Auxiliary photography method, device, terminal equipment and storage medium

Abstract

The present application discloses an auxiliary photography method, apparatus, terminal device and storage medium. The auxiliary photography method comprises: when a microscope lens is started, a first mark is displayed on a display screen; wherein the first mark is used to mark a projection area of ​​the microscope lens on the display screen.

Description

Technical Field

[0001] The present application relates to the field of photographing technology, and in particular to an auxiliary photographing method, device, terminal equipment and storage medium. Background Art

[0002] In the related art, when shooting tiny objects, the microscope lens of the mobile phone needs to be placed close to the object to capture a clear image. However, the microscope lens of the mobile phone is too close to the object and the field of view (FOV) of the microscope lens is relatively small, which makes it difficult to frame the image during shooting. Summary of the invention

[0003] In view of this, the embodiments of the present application provide an auxiliary photography method, apparatus, terminal device and storage medium to solve the technical problem of framing difficulty existing in the related art.

[0004] To achieve the above purpose, the technical solution of this application is implemented as follows:

[0005] The present application provides an auxiliary photography method, including:

[0006] When the microscope lens is activated, a first mark is displayed on the display screen; wherein,

[0007] The first mark is used to mark the projection area of ​​the microscope lens on the display screen.

[0008] In the above scheme, the method further includes:

[0009] Determining a display area of ​​the preview window in the display screen according to the position of the first mark;

[0010] The preview window does not overlap with the first mark, or the preview window overlaps with the first mark.

[0011] In the above scheme, the method further includes:

[0012] Two mutually perpendicular extension lines intersecting at the center of the first mark are displayed; wherein the two mutually perpendicular extension lines are respectively parallel to the length direction and the width direction of the display screen.

[0013] In the above solution, the first mark includes a cross mark or a circular mark.

[0014] In the above scheme, the method further includes at least one of the following:

[0015] Displaying a second mark; the second mark is used to mark the projection area of ​​the focus area on the display screen;

[0016] Based on the first mark and the second mark, guide information is output; wherein the guide information is used to instruct the user to move the terminal device to frame.

[0017] In the above solution, displaying the first mark on the display screen includes:

[0018] When the setting function is activated, the first mark is displayed on the display screen; wherein,

[0019] The setting function represents a function for positioning the microscope lens when the microscope lens is photographing.

[0020] In the above solution, the center of the first mark coincides with the projection position of the optical center of the microscope lens on the display screen.

[0021] The embodiment of the present application also provides an auxiliary photographing device, including:

[0022] The display unit is used to display a first mark on a display screen when the microscope lens is activated; wherein the first mark is used to mark a projection area of ​​the microscope lens on the display screen.

[0023] An embodiment of the present application also provides a terminal device, comprising: a processor and a memory for storing a computer program that can be run on the processor, wherein the processor is used to execute the steps of any of the above-mentioned auxiliary photography methods when running the computer program.

[0024] An embodiment of the present application further provides a computer-readable storage medium on which a computer program is stored, wherein the computer program implements the steps of any of the above-mentioned auxiliary photography methods when executed by a processor.

[0025] In the embodiment of the present application, when the microscope lens is activated, a first mark is displayed on the display screen; wherein the first mark is used to mark the projection area of ​​the microscope lens on the display screen. Thus, the actual position of the microscope lens can be intuitively reflected, and the user can aim the microscope lens at the tiny object or the photographed area according to the position of the first mark, thereby reducing the difficulty of framing and improving the shooting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of photographing using a microscope lens provided in an embodiment of the present application;

[0027] Figure 2 A schematic diagram of an image formed by a microscope lens provided in an embodiment of the present application;

[0028] Figure 3 A schematic diagram of the imaging principle of the microscope lens provided in an embodiment of the present application;

[0029] Figure 4 A schematic diagram of the projection area of ​​the microscope lens on the display screen provided in an embodiment of the present application;

[0030] Figure 5 A schematic diagram of a first mark provided in an embodiment of the present application;

[0031] Figure 6 A schematic diagram of an extension line of the center of a first mark provided in an embodiment of the present application;

[0032] Figure 7 A schematic diagram of an extension line of the center of a first mark provided in another embodiment of the present application;

[0033] Figure 8 A schematic diagram of the implementation process of the auxiliary photography method provided in the application embodiment of the present application;

[0034] Fig. 9 A schematic diagram of the structure of the auxiliary photographing device provided in an embodiment of the present application;

[0035] Fig.10 A schematic diagram of the hardware composition structure of a terminal device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0036] In the related art, the viewing angle and object distance of the microscope lens are very small. For example, the object distance of the microscope lens is usually within 2 centimeters (cm), but not limited to 2 cm, and even less than 1 cm. Figure 1 As shown in FIG. 1 , since the mirror surface of the microscope lens is almost in contact with the surface of the object being photographed, users often observe from the side while moving the mobile phone to frame the image. Figure 2 As shown in the figure, after framing the image, the user clicks the camera button to take a photo. However, during the shooting process, it is difficult for the user to see the microscope lens, determine the position of the microscope lens in the phone, and aim the microscope lens at the object being photographed. Framing is difficult and the shooting efficiency is low. The imaging principle of the microscope lens is as follows:

[0037] like Figure 3 As shown, when the object distance of the microscope lens is less than 1 times the focal length, an erect, magnified virtual image will be formed on the same side of the object.

[0038] Based on this, in various embodiments of the present application, when the microscope lens is activated, a first mark is displayed on the display screen; wherein the first mark is used to mark the projection area of ​​the microscope lens on the display screen. Thus, the actual position of the microscope lens can be intuitively reflected, and the user can aim the microscope lens at the tiny object or the photographed area according to the position of the first mark, which reduces the difficulty of framing and improves the shooting efficiency.

[0039] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0040] The auxiliary photography method provided in the embodiment of the present application includes:

[0041] When the microscope lens is activated, a first mark is displayed on the display screen; wherein the first mark is used to mark a projection area of ​​the microscope lens on the display screen.

[0042] Among them, the executor of the auxiliary photography method is a terminal device such as a mobile phone, a tablet, a wearable device, etc., and a microscope lens is provided in the terminal device.

[0043] Here, the user selects the first shooting mode of taking pictures with a microscope lens through the shooting interface of the terminal device. When the terminal device detects that it is currently entering the first shooting mode, it starts the microscope lens. If the terminal device does not store the position information of the projection area of ​​the microscope lens on the display screen, the terminal device determines the projection area of ​​the microscope lens on the display screen of the terminal device based on the position of the microscope lens in the terminal device; based on the determined position information of the projection area, the first mark is displayed. The projection area refers to the area formed by the projection outline of the microscope lens on the display screen. The first mark is used to assist framing.

[0044] In the case where the position information of the projection area of ​​the microlens on the display screen is pre-stored in the terminal device, the first mark is displayed based on the position information of the projection area of ​​the microlens on the display screen.

[0045] In order to facilitate the user to identify the projection area of ​​the microscope lens on the display screen, in some embodiments, the first mark includes a cross mark or a circular mark.

[0046] like Figure 4 As shown in , a circular mark is used to mark the projection area, and the circular mark coincides with the projection area. Figure 5 As shown, a cross mark is used to mark the projection area, and a circle with the cross mark as the diameter is the projection area. It should be noted that in actual application, the first mark can also be a mark of other shapes.

[0047] In order to accurately mark the projection area of ​​the microscope lens on the display screen to facilitate user framing, in some embodiments, the center of the first mark coincides with the projection position of the optical center of the microscope lens on the display screen.

[0048] In actual application, in order to facilitate users to know the position of the optical center of the microscope lens, the terminal device can also display the center of the first mark, and the center of the first mark coincides with the projection position of the optical center of the microscope lens on the display screen.

[0049] In the embodiment of the present application, when the microscope lens is activated, a first mark is displayed on the display screen; wherein the first mark is used to mark the projection area of ​​the microscope lens on the display screen. Thus, the position of the microscope lens can be intuitively reflected, and the user can aim the microscope lens at the tiny object or the photographed area according to the position of the first mark, so as to take pictures, thereby reducing the difficulty of framing and improving shooting efficiency.

[0050] In some embodiments, displaying the first mark on the display screen includes:

[0051] When the setting function is activated, the first mark is displayed on the display screen; wherein,

[0052] The setting function represents a function for positioning the microscope lens when the microscope lens is photographing.

[0053] Here, the terminal device is also provided with a setting function. The user can activate the setting function through the photo taking interface or the setting interface to start the microscope lens in the terminal device. In other words, starting the microscope lens is a necessary condition for activating the setting function.

[0054] When the terminal device detects that the setting function is currently activated, the terminal device displays the first mark on the display screen of the terminal device. Thus, the user can decide whether to activate the setting function according to actual needs, thereby improving the flexibility of operation.

[0055] Considering that the position of the first mark is fixed after the terminal device leaves the factory, in some embodiments, the method further includes:

[0056] A display area of ​​the preview window in the display screen is determined according to the position of the first mark; the preview window does not overlap with the first mark, or the preview window overlaps with the first mark.

[0057] Here, when the terminal device enters the first photographing mode, the display area of ​​the preview window in the display screen is determined according to the position of the first mark, and the preview window is displayed in the determined display area, so that the preview image imaged by the microscope lens is displayed in the preview window. Thus, the terminal device can flexibly determine the display area of ​​the preview window according to the position of the first mark.

[0058] The display area of ​​the preview window and the display area of ​​the first mark may overlap, for example, the first mark is displayed in a stacked manner on the preview window; the display area of ​​the preview window and the display area of ​​the first mark may not overlap.

[0059] In order to prevent the first mark from blocking part of the preview image in the preview window and to allow the user to accurately identify the first mark, in some embodiments, the preview window and the first mark do not overlap.

[0060] Here, the preview window and the first mark are displayed in non-overlapping display areas, respectively.

[0061] In order to facilitate the user to quickly and accurately align the microscope lens with the photographed area or object, in some embodiments, the method further includes:

[0062] Two mutually perpendicular extension lines intersecting at the center of the first mark are displayed; wherein the two mutually perpendicular extension lines are respectively parallel to the length direction and the width direction of the display screen.

[0063] Here, the first mark is a mark with a symmetrical shape. When the terminal device displays the first mark on the display screen, a first extension line passing through the center of the first mark is displayed in the length direction of the display screen, and a second extension line passing through the center of the first mark is displayed in the width direction of the display screen. The first extension line and the second extension line are perpendicular to each other. Figure 5 In the case of the crosshairs shown, the terminal device displays Figure 6 or Figure 7 Extension cord shown.

[0064] In this embodiment, the user can move the terminal device according to the two mutually perpendicular extension lines displayed and the preview image in the preview window, so as to align the microscope lens in the mobile terminal device with the photographed area or object.

[0065] In order to improve the user's framing efficiency, in some embodiments, the method further includes at least one of the following:

[0066] Displaying a second mark; the second mark is used to mark the projection area of ​​the focus area on the display screen;

[0067] Based on the first mark and the second mark, guide information is output; wherein the guide information is used to instruct the user to move the terminal device to frame.

[0068] Here, the focus area refers to the focused photographed area. The focus area can be the focus area when the terminal device works in the automatic focus mode or the manual focus mode.

[0069] Regardless of whether the terminal device displays two mutually perpendicular extension lines intersecting at the center of the first mark, the terminal device can determine the projection area of ​​the focus area on the display screen based on the position of the image in the focus frame on the display screen and the imaging principle of the microscope lens, and display the second mark based on the projection area of ​​the focus area on the display screen. The following takes manual focus as an example to illustrate the implementation process of displaying the second mark:

[0070] The user can search for the part of the image that he is interested in in the preview image displayed in the preview window, and click on the location of the part of the image that he is interested in to focus on the corresponding photographed area. At this time, the terminal device displays the focus frame based on the location clicked by the user; based on the imaging principle of the microscope lens and the image position in the focus frame, the photographed area corresponding to the image in the focus frame is determined to obtain the focus area; the determined focus area is projected onto the display screen to obtain the projection area of ​​the focus area on the display screen; based on the position information of the projection area of ​​the photographed area on the display screen, the second mark is displayed. Thus, the user can more intuitively see how far the focused photographed area deviates from the microscope lens and the direction of the deviation from the microscope lens based on the second mark and the first mark corresponding to the focused photographed area. In this way, the user moves the terminal device according to the relative position of the first mark and the second mark, so that the second mark is constantly close to the first mark, or the second mark overlaps with the first mark, and then the microscope lens is aligned with the focused photographed area.

[0071] In the case where the first mark and the second mark are displayed, the terminal device may also output guidance information based on the displayed first mark and the second mark, so that the user can move the terminal device according to the guidance information and then align the microscope lens with the focused photographed area. The guidance information may be displayed on the display screen, for example, as an indicator arrow, or may be announced by voice. The guidance information is used to guide the user to move the terminal device, for example, please move a little to the left.

[0072] It should be noted that the above example illustrates a scenario in which the second mark is used to mark the projection area of ​​the focus area of ​​the microscope lens on the display screen. In actual application, the second mark can also be used to mark the projection area of ​​the focus area of ​​the main camera on the display screen. For example, when taking pictures with a microscope lens, and the user determines that there is no image of the area of ​​interest to the user in the preview window (for example, the photographed area is outside the viewing angle of the microscope lens), the user can activate the function of using the main lens in the terminal device to assist in locating the photographed area. When the terminal device detects that the function is currently activated, the microscope lens is turned off and the main camera is turned on, and a preview image imaged by the main camera is displayed in the preview window, and the user can circle the part of the image of interest in the preview image. The terminal device determines the corresponding focus area based on the part of the image circled by the user, displays the corresponding second mark on the display screen, and the terminal device turns off the main camera and restarts the microscope lens so that the user can move the microscope lens to frame based on the first mark and the second mark. As a result, it is convenient to frame the photographed area outside the viewing angle of the microscope lens.

[0073] Figure 8 The following is a schematic diagram of the implementation process of the auxiliary photography method provided in the application embodiment of the present application. Figure 8 As shown, the auxiliary photography method includes:

[0074] Step 801: When the microscope lens is activated, a first mark is displayed on a display screen; wherein the first mark is used to mark a projection area of ​​the microscope lens on the display screen.

[0075] Step 802: Determine a display area of ​​a preview window in the display screen according to the position of the first mark, wherein the preview window does not overlap with the first mark.

[0076] Step 803: Display two mutually perpendicular extension lines intersecting at the center of the first mark; wherein the two mutually perpendicular extension lines are respectively parallel to the length direction and the width direction of the display screen.

[0077] It should be noted that for the implementation process of step 801 to step 803, please refer to the relevant description in the previous text and will not be repeated here.

[0078] In order to implement the auxiliary photographing method of the embodiment of the present application, the embodiment of the present application also provides an auxiliary photographing device, such as Fig. 9 As shown, the auxiliary photographing device comprises:

[0079] The display unit 91 is used to display a first mark on the display screen when the microscope lens is activated; wherein the first mark is used to mark the projection area of ​​the microscope lens on the display screen.

[0080] In some embodiments, the auxiliary photographing device further includes:

[0081] A determining unit is used to determine a display area of ​​the preview window in the display screen according to the position of the first mark; the preview window does not overlap with the first mark, or the preview window overlaps with the first mark.

[0082] In some embodiments, the display unit 91 is further used to:

[0083] Two mutually perpendicular extension lines intersecting at the center of the first mark are displayed; wherein the two mutually perpendicular extension lines are respectively parallel to the length direction and the width direction of the display screen.

[0084] In some embodiments, the center of the first mark coincides with a projection position of the optical center of the microscope lens on the display screen.

[0085] In some embodiments, the first mark includes a cross mark or a circular mark.

[0086] In some embodiments, the display unit 91 is further used to: display a second mark; the second mark is used to mark the projection area of ​​the focus area on the display screen;

[0087] In some embodiments, the auxiliary photographing device further includes:

[0088] An output unit is used to output guidance information based on the first mark and the second mark; wherein the guidance information is used to instruct the user to move the terminal device to frame.

[0089] In some embodiments, the display unit 91 is specifically used to: display the first mark on the display screen when a setting function is activated; wherein the setting function represents a function for positioning the microscope lens when the microscope lens is photographing.

[0090] In actual application, the display unit 91 and the determination unit can be realized by a processor in the auxiliary photographing device, such as a central processing unit (CPU), a digital signal processor (DSP), a microcontroller unit (MCU) or a programmable gate array (FPGA), and the output unit can be realized by a communication interface and a processor in the auxiliary photographing device.

[0091] It should be noted that: the auxiliary photography device provided in the above embodiment only uses the division of the above program modules as an example to illustrate when performing auxiliary photography. In actual applications, the above processing can be assigned to different program modules as needed, that is, the internal structure of the device is divided into different program modules to complete all or part of the above-described processing. In addition, the auxiliary photography device provided in the above embodiment and the auxiliary photography method embodiment belong to the same concept, and the specific implementation process is detailed in the method embodiment, which will not be repeated here.

[0092] Based on the hardware implementation of the above program modules, and in order to implement the method of the embodiment of the present application, the embodiment of the present application also provides a terminal device. Fig.10 Schematic diagram of the hardware structure of the terminal device in the embodiment of the present application. Fig.10 As shown, the terminal device 10 includes:

[0093] Communication interface 110, capable of exchanging information with other devices such as network devices;

[0094] The processor 120 is connected to the communication interface 110 to implement information exchange with other devices, and is used to execute the auxiliary photography method provided by one or more technical solutions when running a computer program. The computer program is stored in the memory 130.

[0095] Of course, in actual application, the various components in the terminal device 10 are coupled together through the bus system 140. It can be understood that the bus system 140 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 140 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, Fig.10 Various buses are labeled as bus system 140 .

[0096] The memory 130 in the embodiment of the present application is used to store various types of data to support the operation of the terminal device 10. Examples of such data include: any computer program used to operate on the terminal device 10.

[0097] It can be understood that the memory 130 can be a volatile memory or a non-volatile memory, and can also include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a magnetic random access memory (FRAM), a flash memory, a magnetic surface memory, an optical disk, or a compact disc read-only memory (CD-ROM); the magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), synchronous static random access memory (SSRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct rambus random access memory (DRRAM).The memory 130 described in the embodiments of the present application is intended to include but is not limited to these and any other suitable types of memories.

[0098] The method disclosed in the above embodiment of the present application can be applied to the processor 120, or implemented by the processor 120. The processor 120 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by an integrated logic circuit of the hardware in the processor 120 or an instruction in the form of software. The above processor 120 may be a general-purpose processor, a DSP, or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The processor 120 can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. In combination with the steps of the method disclosed in the embodiment of the present application, it can be directly embodied as a hardware decoding processor to execute, or it can be executed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, which is located in the memory 130, and the processor 120 reads the program in the memory 130 and completes the steps of the above method in combination with its hardware.

[0099] Optionally, when the processor 120 executes the program, it implements the corresponding processes implemented by the terminal in each method of the embodiments of the present application, which will not be described here for the sake of brevity.

[0100] In an exemplary embodiment, the present application also provides a storage medium, namely a computer storage medium, specifically a computer-readable storage medium, for example, including a first memory 130 storing a computer program, and the computer program can be executed by the processor 120 of the terminal to complete the steps of the aforementioned method. The computer-readable storage medium can be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface storage, optical disk, or CD-ROM.

[0101] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the devices or units can be electrical, mechanical or other forms.

[0102] The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units; some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0103] In addition, all functional units in the embodiments of the present application may be integrated into one processing module, or each unit may be separately configured as a unit, or two or more units may be integrated into one unit; the above-mentioned integrated units may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0104] A person skilled in the art can understand that: all or part of the steps of implementing the above method embodiment can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above method embodiment; and the aforementioned storage medium includes: mobile storage devices, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), disks or optical disks, etc. Various media that can store program codes.

[0105] It should be noted that the technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

[0106] It should be noted that the term "and / or" in the embodiments of the present application is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the term "at least one" in this article represents any combination of at least two of any one or more of a plurality of. For example, including at least one of A, B, and C can represent including any one or more elements selected from the set consisting of A, B, and C.

[0107] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An auxiliary photography method, characterized in that: include: When the microscope lens is activated, a first mark is displayed on the display screen; wherein the first mark is used to mark the projection area of ​​the microscope lens on the display screen, and the center of the first mark coincides with the projection position of the optical center of the microscope lens on the display screen; determining a display area of ​​a preview window in the display screen according to a position of the first mark; wherein the preview window does not overlap with the first mark; Displaying two mutually perpendicular extension lines intersecting at the center of the first mark; wherein the two mutually perpendicular extension lines are respectively parallel to the length direction and the width direction of the display screen; Wherein, the method further comprises: Displaying a second mark; the second mark is used to mark the projection area of ​​the focus area on the display screen; Based on the first mark and the second mark, guidance information is output; wherein the guidance information is used to instruct the user's mobile terminal device to frame through an indication arrow and / or voice broadcast.

2. The method according to claim 1, characterized in that The first mark includes a cross mark or a circular mark.

3. The method according to claim 1, characterized in that: The step of displaying a first mark on a display screen comprises: When the setting function is activated, the first mark is displayed on the display screen; wherein, The setting function represents a function for positioning the microscope lens when the microscope lens is photographing.

4. An auxiliary photographing device, characterized in that: include: A display unit, configured to display a first mark on a display screen when the microlens is activated; wherein the first mark is used to mark a projection area of ​​the microlens on the display screen, and the center of the first mark coincides with a projection position of the optical center of the microlens on the display screen; display two mutually perpendicular extension lines intersecting at the center of the first mark; wherein the two mutually perpendicular extension lines are respectively parallel to a length direction and a width direction of the display screen; and display a second mark; wherein the second mark is used to mark a projection area of ​​a focus area on the display screen; a determining unit, configured to determine a display area of ​​the preview window in the display screen according to a position of the first mark; the preview window does not overlap with the first mark; An output unit is used to output guidance information based on the first mark and the second mark; wherein the guidance information is used to instruct the user's mobile terminal device to frame through an indication arrow and / or voice broadcast.

5. A terminal device, characterized in that: include: A processor and a memory for storing a computer program that can be run on the processor, wherein the processor executes the steps of the auxiliary photography method according to any one of claims 1 to 3 when running the computer program.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the auxiliary photography method according to any one of claims 1 to 3 are implemented.

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