CN108124099A - A kind of method, mobile terminal and the storage medium of the generation of camera thumbnail - Google Patents
A kind of method, mobile terminal and the storage medium of the generation of camera thumbnail Download PDFInfo
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- CN108124099A CN108124099A CN201711341670.XA CN201711341670A CN108124099A CN 108124099 A CN108124099 A CN 108124099A CN 201711341670 A CN201711341670 A CN 201711341670A CN 108124099 A CN108124099 A CN 108124099A
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000012545 processing Methods 0.000 claims abstract description 22
- 238000005070 sampling Methods 0.000 claims abstract description 14
- 230000003993 interaction Effects 0.000 abstract description 5
- 238000004891 communication Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
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- 238000006243 chemical reaction Methods 0.000 description 1
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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
- H04N23/10—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths
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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
- H04N23/62—Control of parameters via user interfaces
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Abstract
The invention discloses method, mobile terminal and the storage mediums of a kind of generation of camera thumbnail.The described method includes：Shutter instruction is obtained, camera application program begins listening for preview data, and caches and form queue；After the camera application program, which receives, takes pictures frame information, cease listening for；Queue is searched, determines preview data corresponding with frame of taking pictures；Sampling processing generation thumbnail is carried out according to preview data.The present invention is by way of matching frame number, the preview data in the same frame source of data of choosing and take pictures, thumbnail is generated by target data of preview data, both realized and quickly generated thumbnail during taking pictures, in turn ensure that thumbnail is consistent with result figure content of taking pictures, the interaction taken pictures with user is accelerated, reduces the stand-by period of thumbnail generation, facilitates user.
Description
Technical field
The present invention relates to camera technology field more particularly to a kind of method of camera thumbnail generation, mobile terminal and deposit
Storage media.
Background technology
With the popularization of mobile terminal, the use of camera applications on mobile terminals is remembered especially with camera function
Record actual life becomes more and more extensive.In the prior art, in camera applications, after a photo has been shot, one is had
A specific region is used to show thumbnail.The content of this hypertonic sketch map is consistent with the content of current photo, and user can root
According to the situation that the understanding of this hypertonic sketch map is currently taken pictures, the interaction between camera applications and user is realized.But existing thumbnail
Generating mode be the smaller size of photo generated based on target picture, i.e., after only photo is taken, ability
Get thumbnail.So, user is needed from the final display for pressing shutter to wait thumbnail by entire stream of taking pictures
Journey, in addition the thumbnail code in later stage and photo size become larger so that the time for generating thumbnail also lengthens therewith.
Therefore, the prior art needs to be improved and developed.
The content of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of the prior art, provides a kind of camera thumbnail
Method, mobile terminal and the storage medium of generation, it is intended to by way of matching frame number, the same frame source of data of choosing and take pictures
Preview data, using preview data as target data generate thumbnail, not only realized take pictures during quickly generate thumbnail, but also
Ensure that the thumbnail so generated is consistent with result figure content of taking pictures, so as to accelerate take pictures during interaction with user,
Reduce the stand-by period of user's thumbnail generation, facilitate user.
The technical proposal for solving the technical problem of the invention is as follows：
A kind of method of camera thumbnail generation, wherein, the method for the camera thumbnail generation includes：
Shutter instruction is obtained, camera application program begins listening for preview data, and caches and form queue；
After the camera application program, which receives, takes pictures frame information, cease listening for；
Queue is searched, determines preview data corresponding with frame of taking pictures；
Sampling processing generation thumbnail is carried out according to preview data.
The method of the camera thumbnail generation, wherein, the acquisition shutter instruction, upon depression of the shutter, application program
Preview data is begun listening for, and caching forms queue and specifically includes following steps：
Shutter instruction is obtained, preview size is read, and queue is created according to preview size；
Upon depression of the shutter, camera application program begins listening for preview data；
Preview data is cached according to the data format of preview frame number and preview frame data key values pair to the queue.
The method of the camera thumbnail generation, wherein, it is described when the camera application program receives frame information of taking pictures
Afterwards, cease listening for specifically including following steps：
When receiving photographing instruction, data of most preferably taking pictures are chosen, and corresponding frame information of taking pictures is sent to the camera and is answered
Use program；
Judge the camera application program is taken pictures frame information described in whether being received in preset time；
After the camera application program, which receives, takes pictures frame information, cease listening for.
The method of the camera thumbnail generation, wherein, the lookup queue determines preview data corresponding with frame of taking pictures
Specifically include following steps：
Read queue content；
Queue is searched, the frame of taking pictures is matched with the preview frame of the queue；
Whether frame of taking pictures described in judgement is identical with the preview frame；
If identical, preview data corresponding with preview frame in the queue is called.
The method of the camera thumbnail generation, wherein, it is described that sampling processing generation thumbnail is carried out according to preview data
Specifically include following steps：
The preview data is subjected to diminution sampling processing, obtains sampled data；
The sampled data generates thumbnail by image coding mode.
A kind of mobile terminal, wherein, including processor and the memory being connected to the processor, the memory
Be stored with the program of camera thumbnail generation, the program of camera thumbnail generation by processor execution be used to implement with
Lower step：
Shutter instruction is obtained, camera application program begins listening for preview data, and caches and form queue；
After the camera application program, which receives, takes pictures frame information, cease listening for；
Queue is searched, determines preview data corresponding with frame of taking pictures；
Sampling processing generation thumbnail is carried out according to preview data.
The mobile terminal, wherein, the program of the camera thumbnail generation is performed by the processor, is additionally operable to realize
Following steps：
Shutter instruction is obtained, preview size is read, and queue is created according to preview size；
Upon depression of the shutter, camera application program begins listening for preview data；
Preview data is cached according to the data format of preview frame number and preview frame data key values pair to the queue.
The mobile terminal, wherein, the program of the camera thumbnail generation is performed by the processor, is additionally operable to realize
Following steps：
When receiving photographing instruction, data of most preferably taking pictures are chosen, and corresponding frame information of taking pictures is sent to the camera and is answered
Use program；
Judge the camera application program is taken pictures frame information described in whether being received in preset time；
After the camera application program, which receives, takes pictures frame information, cease listening for.
The mobile terminal, wherein, the program of the camera thumbnail generation is performed by the processor, is additionally operable to realize
Following steps：
Read queue content；
Queue is searched, the frame of taking pictures is matched with the preview frame of the queue；
Whether frame of taking pictures described in judgement is identical with the preview frame；
If identical, preview data corresponding with preview frame in the queue is called.
A kind of storage medium, wherein, the storage medium is stored with the program of camera thumbnail generation, the camera breviary
The program of figure generation is executed by processor the method for being used to implement the camera thumbnail generation.
The invention discloses method, mobile terminal and the storage mediums of a kind of generation of camera thumbnail.The described method includes：
Shutter instruction is obtained, camera application program begins listening for preview data, and caches and form queue；When the camera application program connects
After receiving frame information of taking pictures, cease listening for；Queue is searched, determines preview data corresponding with frame of taking pictures；According to preview data into
Row sampling processing generates thumbnail.The present invention is by way of matching frame number, the preview in the same frame source of data of choosing and take pictures
Data generate thumbnail by target data of preview data, have both realized and have quickly generated thumbnail during taking pictures, and had in turn ensured
Thumbnail is consistent with result figure content of taking pictures, and accelerates the interaction taken pictures with user, reduces the stand-by period of thumbnail generation,
Facilitate user.
Description of the drawings
Fig. 1 is the flow chart of the preferred embodiment of the method for camera thumbnail generation of the present invention.
Fig. 2 is mobile terminal preferred embodiment functional schematic block diagram of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, clear and definite, develop simultaneously embodiment pair referring to the drawings
The present invention is further described.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and do not have to
It is of the invention in limiting.
In order to be better understood from the present invention, the term of the present invention is described in detail.
Frame refers to the single width image frame of least unit in image animation.One frame is exactly a secondary static picture, even
Continuous frame just forms animation, such as video image.Frame number refers to the frame number of the picture transmitted in 1 seconds, it is understood that
It can refresh several times each second for graphics processor, usually use FPS（Frames Per Second）It represents.Each frame is all quiet
Image only in extremely rapid succession shows that frame just forms the illusion of movement.High frame per second can obtain more smooth, more true to nature move
It draws.The more, shown action will be more smooth for frame number each second (fps).Frame includes three frame head, data and postamble portions
Point.
YUV is a kind of colour coding method（Belong to PAL）, it is the color that PAL and SECAM simulation colors television system uses
Space.Capture is carried out using three pipe colour cameras or colored CCD video camera, then the colour picture signal warp point of acquirement
Color obtains RGB after amplification correction respectively, and luminance signal Y and two colour difference signal B-Y are obtained using matrixer（I.e.
U）, R-Y（That is V）, three signals of brightness and aberration encode, are sent with same channel by last transmitting terminal respectively, this
The method for expressing of kind color is exactly that so-called YUV color spaces represent.Yuv format has very much, uses in the present embodiment
YUV420 forms.
In order to be better understood from the present invention, it is illustrated below with specific embodiment.
Embodiment one
The present invention provides a kind of methods of camera thumbnail generation.Referring to Fig. 1, Fig. 1 is camera thumbnail generation of the present invention
Method preferred embodiment flow chart.As shown in Figure 1, a kind of method of camera thumbnail generation, comprises the following steps：
Step S10 obtains shutter instruction, and camera application program begins listening for preview data, and caches and form queue.
In embodiments of the present invention, when user presses shutter, camera obtains shutter instruction, reads preview size, at this point,
Camera application program can be solid for creating one according to the size of current preview and one memory headroom of format assignment of preview data
The round-robin queue of measured length.Just because of different hardware corresponds to different performances, in addition queue length can not also determine, therefore
Be conducive to manage and reduce the waste of memory headroom using the round-robin queue of regular length, improve memory space utilization rate.It is described
Round-robin queue's storage is the preview frame data with frame identification.
Further, start to start preview oracle listener, monitor preview data, the preview data that can be monitored is YUV420
Form, size are that the wide of preview image is multiplied by high 1.5 times.The preview data is by continuously several frame preview image groups
Into picture, each frame preview image has a frame ID number to correspond to therewith, and each frame ID number is unique, identifies identity,
Convenient for mark, such as 01030809ox.
Further, by preview data with frame number（Frame ID number）Institute is stored in the data format of preview frame data key values pair
State round-robin queue, that is to say, that a frame ID number corresponds to a preview frame data.Once obtain frame number（Frame ID number）, also just obtain
Corresponding preview frame data were obtained, are so conducive to the quick calling of data, accelerates to search speed, reduces the time of lookup.
Further, when receiving thumbnail generation instruction, round-robin queue's content is emptied, discharges memory space,
Memory reusability is so not only improved, also further saves memory headroom.
Step S20 after the camera application program, which receives, takes pictures frame information, is ceased listening for.
In embodiments of the present invention, when receiving photographing instruction, the corresponding optimal number of taking pictures of current time is begun look for
According to, while frame number communication mechanism is created immediately, the communication channel with camera application program is established, for detecting frame state（Send out
Send frame and receiving frame）.
Further, the optimal data of taking pictures constantly are chosen during taking pictures, serve as result frame data, not
It is to complete the data data as a result of taking pictures after entirely taking pictures, so reduces the stand-by period of result data generation.It meanwhile will
Corresponding frame information of taking pictures（The corresponding frame of taking pictures of data of most preferably taking pictures）The camera application program is sent to, and labeled as hair
Send frame.At this point, starting timer, control, which calculates, sends the duration that frame is converted into receiving frame.The camera application program receives
The frame information of taking pictures, labeled as receiving frame.When the duration is less than or equal to preset time threshold, then show the frame letter of taking pictures
It ceases for effective frame information, acquisition is taken pictures the prompting that frame information has been received by the application program.Certainly, if the duration is more than in advance
If during time threshold, then the frame information of taking pictures is not timely received, show that camera is closed or damages or other abnormal conditions.
The preset time threshold is take pictures cycle time of action, such as 10s, this is determined according to distinct device performance.Certainly, it is described
Preset time threshold is no more than current duration of entirely taking pictures.
Further, after the camera application program, which receives, takes pictures frame information, cease listening for.
Step S30 searches queue, determines preview data corresponding with frame of taking pictures.
In embodiments of the present invention, round-robin queue's content is read, calls the frame number of the round-robin queue, traversal searches frame
Number, the frame that will take pictures is matched with the frame number, and whether frame of taking pictures described in judgement is identical with the frame number of the round-robin queue.
Further, when the frame of taking pictures is identical with the frame number, then the preview frame data of the round-robin queue are called,
Final preview data is formed, as the basis of generation thumbnail, content is consistent with data content of taking pictures.
Further, if there is no the frame number matching after the frame traversal of taking pictures, show camera application program just
In Flushing status, the first of the round-robin queue preview frame data are the corresponding preview data of frame of taking pictures at this time.
Certainly, the size of round-robin queue's length, which sets frame of taking pictures described in too small also result in, can not find matched institute
Frame number is stated, therefore the generation of abnormal conditions can be reduced by suitably increasing round-robin queue's length scale.
Step S40 carries out sampling processing generation thumbnail according to preview data.
In embodiments of the present invention, it is necessary to which sub-sampling is handled, because the preview data ruler before being encoded to preview data
Very little size is screen size, generally 720P or 1080P, if being used by the use of this preview data as thumbnail, has both wasted storage
Space, and increase encoding operation amount, increase duration.Therefore, the preview data is subjected to diminution sampling processing, such as with length and width
Each 1/4 scaled down, obtains sampled data, and the size of sampled data is the 1/16 of preview data size at this time, so favourable
In the code efficiency for accelerating image, thumbnail generating rate is improved.
Further, it is the RGB lattice of recognizable output by YUV420 color codings format conversion by the sampled data
Formula ultimately generates thumbnail data, and is shown in a specific region.
Further, after a hypertonic sketch map generates, the frame number communication mechanism will be closed, and monitoring will stop, so
Energy consumption can be reduced, extends usage time.The content of the round-robin queue will be cleared simultaneously, in order to which follow-up preview data is deposited
Storage improves reusability, saves consumptive material.
It should be noted that how to carry out YUV420 format samples, the prior art is disclosed, and so it will not be repeated.
It should be appreciated that the data of preview and the data taken pictures, corresponding data source is when camera exposed frame
It is same, that is to say, that the two data content source is consistent, and the preview data of same frame is consistent with data of taking pictures.
It further illustrates, the present invention, which changes traditional thumbnail, to be made with completing entirely to take pictures the photo after process
For the mode of target picture, but according to preview image and image of taking pictures with data sharing relation, by this relation by preview
Image is as target picture so that breviary map generalization processing is carried out during taking pictures, once end of taking pictures can generate
Whole thumbnail withouts waiting for data regeneration after finishing of taking pictures.
Certainly, one of ordinary skill in the art will appreciate that realizing all or part of flow in above-described embodiment method,
It is that can related hardware be instructed by the program for the method that camera thumbnail generates（Such as processor）It completes, the journey
Sequence can be stored in a computer-readable storage medium, and described program may include upon execution such as above-mentioned each method embodiment
Flow.The wherein described storage medium can be memory, magnetic disc, CD etc..
Embodiment two
The present invention also provides a kind of mobile terminal, as shown in Fig. 2, the mobile terminal of the embodiment of the present invention can be mobile phone（Or
Tablet）Smart machines are waited, wherein, the mobile terminal of the present embodiment includes processor 10 and is connected with the processor 10
Memory 20.
The memory 20 is stored with camera thumbnail generation program, and the camera thumbnail generates program by the processing
The execution of device 10 is used to implement following steps：
Shutter instruction is obtained, camera application program begins listening for preview data, and caches and form queue；
After the camera application program, which receives, takes pictures frame information, cease listening for；
Queue is searched, determines preview data corresponding with frame of taking pictures；
Sampling processing generation thumbnail is carried out according to preview data；As detailed above.
Further, the program of the camera thumbnail generation is performed by the processor 10, is additionally operable to realize following step
Suddenly：
Shutter instruction is obtained, preview size is read, and queue is created according to preview size；
Upon depression of the shutter, camera application program begins listening for preview data；
Preview data is cached according to the data format of preview frame number and preview frame data key values pair to the queue；Specifically as above
It is described.
Further, the program of the camera thumbnail generation is performed by the processor 10, is additionally operable to realize following step
Suddenly：
When receiving photographing instruction, data of most preferably taking pictures are chosen, and corresponding frame information of taking pictures is sent to the camera and is answered
Use program；
Judge the camera application program is taken pictures frame information described in whether being received in preset time；
After the camera application program, which receives, takes pictures frame information, cease listening for；As detailed above.
Further, the program of the camera thumbnail generation is performed by the processor 10, is additionally operable to realize following step
Suddenly：
Read queue content；
Queue is searched, the frame of taking pictures is matched with the preview frame of the queue；
Whether frame of taking pictures described in judgement is identical with the preview frame；
If identical, preview data corresponding with preview frame in the queue is called；As detailed above.
The processor 10 can be a central processing unit in some embodiments（Central Processing
Unit, CPU）, microprocessor or other data processing chips, for run the program code that is stored in the memory 20 or
Data are handled, such as perform camera thumbnail generation program etc..
Embodiment three
The present invention also provides a kind of storage medium, the storage medium is stored with the program of camera thumbnail generation, the camera
The program of thumbnail generation is used to implement camera thumbnail generation method when being performed by processor 10；Specific as above institute
It states.
In conclusion method, mobile terminal and storage medium the invention discloses a kind of generation of camera thumbnail.It is described
The method of camera thumbnail generation includes：Shutter instruction is obtained, camera application program begins listening for preview data, and caches and to be formed
Queue；After the camera application program, which receives, takes pictures frame information, cease listening for；Queue is searched, is determined corresponding with frame of taking pictures
Preview data；Sampling processing generation thumbnail is carried out according to preview data.The present invention by way of matching frame number, choose with
The preview data in the same frame source of data of taking pictures generates thumbnail by target data of preview data, both realizes the process of taking pictures
In quickly generate thumbnail, in turn ensure that thumbnail is consistent with result figure content of taking pictures, accelerate the interaction taken pictures with user, subtract
Lack the stand-by period of thumbnail generation, facilitate user.
It should be appreciated that the application of the present invention is not limited to the above, it for those of ordinary skills, can
To be improved or converted according to the above description, all these modifications and variations should all belong to the guarantor of appended claims of the present invention
Protect scope.
Claims (10)
- A kind of 1. method of camera thumbnail generation, which is characterized in that the method for the camera thumbnail generation includes：Shutter instruction is obtained, camera application program begins listening for preview data, and caches and form queue；After the camera application program, which receives, takes pictures frame information, cease listening for；Queue is searched, determines preview data corresponding with frame of taking pictures；Sampling processing generation thumbnail is carried out according to preview data.
- 2. according to claim 1 camera thumbnail generation method, which is characterized in that the acquisition shutter instruction, when by During lower shutter, application program begins listening for preview data, and caching forms queue and specifically includes following steps：Shutter instruction is obtained, preview size is read, and queue is created according to preview size；Upon depression of the shutter, camera application program begins listening for preview data；Preview data is cached according to the data format of preview frame number and preview frame data key values pair to the queue.
- 3. the method for camera thumbnail generation according to claim 1, which is characterized in that described to work as the camera application program After receiving frame information of taking pictures, cease listening for specifically including following steps：When receiving photographing instruction, data of most preferably taking pictures are chosen, and corresponding frame information of taking pictures is sent to the camera and is answered Use program；Judge the camera application program is taken pictures frame information described in whether being received in preset time；After the camera application program, which receives, takes pictures frame information, cease listening for.
- 4. the method for camera thumbnail generation according to claim 2, which is characterized in that the lookup queue is determined and clapped Following steps are specifically included according to the corresponding preview data of frame：Read queue content；Queue is searched, the frame of taking pictures is matched with the preview frame of the queue；Whether frame of taking pictures described in judgement is identical with the preview frame；If identical, preview data corresponding with preview frame in the queue is called.
- 5. the method for camera thumbnail generation according to claim 4, which is characterized in that described to be adopted according to preview data Sample processing generation thumbnail specifically includes following steps：The preview data is subjected to diminution sampling processing, obtains sampled data；The sampled data generates thumbnail by image coding mode.
- 6. a kind of mobile terminal, which is characterized in that described to deposit including processor and the memory being connected to the processor Reservoir is stored with the program of camera thumbnail generation, and the program of the camera thumbnail generation is performed by the processor for real Existing following steps：Shutter instruction is obtained, camera application program begins listening for preview data, and caches and form queue；After the camera application program, which receives, takes pictures frame information, cease listening for；Queue is searched, determines preview data corresponding with frame of taking pictures；Sampling processing generation thumbnail is carried out according to preview data.
- 7. mobile terminal according to claim 6, which is characterized in that the program of the camera thumbnail generation is by the processing Device performs, and is additionally operable to realize following steps：Shutter instruction is obtained, preview size is read, and queue is created according to preview size；Upon depression of the shutter, camera application program begins listening for preview data；Preview data is cached according to the data format of preview frame number and preview frame data key values pair to the queue.
- 8. mobile terminal according to claim 6, which is characterized in that the program of the camera thumbnail generation is by the processing Device performs, and is additionally operable to realize following steps：When receiving photographing instruction, data of most preferably taking pictures are chosen, and corresponding frame information of taking pictures is sent to the camera and is answered Use program；Judge the camera application program is taken pictures frame information described in whether being received in preset time；After the camera application program, which receives, takes pictures frame information, cease listening for.
- 9. mobile terminal according to claim 7, which is characterized in that the program of the camera thumbnail generation is by the processing Device performs, and is additionally operable to realize following steps：Read queue content；Queue is searched, the frame of taking pictures is matched with the preview frame of the queue；Whether frame of taking pictures described in judgement is identical with the preview frame；If identical, preview data corresponding with preview frame in the queue is called.
- 10. a kind of storage medium, which is characterized in that the storage medium is stored with the program of camera thumbnail generation, the phase The program of machine thumbnail generation is executed by processor the side for being used to implement any one of the claim 1-5 camera thumbnail generations Method.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711341670.XA CN108124099B (en) | 2017-12-14 | 2017-12-14 | Method for generating camera thumbnail, mobile terminal and storage medium |
| PCT/CN2018/120443 WO2019114724A1 (en) | 2017-12-14 | 2018-12-12 | Camera thumbnail image generating method, mobile terminal, and storage medium |
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| CN201711341670.XA CN108124099B (en) | 2017-12-14 | 2017-12-14 | Method for generating camera thumbnail, mobile terminal and storage medium |
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| WO2019114724A1 (en) * | 2017-12-14 | 2019-06-20 | 捷开通讯(深圳)有限公司 | Camera thumbnail image generating method, mobile terminal, and storage medium |
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| WO2023245385A1 (en) * | 2022-06-20 | 2023-12-28 | 北京小米移动软件有限公司 | Photographic preview method and apparatus, and storage medium |
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| Publication number | Publication date |
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| CN108124099B (en) | 2021-01-08 |
| WO2019114724A1 (en) | 2019-06-20 |
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