CN108495144A - A method of obtaining picture - Google Patents

A method of obtaining picture Download PDF

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Publication number
CN108495144A
CN108495144A CN201810279650.2A CN201810279650A CN108495144A CN 108495144 A CN108495144 A CN 108495144A CN 201810279650 A CN201810279650 A CN 201810279650A CN 108495144 A CN108495144 A CN 108495144A
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China
Prior art keywords
picture
crucial
user
group
original
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CN201810279650.2A
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Chinese (zh)
Inventor
朱磊
李建英
韩琦
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Harbin Yishe Technology Co Ltd
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Harbin Yishe Technology Co Ltd
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Priority to CN201810279650.2A priority Critical patent/CN108495144A/en
Publication of CN108495144A publication Critical patent/CN108495144A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • H04N21/234345—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements the reformatting operation being performed only on part of the stream, e.g. a region of the image or a time segment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/44008—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
    • H04N21/440263—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by altering the spatial resolution, e.g. for displaying on a connected PDA

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Studio Circuits (AREA)
  • Studio Devices (AREA)

Abstract

A kind of method obtaining picture of the present invention belongs to field of video processing；Panoramic video stream and the original crucial figure group of part multichannel are obtained including server；The multichannel original crucial original key of figure group panoramic mosaic generating portion in part is schemed and is stored by server；The original crucial figure in part is correspondingly arranged by server with pre-set image frame, and the frame parameter of pre-set image frame is sent to user's playback equipment；User's playback equipment receives the frame parameter of pre-set image frame；User sends photographing instruction, and playback equipment judges whether current image frame is pre-set image frame according to the frame parameter in photographing instruction, and parameter in instruction is transmitted to server by playback equipment while sectional drawing；User can in local photograph album preview response photographing instruction picture, user send check that full picture is instructed to server；Server obtains that corresponding original crucial figure according to frame parameter, intercepts corresponding picture；Server sends picture to user, and the full picture that user terminal receives is corresponding with preview picture indifference.

Description

A method of obtaining picture
Technical field
A kind of method obtaining picture of the present invention belongs to field of video processing.
Background technology
After generally having taken photo, terminal can not only preserve the picture data that shooting obtains, and can also reduce above-mentioned photo After preserved, when Album for glancing over pictures follow-up in order to user can first previewing photos the photo to be checked of content reselection.
In the prior art, user is when shooting a non-panoramic photo in watching panoramic video, server or terminal meeting The picture of user perspective is intercepted in current panorama video frame according to the photographed data and generates preview graph；But in video The picture intercepted in stream not high definition, and server generates the processing time of photo and preview graph needed for user relatively It is long.
Invention content
In view of the above-mentioned problems, the purpose of the present invention is to provide a kind of methods obtaining picture.
The object of the present invention is achieved like this：
A method of picture is obtained, is included the following steps：
Step a, server obtains panoramic video stream and the original crucial figure group of part multichannel；
Step b, multichannel original crucial figure group in part is carried out the instant original key of panoramic mosaic generating portion by server Scheme and stores；
Step c, the original crucial figure in part is correspondingly arranged by server with pre-set image frame in panoramic video stream, and will The frame parameter of pre-set image frame is sent to user's playback equipment；
Step d, user's playback equipment is decoded panoramic video stream the frame parameter that pre-set image frame is received when broadcasting；With When family sends the photographing instruction of non-panoramic picture in acquisition panoramic video frame, user's playback equipment receives photographing instruction, according to bat Judge whether current image frame is pre-set image frame according to the frame parameter in instruction,
If so, by current picture sectional drawing and being stored in user local photograph album according to the screen size parameter in shooting instruction In；
If it is not, waiting until screen shot when next pre-set image frame occurs and being stored in the photograph album of user local；
User's playback equipment joins the frame parameter for including in instruction, user's attitude parameter and screen size while sectional drawing Number is transmitted to server；
Step e, user can in local photograph album preview response photographing instruction picture, user's playback equipment transmission check Full picture is instructed to server；Server according to the frame parameter obtain it is corresponding that it is original it is crucial scheme, then according to The picture of family attitude parameter and screen size the parameter corresponding user's attitude angle of interception on original crucial figure；
Step f, to user's playback equipment, user's playback equipment receives complete the picture intercepted described in server transmission Picture is corresponding with preview picture indifference.
A kind of method obtaining picture, panoramic video stream described in step a are with n frames for a frame sequence, regarding Frequency stream is divided into several frame sequences according to the time sequencing of broadcasting, and r-th of frame sequence, Ir1, Ir2 ... ... Irn are indicated with Ir Indicate the n frame images in r-th of sequence of frames of video, the multichannel original image of synchronization acquisition with Drn=D1, D2 ..., Dm } it indicates, wherein m indicates that the quantity of camera module in collecting device, m are positive integer, and Drn is indicated in panoramic video stream r-th The multichannel original image corresponding to n-th frame image in sequence of frames of video, and multichannel original crucial figure group in part is collecting device Synchronization acquisition each sequence of frames of video in one or several frame panoramic pictures corresponding to one not spliced group or The original high definition picture of several groups multichannel.
The setting method of a kind of method obtaining picture, the original crucial figure group of part multichannel described in step a includes The original crucial figure group of setting unit multichannel is one group of key figure group, that is, is arranged corresponding to 1 frame image in each sequence of frames of video The original high definition picture of 1 group of multichannel be the original crucial figure group of multichannel corresponding to the sequence of frames of video, frame per second n, then be arranged by The original high definition picture Dsn of last group of multichannel acquired before s seconds is as (s-1)-s seconds crucial figure groups, the key Panoramic pictures of the figure group after panoramic mosaic are as (s-1)-s seconds crucial figures.
The setting method of a kind of method obtaining picture, the original crucial figure group of part multichannel described in step a includes The original crucial figure group of setting unit multichannel is two groups of key figure groups, that is, is arranged corresponding to 2 frame images in each sequence of frames of video The original high definition picture of 2 groups of multichannels be the original crucial figure group of multichannel corresponding to the sequence of frames of video, then be arranged s-0.5 seconds Crucial figure group of last group of multichannel picture Ds (n/2) acquired before as (s-1)-(s-0.5) second, the key figure group Key figure by spliced panoramic pictures as (s-1)-(s-0.5)；Last group of multichannel figure that will be acquired before s seconds Piece Dsn is as (s-0.5)-s seconds crucial figure groups, and panoramic pictures of the key figure group after panoramic mosaic are as the (s-0.5)-s seconds crucial figures.
A kind of method obtaining picture, be in step b it is further mitigate server stress, server is by part multichannel Original key figure group stored and without splicing immediately, when and only received in server and check the instruction of full picture When, before transmission intercepts picture according to user's attitude parameter on crucial figure, the crucial figure group that will respond photographing instruction carries out Panoramic mosaic generates crucial figure.
A kind of method obtaining picture, according to user's attitude parameter and screen size parameter in original pass in step e The picture of corresponding user's attitude angle is intercepted on key figure, the intercept method is by the panoramic pictures, that is, planar rectangular picture weight In new mappings a to spherical surface, i.e., corresponding panorama mapping ball is generated using the side of planar rectangular picture as spherical surface semi arch Face, and planar rectangular picture is mapped on panorama mapping spherical surface；The user visual field is determined according to the transmission posture of user equipment Angular range；According to the angular range in the user visual field spherical figure to be cut is searched on panorama mapping spherical surface；This has been cut Spherical figure is mapped to target rectangle picture；The size of the target rectangle picture is joined according to the screen size for including in photographing instruction It counts to set.
Advantageous effect：
The present invention provides a kind of methods obtaining picture, and user is allowed to obtain the original of high definition during watching panoramic video Beginning picture, while real-time processing is carried out to each request of taking pictures of multiple users, mitigate the pressure of server end, Transmission bandwidth is saved, when user needs not look at full picture, playback equipment, which obtains, shows that the sectional drawing of picture is pre- for user It lookes at picture of taking pictures, while by being correspondingly arranged to crucial figure group/key figure and video frame, realizing preview picture and complete graph The indifference of piece corresponds to.
Specific implementation mode
The specific embodiment of the invention is described in further detail below.
A method of picture is obtained, is included the following steps：
Step a, server obtains panoramic video stream and the original crucial figure group of part multichannel；
Step b, multichannel original crucial figure group in part is carried out the instant original key of panoramic mosaic generating portion by server Scheme and stores；
Step c, the original crucial figure in part is correspondingly arranged by server with pre-set image frame in panoramic video stream, and will The frame parameter of pre-set image frame is sent to user's playback equipment；
Step d, user's playback equipment is decoded panoramic video stream the frame parameter that pre-set image frame is received when broadcasting；With When family sends the photographing instruction of non-panoramic picture in acquisition panoramic video frame, user's playback equipment receives photographing instruction, according to bat Judge whether current image frame is pre-set image frame according to the frame parameter in instruction,
If so, by current picture sectional drawing and being stored in user local photograph album according to the screen size parameter in shooting instruction In；
If it is not, waiting until screen shot when next pre-set image frame occurs and being stored in the photograph album of user local；
User's playback equipment joins the frame parameter for including in instruction, user's attitude parameter and screen size while sectional drawing Number is transmitted to server；
Step e, user can in local photograph album preview response photographing instruction picture, user's playback equipment transmission check Full picture is instructed to server；Server according to the frame parameter obtain it is corresponding that it is original it is crucial scheme, then according to The picture of family attitude parameter and screen size the parameter corresponding user's attitude angle of interception on original crucial figure；
Step f, to user's playback equipment, user's playback equipment receives complete the picture intercepted described in server transmission Picture is corresponding with preview picture indifference.
A kind of method obtaining picture, panoramic video stream described in step a are with n frames for a frame sequence, regarding Frequency stream is divided into several frame sequences according to the time sequencing of broadcasting, and r-th of frame sequence, Ir1, Ir2 ... ... Irn are indicated with Ir Indicate the n frame images in r-th of sequence of frames of video, the multichannel original image of synchronization acquisition with Drn=D1, D2 ..., Dm } it indicates, wherein m indicates that the quantity of camera module in collecting device, m are positive integer, and Drn is indicated in panoramic video stream r-th The multichannel original image corresponding to n-th frame image in sequence of frames of video, and multichannel original crucial figure group in part is collecting device Synchronization acquisition each sequence of frames of video in one or several frame panoramic pictures corresponding to one not spliced group or The original high definition picture of several groups multichannel.
The setting method of a kind of method obtaining picture, the original crucial figure group of part multichannel described in step a includes The original crucial figure group of setting unit multichannel is one group of key figure group, that is, is arranged corresponding to 1 frame image in each sequence of frames of video The original high definition picture of 1 group of multichannel be the original crucial figure group of multichannel corresponding to the sequence of frames of video, frame per second n, then be arranged by The original high definition picture Dsn of last group of multichannel acquired before s seconds is as (s-1)-s seconds crucial figure groups, the key Panoramic pictures of the figure group after panoramic mosaic are as (s-1)-s seconds crucial figures.
For example, frame per second n is equal to 24, if the original crucial figure group of setting unit multichannel is one group of key figure group, can specifically set Set last group of multichannel picture D that will be acquired before the 1st second124As 0-1 seconds crucial figure groups, after panoramic mosaic Panoramic pictures as 0-1 seconds key figure；Last group of multichannel picture D that will be acquired before 2nd second224As 1-2 seconds Crucial figure group, panoramic pictures after panoramic mosaic were as 1-2 seconds key figures.
If the original crucial figure group of setting unit multichannel is two groups of key figure groups, can specifically be arranged will adopt before the 0.5th second Last group of multichannel picture D of collection112As 0-0.5 seconds crucial figure groups, the panoramic pictures conduct after panoramic mosaic 0-0.5 seconds crucial figures, last group of multichannel picture D that will be acquired before the 1st second124As 0.5-1 seconds key figures Group, the panoramic pictures after panoramic mosaic were schemed as 0.5-1 seconds keys；By last acquired before the 1.5th second Group multichannel picture D212As 1-1.5 seconds crucial figure groups, the panoramic pictures after panoramic mosaic were as 1-1.5 seconds Crucial figure, last group of multichannel picture D that will be acquired before the 2nd second224As 1.5-2 seconds crucial figure groups, by complete The spliced panoramic pictures of scape were schemed as 1.5-2 seconds keys.
The merely illustrative explanation of setting method of the above key figure group, for example, crucial figure group also can be by video stream encryption when institute The key frame of setting determines.
The setting method of a kind of method obtaining picture, the original crucial figure group of part multichannel described in step a includes The original crucial figure group of setting unit multichannel is two groups of key figure groups, that is, is arranged corresponding to 2 frame images in each sequence of frames of video The original high definition picture of 2 groups of multichannels be the original crucial figure group of multichannel corresponding to the sequence of frames of video, then be arranged s-0.5 seconds Crucial figure group of last group of multichannel picture Ds (n/2) acquired before as (s-1)-(s-0.5) second, the key figure group Key figure by spliced panoramic pictures as (s-1)-(s-0.5)；Last group of multichannel figure that will be acquired before s seconds Piece Dsn is as (s-0.5)-s seconds crucial figure groups, and panoramic pictures of the key figure group after panoramic mosaic are as the (s-0.5)-s seconds crucial figures.
A kind of method obtaining picture, be in step b it is further mitigate server stress, server is by part multichannel Original key figure group stored and without splicing immediately, when and only received in server and check the instruction of full picture When, before transmission intercepts picture according to user's attitude parameter on crucial figure, the crucial figure group that will respond photographing instruction carries out Panoramic mosaic generates crucial figure.
A kind of method obtaining picture, the frame parameter of pre-set image frame, can be number of frames in step c, for example, The original high definition picture Dsn of last group of multichannel that the crucial figure group of setting acquires before being one group, s seconds is (s-1)-s seconds Crucial figure group, then the number of frames of its corresponding pre-set image frame is Isn.
A kind of method obtaining picture, according to user's attitude parameter and screen size parameter in original pass in step e The picture of corresponding user's attitude angle is intercepted on key figure, the intercept method is by the panoramic pictures, that is, planar rectangular picture weight In new mappings a to spherical surface, i.e., corresponding panorama mapping ball is generated using the side of planar rectangular picture as spherical surface semi arch Face, and planar rectangular picture is mapped on panorama mapping spherical surface；The user visual field is determined according to the transmission posture of user equipment Angular range；According to the angular range in the user visual field spherical figure to be cut is searched on panorama mapping spherical surface；This has been cut Spherical figure is mapped to target rectangle picture；The size of the target rectangle picture is joined according to the screen size for including in photographing instruction It counts to set.

Claims (6)

1. a kind of method obtaining picture, which is characterized in that include the following steps：
Step a, server obtains panoramic video stream and the original crucial figure group of part multichannel；
Step b, multichannel original crucial figure group in part is carried out the original crucial figure of instant panoramic mosaic generating portion simultaneously by server Storage；
Step c, the original crucial figure in part is correspondingly arranged by server with pre-set image frame in panoramic video stream, and will be preset The frame parameter of picture frame is sent to user's playback equipment；
Step d, user's playback equipment is decoded panoramic video stream the frame parameter that pre-set image frame is received when broadcasting；User sends out When sending the photographing instruction of non-panoramic picture in acquisition panoramic video frame, user's playback equipment receives photographing instruction, refers to according to taking pictures Frame parameter in order judges whether current image frame is pre-set image frame,
If so, by current picture sectional drawing and being stored in the photograph album of user local according to the screen size parameter in shooting instruction；
If it is not, waiting until screen shot when next pre-set image frame occurs and being stored in the photograph album of user local；
User's playback equipment passes the frame parameter for including in instruction, user's attitude parameter and screen size parameter while sectional drawing Transport to server；
Step e, user can in local photograph album preview response photographing instruction picture, the transmission of user's playback equipment is checked complete Picture is instructed to server；Server obtains that corresponding original crucial figure according to the frame parameter, then according to user's appearance The picture of state parameter and screen size the parameter corresponding user's attitude angle of interception on original crucial figure；
Step f, the full picture that the picture intercepted described in server transmission is received to user's playback equipment, user's playback equipment It is corresponding with preview picture indifference.
2. a kind of method obtaining picture according to claim 1, which is characterized in that panoramic video stream is described in step a With n frames for a frame sequence, video flowing is divided into several frame sequences according to the time sequencing of broadcasting, is indicated r-th with Ir Frame sequence, Ir1, Ir2 ... ... Irn indicate that the n frame images in r-th of sequence of frames of video, the multichannel of synchronization acquisition are original Picture indicates that wherein m indicates the quantity of camera module in collecting device, and m is positive integer, Drn with Drn={ D1, D2 ..., Dm } Indicate the multichannel original image corresponding to the n-th frame image in panoramic video stream in r-th of sequence of frames of video, and part multichannel is former The crucial figure group that begins is one or several frame panoramic picture institutes of the collecting device in each sequence of frames of video that synchronization acquires Corresponding one not spliced group or the original high definition picture of several groups multichannel.
3. a kind of method obtaining picture according to claim 1, which is characterized in that part multichannel described in step a is original The setting method of crucial figure group includes that the original crucial figure group of setting unit multichannel is one group of key figure group, that is, each video frame is arranged The original high definition picture of 1 group of multichannel corresponding to 1 frame image in sequence is the original key of multichannel corresponding to the sequence of frames of video Figure group, frame per second n, then setting is using the original high definition picture Dsn of last group of multichannel acquired before s seconds as (s-1)-s The crucial figure group of second, panoramic pictures of the key figure group after panoramic mosaic are as (s-1)-s seconds crucial figures.
4. a kind of method obtaining picture according to claim 1, which is characterized in that part multichannel described in step a is original The setting method of crucial figure group includes that the original crucial figure group of setting unit multichannel is two groups of key figure groups, that is, each video frame is arranged The original high definition picture of 2 groups of multichannels corresponding to 2 frame images in sequence is the original key of multichannel corresponding to the sequence of frames of video Figure group, then setting regard last group of multichannel picture Ds (n/2) acquired before s-0.5 seconds as (s-1)-(s-0.5) second Crucial figure group, the key figure group schemes by spliced panoramic pictures as the crucial of (s-1)-(s-0.5)；By s seconds Last group of multichannel picture Dsn acquired before passes through panorama as (s-0.5)-s seconds crucial figure groups, the key figure group Spliced panoramic pictures are as (s-0.5)-s seconds crucial figures.
5. a kind of method obtaining picture according to claim 1, which is characterized in that be that further mitigate services in step b Device pressure, server by the original crucial figure group of part multichannel stored and without splicing immediately, when and only connect in server When receiving the instruction for checking full picture, before transmission intercepts picture according to user's attitude parameter on crucial figure, it will respond The crucial figure group of photographing instruction carries out panoramic mosaic and generates crucial figure.
6. a kind of method obtaining picture according to claim 1, which is characterized in that according to user's attitude parameter in step e With screen size parameter on original crucial figure the corresponding user's attitude angle of interception picture, the intercept method for will it is described entirely Scape picture, that is, planar rectangular picture is remapped on a spherical surface, i.e., using the side of planar rectangular picture as spherical surface semi arch Corresponding panorama mapping spherical surface is generated, and planar rectangular picture is mapped on panorama mapping spherical surface；According to the hair of user equipment The angular range for sending posture to determine the user visual field；It is searched on panorama mapping spherical surface according to the angular range in the user visual field and waits cutting Spherical figure；This has been cut into spherical figure and has been mapped to target rectangle picture；The size of the target rectangle picture refers to according to taking pictures The screen size parameter that includes in order is set.
CN201810279650.2A 2018-03-30 2018-03-30 A method of obtaining picture Pending CN108495144A (en)

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CN112541429A (en) * 2020-12-08 2021-03-23 浙江大华技术股份有限公司 Intelligent image capturing method and device, electronic equipment and storage medium
CN112541429B (en) * 2020-12-08 2024-05-31 浙江大华技术股份有限公司 Intelligent image capture method and device, electronic equipment and storage medium
CN115118883A (en) * 2022-06-28 2022-09-27 润博全景文旅科技有限公司 Image preview method, device and equipment
CN115118883B (en) * 2022-06-28 2024-02-02 润博全景文旅科技有限公司 Image preview method, device and equipment

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