382] As used in the above embodiments, the term "when..." may be interpreted to mean "if..." or "after..." or "in response to determining..." or "in response to detecting...", depending on the context. Similarly, the phrases "upon determining..." or "if (the stated condition or event) is detected" may be interpreted to mean "if determining..." or "in response to determining..." or "upon detecting (the stated condition or event)" or "in response to detecting (the stated condition or event)", depending on the context.

[0383] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that contains one or more available media integration. The available medium can be a magnetic medium, (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state hard disk), etc.

[0384] Those skilled in the art can understand that to implement all or part of the processes in the above-mentioned embodiments, the processes can be completed by computer programs to instruct related hardware, and the programs can be stored in computer-readable storage media. When the programs are executed, they can include the processes of the above-mentioned method embodiments. The aforementioned storage media include: ROM or random access memory RAM, magnetic disk or optical disk and other media that can store program codes.

Claims

1. A shooting method, characterized in that: Applied to a folding screen device, the folding screen device includes a first display screen and at least two cameras, the first display screen can be folded into at least two display areas, the at least two cameras include a first front camera and a rear camera, the first front camera and the first display screen are located on the same side, and the rear camera is located on the back of the first display screen, the method includes: The folding screen device turns on one of the at least two cameras and displays a picture taken by the one of the at least two cameras; receiving and responding to a first operation of a user, automatically setting the first front camera and the rear camera to be in an on state; When the distance between the user and the rear camera is smaller than the distance between the user and the first front camera, the folding screen device displays a picture taken by the rear camera, and the picture includes a portrait of the user.

2. The method according to claim 1, characterized in that The folding screen device also includes a second display screen, which is located on the back of the first display screen.

3. The method according to claim 2, characterized in that The folding screen device turns on one of the at least two cameras and displays a picture taken by the one of the at least two cameras, including: The folding screen device is in an unfolded state, the first front camera is turned on, and a picture taken by the first front camera is displayed on the first display screen; Receiving and responding to a first operation of a user, automatically setting the first front camera and the rear camera to be in an on state, including: Receiving and responding to a user's flipping operation on the folding screen device, the folding screen device automatically turns on the rear camera; When the distance between the user and the rear camera is smaller than the distance between the user and the first front camera, the folding screen device displays the picture taken by the rear camera, including: When the distance between the user and the rear camera is smaller than the distance between the user and the first front camera, the folding screen device displays the picture taken by the rear camera on the second display screen.

4. The method according to claim 3, characterized in that When the folding screen device automatically turns on the rear camera, the method further includes: The folding screen device displays the image captured by the first front camera on the first display screen, while the image captured by the rear camera is not displayed.

5. The method according to claim 2, characterized in that: The folding screen device turns on one of the at least two cameras and displays a picture taken by the one of the at least two cameras, including: The folding screen device is in an unfolded state, the rear camera is turned on, and the image captured by the rear camera is displayed on the first display screen; Receiving and responding to a first operation of a user, automatically setting the first front camera and the rear camera to be in an on state, including: Receiving and responding to a user's flipping operation on the folding screen device, the folding screen device automatically turns on the first front camera; When the distance between the user and the rear camera is smaller than the distance between the user and the first front camera, the folding screen device displays the picture taken by the rear camera, including: When the distance between the user and the rear camera is smaller than the distance between the user and the first front camera, the folding screen device displays the picture taken by the rear camera on the second display screen.

6. The method according to claim 5, characterized in that When the folding screen device automatically turns on the first front camera, the method further includes: The folding screen device displays the image captured by the rear camera on the first display screen, while the image captured by the first front camera is not displayed.

7. The method according to claim 2, characterized in that The at least two cameras also include a second front camera, and the second front camera and the second display screen are located on the same side.

8. The method according to claim 7, characterized in that The folding screen device turns on one of the at least two cameras and displays a picture taken by the one of the at least two cameras, including: The folding screen device is in a folded state, the first display screen is folded, the folding screen device turns on the second front camera, and displays a picture taken by the second front camera on the second display screen; Receiving and responding to a first operation of a user, automatically setting the first front camera and the rear camera to be in an on state, including: Receiving and responding to an operation of a user switching the folding screen device from a folded state to an unfolded state, the folding screen device automatically turning on the first front camera and the rear camera; When the distance between the user and the rear camera is smaller than the distance between the user and the first front camera, the folding screen device displays the picture taken by the rear camera, including: When the distance between the user and the rear camera is smaller than the distance between the user and the first front camera, the folding screen device displays the picture taken by the rear camera on the second display screen.

9. The method according to claim 8, characterized in that When the folding screen device automatically turns on the first front camera and the rear camera, the method further includes: The folding screen device displays the image captured by the first front camera on the first display screen, while the image captured by the rear camera is not displayed.

10. The method according to claim 9, characterized in that The method further comprises: In response to receiving and switching the folding screen device from a folded state to an unfolded state by a user, the folding screen device turns off the second front camera.

11. The method according to claim 2, characterized in that The folding screen device turns on one of the at least two cameras and displays a picture taken by the one of the at least two cameras, including: The folding screen device is in a folded state, the first display screen is folded, the folding screen device turns on the rear camera, and displays the picture taken by the rear camera on the second display screen; Receiving and responding to a first operation of a user, automatically setting the first front camera and the rear camera to be in an on state, including: Receiving and responding to an operation of a user switching the folding screen device from a folded state to an unfolded state, the folding screen device automatically turning on the first front camera; When the distance between the user and the rear camera is smaller than the distance between the user and the first front camera, the folding screen device displays the picture taken by the rear camera, including: When the distance between the user and the rear camera is smaller than the distance between the user and the first front camera, the folding screen device displays the picture taken by the rear camera on the second display screen.

12. The method according to claim 11, characterized in that When the folding screen device automatically turns on the first front camera, the method further includes: The folding screen device displays the image captured by the rear camera on the first display screen, while the image captured by the first front camera is not displayed.

13. The method according to claim 1, characterized in that The at least two display areas include a first display area and a second display area. When the folding screen device is in a folded state, the second display area is located on the back of the first display area, and the first front camera is located on the same side as the first display area.

14. The method according to claim 13, characterized in that The folding screen device turns on one of the at least two cameras and displays a picture taken by the one of the at least two cameras, including: The folding screen device is in an unfolded state, the first front camera is turned on, and a picture taken by the first front camera is displayed on the first display screen; Receiving and responding to a first operation of a user, automatically setting the first front camera and the rear camera to be in an on state, including: Receiving and responding to an operation of a user switching the folding screen device from a folded state to an unfolded state, the folding screen device automatically turning on the rear camera; When the distance between the user and the rear camera is smaller than the distance between the user and the first front camera, the folding screen device displays the picture taken by the rear camera, including: When the distance between the user and the rear camera is smaller than the distance between the user and the first front camera, the folding screen device displays the picture taken by the rear camera in the second display area.

15. The method according to claim 13, characterized in that The folding screen device turns on one of the at least two cameras and displays a picture taken by the one of the at least two cameras, including: The folding screen device is in a folded state, the first front camera is turned on, and a picture taken by the first front camera is displayed in the first display area; Receiving and responding to a first operation of a user, automatically setting the first front camera and the rear camera to be in an on state, including: Receiving and responding to a user's flipping operation on the folding screen device, the folding screen device automatically turns on the rear camera; When the distance between the user and the rear camera is smaller than the distance between the user and the first front camera, the folding screen device displays the picture taken by the rear camera, including: When the distance between the user and the rear camera is smaller than the distance between the user and the first front camera, the folding screen device displays the picture taken by the rear camera in the second display area.

16. The method according to claim 14 or 15, characterized in that When the folding screen device automatically turns on the rear camera, the method further includes: The folding screen device displays the picture taken by the first front camera in the first display area, and the picture taken by the rear camera is not displayed or is displayed in the second display area.

17. The method according to claim 13, characterized in that The folding screen device turns on one of the at least two cameras and displays a picture taken by the one of the at least two cameras, including: The folding screen device is in a folded state, the rear camera is turned on, and the images captured by the rear and front cameras are displayed in the first display area; Receiving and responding to a first operation of a user, automatically setting the first front camera and the rear camera to be in an on state, including: Receiving and responding to a user's flipping operation on the folding screen device, the folding screen device automatically turns on the first front camera; When the distance between the user and the rear camera is smaller than the distance between the user and the first front camera, the folding screen device displays the picture taken by the rear camera, including: When the distance between the user and the rear camera is smaller than the distance between the user and the first front camera, the folding screen device displays the picture taken by the rear camera in the second display area.

18. The method according to claim 17, characterized in that When the folding screen device automatically turns on the first front camera, the method further includes: The folding screen device displays the picture taken by the rear camera in the first display area, and the picture taken by the first front camera is not displayed or is displayed in the second display area.

19. The method according to any one of claims 14, 15 and 18, characterized in that: The method further comprises: When the distance between the user and the rear camera is less than the distance between the user and the first front camera, the folding screen device powers off the first display area, so that the first display area is in an off state.

20. The method according to any one of claims 4, 6, 10, 12, 14, 15, and 18, characterized in that: The method further comprises: When the distance between the user and the rear camera is less than the distance between the user and the first front camera, the folding screen device turns off the first front camera.

21. The method according to claim 20, characterized in that When the distance between the user and the rear camera is less than the distance between the user and the first front camera, after the folding screen device displays the picture taken by the rear camera, the method further includes: After detecting a flipping operation on the folding screen device, turning on the first front camera; When the distance between the user and the rear camera is greater than the distance between the user and the first front camera, the rear camera is turned off, and a picture taken by the first front camera is displayed on the first display screen.

22. The method according to claim 21, characterized in that When the first front camera and the rear camera are turned on, the method further includes: When the size of the face in the picture taken by the first front camera is smaller than the size of the face in the picture taken by the rear camera, determining that the distance between the user and the rear camera is smaller than the distance between the user and the first front camera; When the size of the face in the picture taken by the first front camera is larger than the size of the face in the picture taken by the rear camera, it is determined that the distance between the user and the rear camera is larger than the distance between the user and the first front camera.

23. A folding screen device, characterized in that: include: At least one display screen, at least two cameras, one or more processors, and one or more memories; The at least one display screen includes a first display screen, which is foldable. The first display screen, the at least two cameras, and the one or more memories are respectively coupled to the one or more processors; the one or more memories are used to store computer program codes, and the computer program codes include computer instructions; when the computer instructions are executed on the processor, the folding screen device executes the method described in any one of claims 1-22.

24. A folding screen device, characterized in that: The method comprises one or more functional modules, wherein the one or more functional modules are used to execute the method according to any one of claims 1 to 22.

25. A chip, characterized in that: include: A processor and an interface, wherein the processor and the interface cooperate with each other so that the chip executes the method as described in any one of claims 1-22.

26. A computer-readable storage medium, characterized in that: The method comprises computer instructions, which, when executed on an electronic device, cause the electronic device to execute the method according to claims 1 to 22.

27. A computer program product, characterized in that When the computer program product is run on a computer, the computer is caused to perform the method according to any one of claims 1 to 22.

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