Camera image preview method, device, equipment and storage medium

Abstract

This invention relates to the field of mobile phone photography, and discloses a method, apparatus, device, and storage medium for previewing images using a camera. The method includes: acquiring the preview image resolution of the camera, and reading the camera's shooting resolution; determining whether the preview image resolution is less than the shooting resolution; if it is less than the shooting resolution, monitoring the camera's preview frame rate and determining whether the preview frame rate is less than a preset frame rate threshold; if it is less than the preset frame rate threshold, upon receiving a preview command, overlaying a correction mask image onto the camera's preview image to obtain a frame rate-corrected preview image.

Description

Technical Field

[0001] The present invention relates to the field of mobile phone photography, and in particular to a camera image preview method, device, equipment and storage medium. Background Art

[0002] For a long time, the basic technology of mobile phone cameras has been used for taking photos and recording videos. However, when encountering high resolution, the camera preview will be stuck. At this time, the camera software can only reduce the frame rate of the camera preview to ensure that the camera preview screen can be displayed normally. Otherwise, in order to ensure the smoothness of the mobile phone camera preview screen, the resolution of the preview screen can only be reduced.

[0003] There are generally two solutions to the problem of preview freezes when using extremely high resolution. One is to reduce the frame rate of the preview screen of the mobile phone camera to ensure that the preview screen can be displayed at an extremely high resolution, but the preview screen will become very stuck. The second is to reduce the resolution of the preview screen of the mobile phone camera, but in this way the camera cannot reach an extremely high resolution and photos cannot be taken with extremely high resolution.

[0004] Therefore, based on the technical problem that the image preview of the existing mobile phone camera cannot maintain smoothness while maintaining high resolution during the switching process of high-resolution shooting, a new technology is needed. Summary of the invention

[0005] The main purpose of the present invention is to solve the technical problem that the image preview of the existing mobile phone camera cannot be kept smooth while maintaining high resolution during the switching process of high-resolution shooting.

[0006] A first aspect of the present invention provides a camera image preview method, the camera image preview method comprising:

[0007] Obtain the preview image resolution of the camera, and read the shooting resolution of the camera;

[0008] Determining whether the preview image resolution is smaller than the shooting resolution;

[0009] If it is less than the shooting resolution, monitoring the preview frame number of the camera to determine whether the preview frame number is less than a preset frame number threshold;

[0010] If it is less than a preset frame number threshold, when receiving a preview instruction, the preview image of the camera is covered with the correction mask image to obtain a preview image with corrected frame number.

[0011] Optionally, in a first implementation of the first aspect of the present invention, when receiving the preview instruction, after overwriting the preview image of the camera with the correction mask image to obtain the preview image with the corrected frame number, the method further includes:

[0012] When receiving a shooting instruction, the corrected mask image is recycled to the background system.

[0013] Optionally, in a second implementation of the first aspect of the present invention, reading the shooting resolution of the camera includes:

[0014] accessing capture settings of said camera;

[0015] According to the preset matching character string, the corresponding key value is matched in the shooting setting to obtain the shooting resolution of the camera.

[0016] Optionally, in a third implementation of the first aspect of the present invention, overlaying the corrected mask image on the preview image of the camera to obtain a preview image with corrected frame number includes:

[0017] Covering the preview image of the camera with a corrected mask image, monitoring the preview frame number of the camera, and determining whether the preview frame number is less than a preset frame number threshold;

[0018] If it is less than a preset frame number threshold, the preview image of the camera continues to be covered with the corrected mask image until the preview frame number is not less than the preset frame number threshold.

[0019] Optionally, in a fourth implementation of the first aspect of the present invention, overlaying the corrected mask image on the preview image of the camera to obtain a preview image with corrected frame number includes:

[0020] intercepting a preview image of the camera, and setting the preview image to be semi-transparent to be determined as a corrected mask image;

[0021] The preview image of the camera is covered with the correction mask image to obtain a preview image with corrected frame number.

[0022] Optionally, in a fifth implementation of the first aspect of the present invention, intercepting the preview image of the camera and setting the preview image to be semi-transparent as the corrected mask image includes:

[0023] Intercept the preview image of the camera, and set the corresponding label of the setLabel() function based on the coordinates of the preview image;

[0024] The preview image is set to be semi-transparent and determined as a corrected mask image.

[0025] Optionally, in a sixth implementation of the first aspect of the present invention, overlaying the corrected mask image on the preview image of the camera to obtain a preview image with corrected frame number includes:

[0026] Based on the label corresponding to the setLabel() function, the corrected mask image is imported into the layout defined by setLayoutRes() to obtain a preview image covered by the corrected mask image.

[0027] A second aspect of the present invention provides an image preview device for a camera, the image preview device for a camera comprising:

[0028] An acquisition module, used to acquire the preview image resolution of the camera and read the shooting resolution of the camera;

[0029] A resolution determination module, used to determine whether the preview image resolution is smaller than the shooting resolution;

[0030] A frame number determination module, for monitoring the preview frame number of the camera if the preview frame number is less than the shooting resolution, and determining whether the preview frame number is less than a preset frame number threshold;

[0031] The covering module is used to cover the preview image of the camera with the corrected mask image when receiving a preview instruction if the frame number is less than a preset frame number threshold, so as to obtain a preview image with corrected frame number.

[0032] A third aspect of the present invention provides an image preview device for a camera, comprising: a memory and at least one processor, wherein instructions are stored in the memory, and the memory and the at least one processor are interconnected via a line; the at least one processor calls the instructions in the memory so that the image preview device for the camera executes the above-mentioned image preview method for the camera.

[0033] A fourth aspect of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores instructions, which, when executed on a computer, enable the computer to execute the above-mentioned camera image preview method.

[0034] In the embodiment of the present invention, a solution of separating the camera preview screen and the photo screen by software is used to ensure that the preview screen of the camera at an extremely high resolution will not drop frames and cause the preview screen to be not smooth enough, and there is no need to reduce the photo resolution so as to not be able to take photos with extremely high resolution, and at the same time, the manpower and material resources spent on hardware testing are saved. This solution solves the technical problem that the image preview of the existing mobile phone camera cannot maintain smoothness while maintaining high resolution during the switching process of high-resolution shooting. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1A schematic diagram of an embodiment of an image preview method for a camera in an embodiment of the present invention;

[0036] Figure 2 A schematic diagram of an embodiment of an image preview device for a camera in an embodiment of the present invention;

[0037] Figure 3 It is a schematic diagram of another embodiment of the image preview device of the camera in the embodiment of the present invention;

[0038] Figure 4 Schematic diagram of an embodiment of an image preview device for a camera in an embodiment of the present invention. DETAILED DESCRIPTION

[0039] The embodiments of the present invention provide a camera image preview method, device, equipment and storage medium.

[0040] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" or "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0041] For ease of understanding, the specific process of the embodiment of the present invention is described below. Figure 1 , an embodiment of the image preview method of the camera in the embodiment of the present invention includes:

[0042] 101. Obtaining a preview image resolution of a camera, and reading a shooting resolution of the camera;

[0043] In this embodiment, the resolution of the preview image of the mobile phone camera can be directly obtained within the mobile phone software, and then the shooting resolution data set in the camera can be read. After obtaining all the resolutions of the camera, the resolution ratios will be classified, and finally these resolutions will be arranged in order of size. When the camera uses a high resolution, if the software finds that the frame rate has dropped, it will use a lower resolution with the same ratio to replace it, and then switch back when taking a photo. This is equivalent to covering the extremely high resolution with a layer of mask with the same ratio to ensure that the picture will not freeze when it is previewed, and then removing that layer of mask when taking a photo.

[0044] Furthermore, “reading the shooting resolution of the camera” can perform the following steps:

[0045] 1011. Access the shooting settings of the camera;

[0046] 1012. According to a preset matching string, a corresponding key value is matched in the shooting setting to obtain a shooting resolution of the camera.

[0047] In steps 1011-1012, the camera's shooting setting list is accessed, the shooting setting characters are accurately matched through the string of "shooting resolution", and then the shooting resolution value corresponding to the "shooting resolution" character is extracted based on the key-value setting.

[0048] 102. Determine whether the preview image resolution is smaller than the shooting resolution;

[0049] In this embodiment, the preview image frame drop mainly occurs when the shooting resolution is too high and the preview image resolution is not high, and the frame drop is caused during the switching process. It is determined whether the preview image resolution is smaller than the shooting resolution. If it is smaller, the preview image frame supplement requirement is met.

[0050] 103. If the resolution is less than the shooting resolution, monitoring the preview frame number of the camera to determine whether the preview frame number is less than a preset frame number threshold;

[0051] 104. If the frame number is less than a preset frame number threshold, when receiving a preview instruction, the preview image of the camera is covered with a correction mask image to obtain a preview image with corrected frame number.

[0052] In steps 103-104, the number of frames of the preview image is monitored. For example, if the number of frames is 40 and the frame number threshold is 25, the preview frame number 40 is greater than the frame number threshold 25. If the number of frames of the preview image is 15, the preview image frame number 15 is less than the frame number threshold 25. At this time, as long as the preview interface is triggered, the preview avatar compensation process will be entered.

[0053] When a preview instruction is received, the mask image is used to cover the original preview image, thereby increasing the display frame rate of the original preview image and raising the frame rate of the preview image.

[0054] Furthermore, “covering the preview image of the camera with the corrected mask image to obtain a preview image with corrected frame number” may perform the following steps:

[0055] 1041. Cover the preview image of the camera with a corrected mask image, monitor the preview frame number of the camera, and determine whether the preview frame number is less than a preset frame number threshold;

[0056] 1042. If the frame number is less than a preset frame number threshold, continue to cover the preview image of the camera with the corrected mask image until the preview frame number is not less than the preset frame number threshold.

[0057] In steps 1041-1042, the mask covering can be processed by multiple coverings, firstly, the preview frame number image is covered with a mask, and then it is determined whether the preview image after the mask covering makes the preview image frame number not less than the frame number threshold. If it is less than the frame number threshold, the mask image covering is continued.

[0058] Furthermore, “covering the preview image of the camera with the corrected mask image to obtain a preview image with corrected frame number” may perform the following steps:

[0059] 1043. intercepting a preview image of the camera, and setting the preview image to be semi-transparent as a corrected mask image;

[0060] 1044. Cover the preview image of the camera with the correction mask image to obtain a preview image with corrected frame number.

[0061] In steps 1043-1044, the transparency of the preview image can be adjusted during the overlay process, and after being adjusted to semi-transparent, the data is transferred to the mask image. The mask image is confirmed as the corrected mask image, and then the preview image is overlaid based on the corrected mask image to solve the problem of the number of frames of the preview image.

[0062] Further, 1043 can perform the following steps:

[0063] 10431. Intercept the preview image of the camera, and set a corresponding label of the setLabel() function based on the coordinates of the preview image;

[0064] 10432. Set the preview image to be semi-transparent and determine it as a corrected mask image.

[0065] In steps 10431-10432, you can define the coverage area, use the preview image as the coverage area, and pass the boundary area of ​​the preview image into the corresponding label of the setLabel() function. Specifically, you can execute:

[0066] LabelValue LabelValueClassObject=LabelValue.setLabel(X label)

[0067] Return Value: This method returns another LabelValueClassObject having the Label passed as a parameter as an element and the value of the previous LabelValueClassObject.

[0068] After setting the area as the preview image and setting the image transparency of the preview image to be semi-transparent, the semi-transparent preview image is determined as the correction mask image.

[0069] Further, 1044 can perform the following steps:

[0070] 10441. Based on the label corresponding to the setLabel() function, import the corrected mask image into the layout defined by setLayoutRes() to obtain a preview image covered by the corrected mask image.

[0071] In the embodiment of the present invention, the label corresponding to the setLabel() function can be injected into match_parent, and then the layout is defined using the setLayoutRes() function to cover the preview image with the corrected mask image. The implementation method can be as follows:

[0072] ayoutParams guideViewParams=new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,ViewGroup.LayoutParams.WRAP_CONTENT); #Inject match_paren object

[0073] if (direction!= null) {

[0074] int width = this.getWidth(match_parent); #Width is defined as the data of match_parent

[0075] int height = this.getHeight(match_parent); #The length is defined as the data of match_parent.

[0076] Furthermore, the following steps may be performed after step 104:

[0077] 105. When receiving a shooting instruction, the corrected mask image is recycled to a background system.

[0078] In this embodiment, the present invention uses a preview and photo separation technology. When the software is opened and the camera is previewed, the software will automatically start to obtain all resolutions that the camera can support, and classify these resolutions according to the ratio, and then sort them according to the size of the resolution. After that, a layer of mask will be automatically generated when the camera is previewing, but the frame rate at this time has not been reduced to the frame rate of the jam, so this layer of mask is in a hidden state. When the camera switches the resolution to an extremely high resolution, the frame rate will begin to decrease. When it drops to a certain value, the mask will cover the original resolution picture, and a lower resolution of the same ratio will be used on the mask to keep the picture smooth. When you click to take a photo, the mask will move to the background and use the original resolution to take a photo. After completion, the mask will be turned on.

[0079] In the embodiment of the present invention, a solution of separating the camera preview screen and the photo screen by software is used to ensure that the preview screen of the camera at an extremely high resolution will not drop frames and cause the preview screen to be not smooth enough, and there is no need to reduce the photo resolution so as to not be able to take photos with extremely high resolution, and at the same time, the manpower and material resources spent on hardware testing are saved. This solution solves the technical problem that the image preview of the existing mobile phone camera cannot maintain smoothness while maintaining high resolution during the switching process of high-resolution shooting.

[0080] The above describes the image preview method of the camera in the embodiment of the present invention. The following describes the image preview device of the camera in the embodiment of the present invention. Figure 2 In one embodiment of the image preview device of a camera in the embodiment of the present invention, the image preview device of the camera comprises:

[0081] The acquisition module 201 is used to acquire the preview image resolution of the camera and read the shooting resolution of the camera;

[0082] A resolution determination module 202, used to determine whether the preview image resolution is smaller than the shooting resolution;

[0083] The frame number determination module 203 is used to monitor the preview frame number of the camera if it is less than the shooting resolution, and determine whether the preview frame number is less than a preset frame number threshold;

[0084] The covering module 204 is used to cover the preview image of the camera with the correction mask image when receiving the preview instruction if the frame number is less than a preset frame number threshold, so as to obtain a preview image with corrected frame number.

[0085] In the embodiment of the present invention, a solution of separating the camera preview screen and the photo screen by software is used to ensure that the preview screen of the camera at an extremely high resolution will not drop frames and cause the preview screen to be not smooth enough, and there is no need to reduce the photo resolution so as to not be able to take photos with extremely high resolution, and at the same time, the manpower and material resources spent on hardware testing are saved. This solution solves the technical problem that the image preview of the existing mobile phone camera cannot maintain smoothness while maintaining high resolution during the switching process of high-resolution shooting.

[0086] See also Figure 3 , another embodiment of the image preview device of a camera in the embodiment of the present invention, the image preview device of the camera comprises:

[0087] The acquisition module 201 is used to acquire the preview image resolution of the camera and read the shooting resolution of the camera;

[0088] A resolution determination module 202, used to determine whether the preview image resolution is smaller than the shooting resolution;

[0089] The frame number determination module 203 is used to monitor the preview frame number of the camera if it is less than the shooting resolution, and determine whether the preview frame number is less than a preset frame number threshold;

[0090] The covering module 204 is used to cover the preview image of the camera with the correction mask image when receiving the preview instruction if the frame number is less than a preset frame number threshold, so as to obtain a preview image with corrected frame number.

[0091] The image preview device of the camera further includes a recycling module 205, and the recycling module 205 is specifically used for:

[0092] When receiving a shooting instruction, the corrected mask image is recycled to the background system.

[0093] The acquisition module 201 is specifically used for:

[0094] accessing capture settings of said camera;

[0095] According to the preset matching character string, the corresponding key value is matched in the shooting setting to obtain the shooting resolution of the camera.

[0096] The covering module 204 is specifically used for:

[0097] Covering the preview image of the camera with a corrected mask image, monitoring the preview frame number of the camera, and determining whether the preview frame number is less than a preset frame number threshold;

[0098] If it is less than a preset frame number threshold, the preview image of the camera continues to be covered with the corrected mask image until the preview frame number is not less than the preset frame number threshold.

[0099] The covering module 204 is further specifically used for:

[0100] intercepting a preview image of the camera, and setting the preview image to be semi-transparent to be determined as a corrected mask image;

[0101] The preview image of the camera is covered with the correction mask image to obtain a preview image with corrected frame number.

[0102] The covering module 204 is further specifically used for:

[0103] Intercept the preview image of the camera, and set the corresponding label of the setLabel() function based on the coordinates of the preview image;

[0104] The preview image is set to be semi-transparent and determined as a corrected mask image.

[0105] The covering module 204 is further specifically used for:

[0106] Based on the label corresponding to the setLabel() function, the corrected mask image is imported into the layout defined by setLayoutRes() to obtain a preview image covered by the corrected mask image.

[0107] In the embodiment of the present invention, a solution of separating the camera preview screen and the photo screen by software is used to ensure that the preview screen of the camera at an extremely high resolution will not drop frames and cause the preview screen to be not smooth enough, and there is no need to reduce the photo resolution so as to not be able to take photos with extremely high resolution, and at the same time, the manpower and material resources spent on hardware testing are saved. This solution solves the technical problem that the image preview of the existing mobile phone camera cannot maintain smoothness while maintaining high resolution during the switching process of high-resolution shooting.

[0108] above Figure 2 and Figure 3 The image preview device of the camera in the embodiment of the present invention is described in detail from the perspective of modular functional entities. The image preview device of the camera in the embodiment of the present invention is described in detail from the perspective of hardware processing.

[0109] Figure 44 is a schematic diagram of the structure of an image preview device of a camera provided by an embodiment of the present invention. The image preview device 400 of the camera may have relatively large differences due to different configurations or performances, and may include one or more processors (central processing units, CPU) 410 (for example, one or more processors) and a memory 420, and one or more storage media 430 (for example, one or more mass storage devices) storing application programs 433 or data 432. Among them, the memory 420 and the storage medium 430 may be temporary storage or permanent storage. The program stored in the storage medium 430 may include one or more modules (not shown in the figure), and each module may include a series of instruction operations in the image preview device 400 of the camera. Furthermore, the processor 410 may be configured to communicate with the storage medium 430 to execute a series of instruction operations in the storage medium 430 on the image preview device 400 of the camera.

[0110] The camera-based image preview device 400 may further include one or more power supplies 440, one or more wired or wireless network interfaces 450, one or more input and output interfaces 460, and / or one or more operating systems 431, such as Windows Server, Mac OS X, Unix, Linux, FreeBSD, etc. It will be appreciated by those skilled in the art that Figure 4 The structure of the camera image preview device shown does not constitute a limitation on the camera-based image preview device, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0111] The present invention also provides a computer-readable storage medium, which may be a non-volatile computer-readable storage medium or a volatile computer-readable storage medium. Instructions are stored in the computer-readable storage medium. When the instructions are executed on a computer, the computer executes the steps of the camera image preview method.

[0112] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described system, device, or unit can refer to the corresponding process in the aforementioned method embodiment and will not be repeated here.

[0113] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk and other media that can store program codes.

[0114] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A camera image preview method, characterized in that: Includes steps: Obtain the preview image resolution of the camera, and read the shooting resolution of the camera; Determining whether the preview image resolution is smaller than the shooting resolution; If it is less than the shooting resolution, monitoring the preview frame number of the camera to determine whether the preview frame number is less than a preset frame number threshold; If it is less than a preset frame number threshold, when receiving a preview instruction, the preview image of the camera is covered with the correction mask image to obtain a preview image with corrected frame number.

2. The camera image preview method according to claim 1, characterized in that: When receiving the preview instruction, after the preview image of the camera is covered with the correction mask image to obtain the preview image with the corrected frame number, the method further includes: When receiving a shooting instruction, the corrected mask image is recycled to the background system.

3. The camera image preview method according to claim 1, characterized in that: The reading of the shooting resolution of the camera comprises: accessing capture settings of said camera; According to the preset matching character string, the corresponding key value is matched in the shooting setting to obtain the shooting resolution of the camera.

4. The camera image preview method according to claim 1, characterized in that: The step of overlaying the corrected mask image on the preview image of the camera to obtain a preview image with corrected frame number comprises: Covering the preview image of the camera with a corrected mask image, monitoring the preview frame number of the camera, and determining whether the preview frame number is less than a preset frame number threshold; If it is less than a preset frame number threshold, the preview image of the camera continues to be covered with the corrected mask image until the preview frame number is not less than the preset frame number threshold.

5. The camera image preview method according to claim 1, characterized in that: The step of overlaying the corrected mask image on the preview image of the camera to obtain a preview image with corrected frame number comprises: intercepting a preview image of the camera, and setting the preview image to be semi-transparent to be determined as a corrected mask image; The preview image of the camera is covered with the correction mask image to obtain a preview image with corrected frame number.

6. The camera image preview method according to claim 5, characterized in that: The intercepting the preview image of the camera and setting the preview image to be semi-transparent as a corrected mask image comprises: Intercept the preview image of the camera, and set the corresponding label of the setLabel() function based on the coordinates of the preview image; The preview image is set to be semi-transparent and determined as a corrected mask image.

7. The camera image preview method according to claim 6, characterized in that: The step of overlaying the corrected mask image on the preview image of the camera to obtain a preview image with corrected frame number comprises: Based on the label corresponding to the setLabel() function, the corrected mask image is imported into the layout defined by setLayoutRes() to obtain a preview image covered by the corrected mask image.

8. An image preview device for a camera, characterized in that: The image preview device of the camera comprises: An acquisition module, used to acquire the preview image resolution of the camera and read the shooting resolution of the camera; A resolution determination module, used to determine whether the preview image resolution is smaller than the shooting resolution; A frame number determination module, for monitoring the preview frame number of the camera if the preview frame number is less than the shooting resolution, and determining whether the preview frame number is less than a preset frame number threshold; The covering module is used to cover the preview image of the camera with the corrected mask image when receiving a preview instruction if the frame number is less than a preset frame number threshold, so as to obtain a preview image with corrected frame number.

9. An image preview device for a camera, characterized in that: The image preview device of the camera comprises: a memory and at least one processor, the memory stores instructions, and the memory and the at least one processor are interconnected via a line; The at least one processor calls the instructions in the memory to enable the image preview device of the camera to execute the image preview method of the camera according to any one of claims 1-7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the image preview method for a camera according to any one of claims 1 to 7 is implemented.

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