CN106791390B - Wide-angle self-timer real-time preview method and user terminal - Google Patents
Wide-angle self-timer real-time preview method and user terminal Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/667—Camera operation mode switching, e.g. between still and video, sport and normal or high- and low-resolution modes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/95—Computational photography systems, e.g. light-field imaging systems
- H04N23/951—Computational photography systems, e.g. light-field imaging systems by using two or more images to influence resolution, frame rate or aspect ratio
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Abstract
The invention relates to the technical field of communication, in particular to a wide-angle self-timer real-time preview method and a user terminal. The wide-angle self-timer real-time preview method comprises the following steps: receiving an instruction of a user for shooting a wide-angle self-shooting picture; acquiring an image of a current angle; pre-splicing the image of the current angle and the image of the previous angle into a wide-angle picture in real time; generating a thumbnail from the wide-angle picture; adding the thumbnail to a shooting interface; and judging whether the user sends an instruction of finishing shooting, and if not, continuously acquiring the image of the next angle. The wide-angle self-timer real-time preview method and the user terminal provided by the invention realize the real-time synthesis of a wide-angle picture in the wide-angle self-timer process and the real-time display on the shooting interface, so that the user can preview the wide-angle self-timer effect in real time in the shooting process, the operation steps of the user are reduced, and the use pleasure of the user is greatly improved.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a wide-angle self-timer real-time preview method and a user terminal.
Background
With the continuous development of science and technology and the continuous improvement of the living standard of people, intelligent user terminal equipment such as mobile phones, cameras, tablet computers and the like are more and more popularized in the life of people. Meanwhile, as chip processing technology and image recognition technology have both reached unprecedented heights, the shooting function has gradually become the basic configuration of intelligent user terminal equipment. Along with the popularization of the self-photographing function, the front camera is added to each intelligent user terminal device on the basis of the rear camera, and the use pleasure of people is increased. The wide-angle camera is a novel shooting mode which is started at present, and is used for shooting with a focal length shorter than a standard lens, a visual angle larger than the standard lens, a focal length longer than a fisheye lens and a visual angle smaller than the fisheye lens. The wide-angle camera is adopted to carry out self-shooting, so that the picture content can be expanded, and the use pleasure of people is enriched. In practice, it is found that although the angle of view of a wide-angle camera is larger than that of a common camera, the angle of view of a general wide-angle camera is fixed, when a wide-angle camera with a fixed angle of view is used for shooting, sometimes a picture is not taken as an effect desired by a user, and the price of the wide-angle camera is expensive, which causes the cost of a user terminal to increase. In order to solve the problem, the current user terminal adopts a common front-facing camera to carry out self-shooting, and in the process of adopting the common camera to carry out wide-angle self-shooting, a user obtains a plurality of pictures by rotating by taking the user as a center, and then synthesizes the obtained plurality of pictures into a wide-angle self-shooting picture. However, in the process of wide-angle self-shooting by using a common camera, a user can only preview an image shot at the current angle on a shooting interface, and after the wide-angle self-shooting process is completed, the user can view the effect of the shot wide-angle picture in an album in a centralized manner. Like this, the user can't look over the effect of wide angle auto heterodyne in real time, can not carry out timely adjustment to wide angle auto heterodyne picture, when the discovery album concentrates the poor time of wide angle picture effect of shooing, then need return to shoot the interface once more, and user operation is comparatively loaded down with trivial details, and waste time, and user experience is relatively poor. Therefore, how to let the user know the self-timer picture effect in real time in the wide-angle self-timer process, reduce the steps of repeated operation of the user, and improve the use pleasure of the user is a technical problem to be solved urgently at present.
Disclosure of Invention
The invention provides a wide-angle self-timer real-time preview method and a user terminal, which are used for solving the problem that a user cannot check the self-timer picture effect in real time in the wide-angle self-timer process, reducing the operation steps of the user and improving the use pleasure of the user.
In order to solve the above problems, the present invention provides a wide-angle self-timer real-time preview method, which comprises the following steps: receiving an instruction of a user for shooting a wide-angle self-shooting picture; acquiring an image of a current angle; pre-splicing the image of the current angle and the image of the previous angle into a wide-angle picture in real time; generating a thumbnail from the wide-angle picture; adding the thumbnail to a shooting interface; and judging whether the user sends an instruction of finishing shooting, and if not, continuously acquiring the image of the next angle.
Preferably, the step of pre-stitching the image at the current angle and the image at the previous angle into a wide-angle picture in real time further includes: and judging whether the image at the current angle and the image at the previous angle meet the preset splicing requirement, and if not, sending a prompt to the user.
Preferably, the step of generating a thumbnail from the wide-angle picture specifically includes: and reducing the wide-angle picture according to a preset proportion to generate the thumbnail.
Preferably, the step of pre-stitching the image at the current angle and the image at the previous angle into a wide-angle picture in real time further includes: and displaying the splicing line of the wide-angle picture.
Preferably, the method further includes the following steps before the pre-stitching the image at the current angle and the image at the previous angle into the wide-angle picture in real time: and detecting whether the current angle is the initial angle, if so, generating a thumbnail by the image of the current angle, and adding the thumbnail to a shooting interface.
The present invention also provides a user terminal, comprising: the input module is used for receiving an instruction input by a user; the acquisition module is used for acquiring an image of the current angle; the pre-splicing module is used for pre-splicing the image at the current angle and the image at the previous angle into a wide-angle picture in real time; the generation module is used for generating a thumbnail from the wide-angle picture; the adding module is used for adding the thumbnail to a shooting interface; and the control module is used for judging whether the user sends an instruction of finishing shooting, and if not, continuously acquiring the image of the next angle.
Preferably, the pre-splicing module comprises a judging unit, the judging unit is used for judging whether the image at the current angle and the image at the previous angle meet the preset splicing requirement, and if not, a prompt is sent to the user.
Preferably, the generation module reduces the wide-angle picture according to a preset scale to generate the thumbnail.
Preferably, the pre-splicing module comprises a splicing unit and a display unit, and the pre-splicing unit is used for pre-splicing the image at the current angle and the image at the previous angle into a wide-angle picture in real time; the display unit is used for displaying the splicing line of the wide-angle picture.
Preferably, the user terminal further includes a detection module, where the detection module is configured to detect whether the current angle is an initial angle, and if so, generate a thumbnail from an image of the current angle, and add the thumbnail to a shooting interface.
The wide-angle self-timer real-time preview method and the user terminal provided by the invention realize the real-time synthesis of a wide-angle picture in the wide-angle self-timer process and the real-time display on the shooting interface, so that the user can preview the wide-angle self-timer effect in real time in the shooting process, the operation steps of the user are reduced, and the use pleasure of the user is greatly improved.
Drawings
FIG. 1 is a flow chart of a wide-angle self-timer real-time preview method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a user terminal according to an embodiment of the present invention.
Detailed Description
The following describes in detail specific embodiments of the wide-angle self-timer real-time preview method and the user terminal according to the present invention with reference to the accompanying drawings.
The invention provides a wide-angle self-timer real-time preview method and a user terminal, wherein an attached figure 1 is a flow chart of the wide-angle self-timer real-time preview method in the specific embodiment of the invention, and an attached figure 2 is a structural schematic diagram of the user terminal in the specific embodiment of the invention. As shown in fig. 1, the wide-angle self-timer real-time preview method of the present invention includes the following steps:
step S11, receiving an instruction from a user to take a wide-angle self-timer picture. The wide-angle self-timer real-time preview method is suitable for the user terminal with the front camera, and the user terminal comprises but is not limited to a mobile phone, a tablet computer, a notebook computer, a personal digital assistant and the like. Multiple shooting modes are built in the user terminal, and the realization of each shooting mode needs to receive an operation instruction corresponding to a user. The user may input an operation instruction in multiple ways, for example, a wide-angle self-timer mode may be selected from multiple shooting modes listed in the user terminal screen, or a camera module of the user terminal may be directly switched to the wide-angle self-timer mode by using gesture operation.
In step S12, an image of the current angle is acquired. After the user terminal receives an operation instruction of a user, a front-facing camera on the user terminal shoots an image, so that a self-shot image of the current angle is obtained. In order to facilitate the user to look up and adjust, the shooting interface of the user terminal can display the image picture obtained at the current angle in real time.
And step S13, pre-splicing the image of the current angle and the image of the previous angle into a wide-angle picture in real time. In the process of wide-angle self-timer, the user terminal rotates a certain angle by taking a self-timer as a center, so as to obtain a plurality of images, and the plurality of images are combined into a wide-angle picture. In order to realize the synthesis effect for previewing the wide-angle picture in real time, the wide-angle self-timer real-time previewing method comprises the following steps: and pre-splicing the image of the current angle and the image of the previous angle into a wide-angle picture in real time. The user is carrying out the in-process of wide angle auto heterodyne, user terminal can acquire the image information of current angle in real time to the image data information of the current angle that will acquire is saved in the inside buffer memory of user terminal, along with the going on of shooing, the image data information that the current angle acquireed and the image data information that the angle acquireed were saved in the inside buffer memory of user terminal, will a plurality of image data information of saving in the buffer memory are rendered simultaneously, and a plurality of images after will rendering are spliced in advance, generate the wide angle picture. The pre-spliced wide-angle picture is not stored, but is continuously updated along with shooting. The method for synthesizing the wide-angle picture may be a method known to those skilled in the art, and the present invention is not limited thereto.
In order to prevent the final generated wide-angle self-portrait picture from being poor in effect due to the fact that the user rotation angle is too large, preferably, the step of pre-stitching the image at the current angle and the image at the previous angle into the wide-angle picture in real time further includes: and judging whether the image at the current angle and the image at the previous angle meet the preset splicing requirement, and if not, sending a prompt to the user. Wherein the preset splicing requirements include but are not limited to: whether an overlapping area exists between the image of the current angle and the image of the previous angle and whether the area occupied by the overlapping area in the image reaches a preset value. For whether the overlapped area exists, a characteristic point detection method can be adopted to judge according to the matching number of the characteristic points of the image at the current angle and the image at the previous angle. The area of the overlapping region is the area ratio of the overlapping part on the image of the current angle in the whole image. Generally, the preset value is 30% to 50%. This is because, if there is no overlapping area between the front and rear images, the effect of the wide-angle picture generated by stitching is poor, and even the stitching cannot be completed when it is serious, and a blank area is formed on the finally generated wide-angle self-portrait picture. Therefore, the user is prevented from being aware of the problem after the shooting operation is finished by sending the prompt to the user, the self-shooting effect can be timely adjusted, and repeated operation steps of the user are reduced.
In order to facilitate the user to adjust the shooting angle, so as to obtain a wide-angle self-portrait picture with better quality, preferably, the step of pre-stitching the image at the current angle and the image at the previous angle into the wide-angle picture in real time further includes: and displaying the splicing line of the wide-angle picture. The splicing line can be displayed in a dotted line, a solid line and the like, and the color of the splicing line can be a relatively prominent color such as white, bright yellow and the like, so that the user can conveniently view the color.
And step S14, generating a thumbnail by the wide-angle picture. The wide-angle picture is in the form of a thumbnail so as not to affect the normal photographing operation of the user. The thumbnail may be generated from the pre-stitched generated wide-angle picture in a variety of ways by those skilled in the art. In order to facilitate a user to know the overall effect of the wide-angle self-portrait picture in real time, preferably, the step of generating the thumbnail by the wide-angle picture specifically includes: and reducing the wide-angle picture according to a preset proportion to generate the thumbnail.
Step S15, add the thumbnail to the shooting interface. And after the thumbnails are synthesized, displaying the thumbnails on a shooting interface. In order not to affect the normal shooting of the user, the thumbnail can be set to be placed at the corner of the shooting interface.
And step S16, judging whether the user sends out the command of finishing shooting, if not, continuing to acquire the image of the next angle. If the user does not send an instruction of finishing shooting, the front-facing camera of the user terminal continuously acquires the image of the next angle, continuously stores the acquired image data of the next angle in a cache inside the user terminal, simultaneously renders the image data of the previous angle, the current angle and the next angle in the cache, pre-splices the rendered images, generates a wide-angle image again, and displays a thumbnail generated by the wide-angle image on a shooting interface. The method is circulated, the thumbnail displayed on the shooting interface is updated in real time as new wide-angle pictures are continuously generated by pre-splicing, and the user can preview the synthesis effect of the wide-angle self-shooting pictures in real time until receiving an instruction of finishing shooting by the user.
When a user initially shoots, an image at a current angle is an initial image, and there is no image at a previous angle, and in order to prevent a stitching error, it is preferable that the method further includes the following steps before the image at the current angle and the image at the previous angle are pre-stitched into a wide-angle picture in real time: and detecting whether the current angle is the initial angle, if so, generating a thumbnail by the image of the current angle, and adding the thumbnail to a shooting interface.
The wide-angle self-timer real-time preview method provided by the invention realizes the real-time synthesis of a wide-angle picture in the wide-angle self-timer process and the real-time synthesis of the wide-angle picture in a shooting interface, so that a user can preview the wide-angle self-timer effect in real time in the shooting process, the operation steps of the user are reduced, and the use pleasure of the user is greatly improved.
Furthermore, the present invention also provides a user terminal, as shown in fig. 2, where the user terminal includes: an input module 21, an acquisition module 22, a pre-stitching module 24, a generation module 25, an addition module 26 and a control module 27.
The input module 21 is configured to receive an instruction input by a user. The wide-angle self-timer real-time preview method is suitable for the user terminal with the front camera, and the user terminal comprises but is not limited to a mobile phone, a tablet computer, a notebook computer, a personal digital assistant and the like. Multiple shooting modes are built in the user terminal, and the realization of each shooting mode needs to receive an operation instruction corresponding to a user. The user may input an operation instruction in multiple ways, for example, the input module 21 may present multiple shooting modes to the user, the user may select a wide-angle self-timer mode from the multiple shooting modes listed in the user terminal screen, or the input module 21 is a gesture sensor, and the user may directly switch the camera module of the user terminal to the wide-angle self-timer mode by using gesture operation.
The obtaining module 22 is configured to obtain an image of a current angle. After the user terminal receives an operation instruction of a user, the self-timer image of the current angle is acquired by the acquisition module 22 on the user terminal. In order to facilitate the user to look up and adjust, the shooting interface of the user terminal can display the image picture obtained at the current angle in real time.
The pre-stitching module 24 is configured to pre-stitch the image at the current angle and the image at the previous angle into a wide-angle picture in real time. In the process of wide-angle self-timer, the user terminal rotates a certain angle by taking a self-timer as a center, so as to obtain a plurality of images, and the plurality of images are combined into a wide-angle picture. In order to implement the effect of previewing the synthesis of the wide-angle picture in real time, the user terminal of the present invention further comprises a pre-stitching module 24, wherein the pre-stitching module 24 is configured to pre-stitch the image at the current angle and the image at the previous angle into the wide-angle picture in real time. The user is carrying out the in-process of wide angle auto heterodyne, user terminal can acquire the image information of current angle in real time to the image data information of the current angle that will acquire is saved in the inside buffer memory of user terminal, along with the going on of shooing, the image data information that the current angle acquireed and the image data information that the angle acquireed were saved in the inside buffer memory of user terminal, will a plurality of image data information of saving in the buffer memory are rendered simultaneously, and a plurality of images after will rendering are spliced in advance, generate the wide angle picture. The pre-spliced wide-angle picture is not stored, but is continuously updated along with shooting. The method for synthesizing the wide-angle picture may be a method known to those skilled in the art, and the present invention is not limited thereto.
In order to prevent the final generated wide-angle self-timer picture from being poor in effect due to the fact that the rotation angle of the user is too large, it is preferable that the pre-stitching module 24 includes a judging unit 241, the judging unit 241 is used for judging whether the image at the current angle and the image at the previous angle meet a preset stitching requirement, and if not, a prompt is sent to the user. Wherein the preset splicing requirements include but are not limited to: whether an overlapping area exists between the image of the current angle and the image of the previous angle and whether the area occupied by the overlapping area in the image reaches a preset value. For whether the overlapped area exists, a characteristic point detection method can be adopted to judge according to the matching number of the characteristic points of the image at the current angle and the image at the previous angle. The area of the overlapping region is the area ratio of the overlapping part on the image of the current angle in the whole image. Generally, the preset value is 30% to 50%. This is because, if there is no overlapping area between the front and rear images, the effect of the wide-angle picture generated by stitching is poor, and even the stitching cannot be completed when it is serious, and a blank area is formed on the finally generated wide-angle self-portrait picture. Therefore, the user is prevented from being aware of the problem after the shooting operation is finished by sending the prompt to the user, the self-shooting effect can be timely adjusted, and repeated operation steps of the user are reduced.
In order to facilitate the user to adjust the shooting angle so as to obtain a wide-angle self-portrait picture with better quality, preferably, the pre-stitching module 24 includes a stitching unit 242 and a display unit 243, where the pre-stitching unit 242 is configured to pre-stitch the image at the current angle and the image at the previous angle into a wide-angle picture in real time; the display unit 243 is configured to display the stitching line of the wide-angle picture. The splicing line can be displayed in a dotted line, a solid line and the like, and the color of the splicing line can be a relatively prominent color such as white, bright yellow and the like, so that the user can conveniently view the color.
The generating module 25 is configured to generate a thumbnail from the wide-angle picture. The wide-angle picture is in the form of a thumbnail so as not to affect the normal photographing operation of the user. The thumbnail may be generated from the pre-stitched generated wide-angle picture in a variety of ways by those skilled in the art. In order to facilitate the user to know the overall effect of the wide-angle self-portrait picture in real time, preferably, the generating module 25 reduces the wide-angle picture according to a preset scale to generate the thumbnail.
The adding module 26 is configured to add the thumbnail to a shooting interface. And after the thumbnails are synthesized, displaying the thumbnails on a shooting interface. In order not to affect the normal shooting of the user, the thumbnail can be set to be placed at the corner of the shooting interface.
And the control module 27 is configured to determine whether the user sends an instruction to finish shooting, and if not, continue to acquire the image of the next angle. If the user does not send the command of finishing shooting, the obtaining module 22 of the user terminal continues to obtain the image of the next angle, and continuously stores the obtained image data of the next angle in a cache inside the user terminal, then renders the image data of the previous angle, the current angle and the next angle in the cache at the same time, pre-splices the rendered images, generates the wide-angle image again, and displays the thumbnail generated by the wide-angle image on a shooting interface. The method is circulated, the thumbnail displayed on the shooting interface is updated in real time as new wide-angle pictures are continuously generated by pre-splicing, and the user can preview the synthesis effect of the wide-angle self-shooting pictures in real time until receiving an instruction of finishing shooting by the user.
When a user initially shoots, an image at a current angle is an initial image, and there is no image at a previous angle, in order to prevent a splicing error, preferably, the user terminal further includes a detection module 23, where the detection module 23 is configured to detect whether the current angle is the initial angle, and if so, generate a thumbnail from the image at the current angle, and add the thumbnail to a shooting interface.
The wide-angle self-timer real-time preview method and the user terminal provided by the invention realize the real-time synthesis of a wide-angle picture in the wide-angle self-timer process and the real-time display on the shooting interface, so that the user can preview the wide-angle self-timer effect in real time in the shooting process, the operation steps of the user are reduced, and the use pleasure of the user is greatly improved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A wide-angle self-timer real-time preview method is characterized by comprising the following steps:
receiving an instruction of a user for shooting a wide-angle self-shooting picture;
acquiring an image of a current angle;
pre-splicing the image of the current angle and the image of the previous angle into a wide-angle picture in real time;
generating a thumbnail from the wide-angle picture;
adding the thumbnail to a shooting interface;
judging whether a user sends an instruction of finishing shooting, if not, continuously acquiring an image of a next angle, continuously storing the acquired image data of the next angle in a cache in the user terminal, simultaneously rendering the images of the previous angle, the current angle and the next angle in the cache, pre-splicing the rendered images to generate the wide-angle picture, and displaying a thumbnail generated by the wide-angle picture on a shooting interface;
the step of pre-stitching the image at the current angle and the image at the previous angle into a wide-angle picture in real time further comprises: judging whether the image at the current angle and the image at the previous angle meet the preset splicing requirement, if not, sending a prompt to a user; the preset splicing requirement comprises: whether an overlapping area exists between the image of the current angle and the image of the previous angle and whether the area occupied by the overlapping area in the image reaches a preset value.
2. The wide-angle self-timer real-time preview method of claim 1, wherein the step of generating the thumbnail from the wide-angle picture specifically comprises: and reducing the wide-angle picture according to a preset proportion to generate the thumbnail.
3. The wide-angle self-timer real-time preview method of claim 1, wherein the step of pre-stitching the image of the current angle and the image of the previous angle into a wide-angle picture in real time further comprises: and displaying the splicing line of the wide-angle picture.
4. The wide-angle self-timer real-time preview method of claim 1, wherein before pre-stitching the current-angle image and the previous-angle image into a wide-angle picture in real time, the method further comprises the following steps: and detecting whether the current angle is the initial angle, if so, generating a thumbnail by the image of the current angle, and adding the thumbnail to a shooting interface.
5. A user terminal, comprising:
the input module is used for receiving an instruction input by a user;
the acquisition module is used for acquiring an image of the current angle;
the pre-splicing module is used for pre-splicing the image at the current angle and the image at the previous angle into a wide-angle picture in real time, and further comprises a judging unit, wherein the judging unit is used for judging whether the image at the current angle and the image at the previous angle meet the preset splicing requirement or not, and if not, sending a prompt to a user; the preset splicing requirement comprises: whether an overlapping area exists between the image at the current angle and the image at the previous angle and whether the area occupied by the overlapping area in the image reaches a preset value;
the generation module is used for generating a thumbnail from the wide-angle picture;
the adding module is used for adding the thumbnail to a shooting interface;
and the control module is used for judging whether the user sends an instruction for finishing shooting, if not, continuously acquiring the image of the next angle, continuously storing the acquired image data of the next angle in a cache inside the user terminal, simultaneously rendering the images of the previous angle, the current angle and the next angle in the cache, pre-splicing a plurality of rendered images to generate the wide-angle image, wherein the pre-spliced generated wide-angle image cannot be stored, and displaying the thumbnail generated by the wide-angle image on a shooting interface.
6. The user terminal of claim 5, wherein the generating module reduces the wide-angle picture by a preset scale to generate the thumbnail.
7. The user terminal according to claim 5, wherein the pre-stitching module comprises a stitching unit and a display unit, and the pre-stitching unit is configured to pre-stitch the image at the current angle and the image at the previous angle into a wide-angle picture in real time; the display unit is used for displaying the splicing line of the wide-angle picture.
8. The user terminal according to claim 5, further comprising a detection module, wherein the detection module is configured to detect whether the current angle is an initial angle, and if so, generate a thumbnail from an image of the current angle and add the thumbnail to the shooting interface.
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| CN110300251A (en) * | 2018-03-21 | 2019-10-01 | 富泰华工业（深圳）有限公司 | Image player |
| CN112703725B (en) * | 2018-09-12 | 2022-10-04 | 富士胶片株式会社 | Synthesis processing system, synthesis processing device, and synthesis processing method |
| CN109361850B (en) * | 2018-09-28 | 2021-06-15 | Oppo广东移动通信有限公司 | Image processing method, device, terminal device and storage medium |
| CN111371988B (en) * | 2020-02-27 | 2021-08-20 | Oppo广东移动通信有限公司 | Content operation method, device, terminal and storage medium |
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