CN108124194A - A kind of net cast method, apparatus and electronic equipment - Google Patents
A kind of net cast method, apparatus and electronic equipment Download PDFInfo
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- CN108124194A CN108124194A CN201711459082.6A CN201711459082A CN108124194A CN 108124194 A CN108124194 A CN 108124194A CN 201711459082 A CN201711459082 A CN 201711459082A CN 108124194 A CN108124194 A CN 108124194A
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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]
- H04N21/40—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, rendering scenes according to MPEG-4 scene graphs
-
- 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
- H04N21/21—Server components or server architectures
- H04N21/218—Source of audio or video content, e.g. local disk arrays
- H04N21/2187—Live feed
-
- 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
- H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
-
- 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, rendering scenes according to MPEG-4 scene graphs
- H04N21/44012—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving rendering scenes according to scene graphs, e.g. MPEG-4 scene graphs
-
- 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
- H04N21/47—End-user applications
- H04N21/485—End-user interface for client configuration
Abstract
An embodiment of the present invention provides a kind of net cast method, apparatus and electronic equipments.Method includes：User terminal obtains live video stream；The live video stream is decompressed, obtains live video frame；Obtain the foreground region image in the live video frame；The foreground region image is covered on default background image, obtains synthetic video frame；Show the synthetic video frame.The embodiment of the present invention can enable a user to the foreground region image collocation background in the video frame selectively collected for main broadcaster, and the live video stream of viewing main broadcaster's issue that no longer can only be passively improves sense of participation when user watches live streaming.
Description
Technical field
The present invention relates to multimedia content interaction technique field, more particularly to a kind of net cast method, apparatus and electricity
Sub- equipment.
Background technology
Net cast meets the spiritual entertainment requirements of users as one of emerging the Internet, applications.Existing skill
In art, net cast method is that the video frame of live scene of the main broadcaster to collecting in real time is compressed, and obtains live video stream
And content distributing network is published to, user is downloaded from content distributing network by client and decompresses live video stream, is led
The video frame collected is broadcast, and by these video frame of client terminal playing.
Inventor has found that at least there are the following problems for the prior art in the implementation of the present invention：
For a user, the video frame that main broadcaster collects can only be passively watched always, can not be according to self-demand
Foreground region image collocation background in these video frame.
The content of the invention
The embodiment of the present invention is designed to provide a kind of net cast method, to realize that user can be according to self-demand
Foreground region image collocation background in the video frame collected for main broadcaster.Specific technical solution is as follows：
In the embodiment of the present invention in a first aspect, provide a kind of net cast method, the described method includes：
User terminal obtains live video stream；
The live video stream is decompressed, obtains live video frame；
Obtain the foreground region image in the live video frame；
The foreground region image is covered on default background image, obtains synthetic video frame；
Show the synthetic video frame.
With reference to first aspect, in the first possible implementation, the foreground region image is covered described
Before on default background image, further include：
Obtain the real scene video stream that default camera is shot；
It is obtained from the real scene video stream and the foreground region image corresponding real scene video frame on a timeline, work
For the corresponding default background image of the foreground region image
With reference to first aspect, in second of possible realization method, the foreground region image is covered described
Before on default background image, further include：
Obtain the video data of default video generation application generation；
Obtained from the video data with the foreground region image corresponding video frame on a timeline, as described
The corresponding default background image of foreground region image.
With reference to first aspect, in the third possible realization method, the foreground area obtained in live video frame
Image, including：
Based on the Pixel Information of pixel in the live video frame, judge whether is pixel in the live video frame
For foreground area pixel, judging result is obtained；
According to the judging result, the foreground area pixel in the live video frame is extracted, as foreground zone
Area image.
In the second aspect of the embodiment of the present invention, a kind of live video stream generating method is provided, the described method includes：
Main broadcaster end obtains default video capture device and the original video frame that video acquisition obtains is carried out to live scene；
Based on the Pixel Information of the pixel in the original video frame, judge that the pixel in the original video frame is
No is foreground area pixel, obtains judging result；
According to the judging result, generation includes the live video frame of the foreground area pixel；；
The live video frame is compressed, generates live video stream.
With reference to second aspect, in the first possible implementation, the main broadcaster end obtains default video acquisition and sets
The standby original video frame that video acquisition is carried out to live scene and is obtained, including：
Main broadcaster end obtains default video capture device and carries scene depth to what live scene progress video acquisition obtained
The original video frame of information.
It is described to be based in second of possible realization method with reference to the first possible realization method of second aspect
The Pixel Information of pixel in the original video frame judges whether the pixel in the original video frame is foreground area
Pixel, including：
Pixel Information and depth information of scene based on the pixel in the original video frame, judge the original video
Whether the pixel in frame is foreground area pixel.
With reference to second aspect, in the third possible realization method, the main broadcaster end obtains default video acquisition and sets
The standby original video frame that video acquisition is carried out to live scene and is obtained, including：
Main broadcaster end obtains default video capture device and carries out video acquisition to the live scene using solid color as background
Obtained original video frame.
It is described to be based in the 4th kind of possible realization method with reference to the third possible realization method of second aspect
The Pixel Information of pixel in the original video frame judges whether the pixel in the original video frame is foreground area
Pixel, including：
The pixel that pixel value and the solid color are not correspond to is determined as foreground area pixel.
With reference to second aspect, in the 5th kind of possible realization method, described according to the judging result, generation includes institute
The live video frame of foreground area pixel is stated, including：
According to the judging result, the pixel value of non-foreground area pixel is arranged to default background pixel value, is obtained
To live video frame.
With reference to second aspect, in the 6th kind of possible realization method, described according to the judging result, generation includes institute
The live video frame of foreground area pixel is stated, including：
According to the judging result, the non-foreground area pixel in the original video frame is deleted, obtains live video
Frame.
In the third aspect of the embodiment of the present invention, a kind of net cast device is provided, described device includes：
Receiving module, for obtaining live video stream；
Decompression module for decompressing the live video stream, obtains live video frame；
Extraction module, for obtaining the foreground region image in the live video frame；
Synthesis module for the foreground region image to be covered default background image, obtains synthetic video frame；
Display module, for showing the synthetic video frame.
With reference to the third aspect, in the first possible implementation, the synthesis module is additionally operable to obtain default take the photograph
The real scene video stream shot as head；And it is obtained from the real scene video stream with the foreground region image on a timeline
Corresponding real scene video frame, as the corresponding default background image of the foreground region image.
With reference to the third aspect, in second of possible realization method, the synthesis module is additionally operable to obtain default regard
The video data of frequency generation application generation；And acquisition is right on a timeline with the foreground region image from the video data
The video frame answered, as the corresponding default background image of the foreground region image.
With reference to the third aspect, in the third possible realization method, the extraction module, if specifically for described straight
It broadcasts when not including foreground area in video frame with the image of exterior domain, the live video frame is determined as foreground region image.
With reference to the third aspect, in the 4th kind of possible realization method, the extraction module is described straight specifically for being based on
The Pixel Information of pixel in video frame is broadcast, judges whether the pixel in the live video frame is foreground area pixel,
Obtain judging result；And according to the judging result, the foreground area pixel in the live video frame is extracted, as
Foreground region image.
In fourth aspect provided in an embodiment of the present invention, a kind of live video stream generating apparatus, described device bag are provided
It includes：
Video acquiring module, for obtaining the original that default video capture device obtains live scene progress video acquisition
Beginning video frame；
Judgment module for the Pixel Information based on the pixel in the original video frame, judges the original video
Whether the pixel in frame is foreground area pixel, obtains judging result；
Processing module, for according to the judging result, generation to include the live video frame of the foreground area pixel；
Compression module for compressing the live video frame, generates live video stream.
With reference to fourth aspect, in the first possible implementation, the video acquiring module is pre- specifically for obtaining
If video capture device the obtained original video frame with depth information of scene of video acquisition is carried out to live scene.
With reference to the first possible realization method of fourth aspect, in second of possible realization method, the judgement
Module specifically for Pixel Information and depth information of scene based on the pixel in the original video frame, judges the original
Whether the pixel in beginning video frame is foreground area pixel.
With reference to fourth aspect, in the third possible realization method, the video acquiring module is pre- specifically for obtaining
If video capture device the obtained original video frame of video acquisition is carried out to the live scene using solid color as background.
With reference to the third possible realization method of fourth aspect, in the 4th kind of possible realization method, the judgement
Module, specifically for according to the judging result, the pixel value of non-foreground area pixel is arranged to default background pixel
Value, obtains live video frame.
With reference to fourth aspect, in the 5th kind of possible realization method, the processing module, specifically for sentencing according to
It is disconnected as a result, the pixel value of non-foreground area pixel is arranged to default background pixel value, obtain live video frame.
With reference to fourth aspect, in the 6th kind likely realization method, the processing module, specifically for according to
Judging result deletes the non-foreground area pixel in the original video frame, obtains live video frame.
At the 5th aspect of the embodiment of the present invention, a kind of electronic equipment is provided, is connect including first processor, the first communication
Mouthful, first memory and the first communication bus, wherein, first processor, the first communication interface, first memory is logical by first
Believe that bus completes mutual communication；
First memory, for storing computer program；
First processor during for performing the program stored on memory, realizes the method described in any first aspect
Step.
At the 6th aspect of the embodiment of the present invention, a kind of electronic equipment is provided, is connect including second processor, the second communication
Mouthful, second memory and the second communication bus, wherein, second processor, the second communication interface, second memory is logical by second
Believe that bus completes mutual communication；
Second memory, for storing computer program；
Second processor during for performing the program stored on memory, realizes the method described in any second aspect
Step.
At the 7th aspect of the embodiment of the present invention, a kind of computer readable storage medium is provided, it is described computer-readable
Instruction is stored in storage medium, when run on a computer so that it is straight that computer performs any of the above-described video
Broadcasting method.
In the eighth aspect of the embodiment of the present invention, a kind of computer readable storage medium is provided, it is described computer-readable
Instruction is stored in storage medium, when run on a computer so that computer performs any of the above-described live streaming and regards
Frequency stream generating method.
At the 9th aspect of the embodiment of the present invention, a kind of computer program product for including instruction is provided, when it is being counted
When being run on calculation machine so that computer performs any of the above-described net cast method.
At the tenth aspect of the embodiment of the present invention, a kind of computer program product for including instruction is provided, when it is being counted
When being run on calculation machine so that computer performs any of the above-described live video stream generating method.
Net cast method provided in an embodiment of the present invention so that the video frame that user can selectively collect for main broadcaster
In foreground region image collocation background, no longer can only passively viewing main broadcaster issue live video stream, improve user see
Sense of participation when seeing live.Certainly, implement any of the products of the present invention or method it is not absolutely required at the same reach described above
All advantages.
Description of the drawings
It in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described.
Fig. 1 is a kind of flow diagram of net cast method provided in an embodiment of the present invention；
Fig. 2 is a kind of flow diagram of live video stream generating method provided in an embodiment of the present invention；
Fig. 3 is another flow diagram of net cast method provided in an embodiment of the present invention；
Fig. 4 is another flow diagram of net cast method provided in an embodiment of the present invention；
Fig. 5 is another flow diagram of net cast method provided in an embodiment of the present invention；
Fig. 6 is a kind of structure diagram of net cast device provided in an embodiment of the present invention；
Fig. 7 is a kind of structure diagram of live video stream generating apparatus provided in an embodiment of the present invention；
Fig. 8 is a kind of structure diagram of net cast electronic equipment provided in an embodiment of the present invention；
Fig. 9 is a kind of structure diagram that live video stream provided in an embodiment of the present invention generates electronic equipment.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is described.
Referring to Fig. 1, Fig. 1 show a kind of flow diagram of net cast method provided in an embodiment of the present invention.It can be with
Comprise the following steps：
S101, user terminal obtain live video stream.
S102 decompresses live video stream, obtains live video frame.
S103 obtains the foreground region image in live video frame.
S104 covers foreground region image on default background image, obtains synthetic video frame.
S105 shows synthetic video frame.
Select the embodiment so that the foreground region image in the video frame that user can selectively collect for main broadcaster is taken
With background, the live video stream of viewing main broadcaster's issue that no longer can only be passively improves sense of participation when user watches live streaming.
Referring to Fig. 2, Fig. 2 show a kind of flow signal of live video stream generating method provided in an embodiment of the present invention
Figure, may comprise steps of：
S201 main broadcaster end obtains default video capture device and the original video that video acquisition obtains is carried out to live scene
Frame.
S202 based on the Pixel Information of the pixel in original video frame, judges whether is pixel in original video frame
For foreground area pixel, judging result is obtained.
S203, according to judging result, generation includes the live video frame of foreground area pixel；
S204 compresses live video frame, generates live video stream.
Select the embodiment, by the pixel that is then based in original video frame whether be foreground area pixel judgement
As a result, generation includes foreground area pixel live video frame, therefore the live video generated can reflect the judgement knot
Fruit.User terminal can be reduced, the required operand of foreground region image is obtained from live video frame, it is prospect to facilitate user
Area image collocation background.
Referring to Fig. 3, Fig. 3 show a kind of flow diagram of net cast method provided in an embodiment of the present invention, can be with
Comprise the following steps：
S301, main broadcaster end obtain default video capture device and the original video that video acquisition obtains are carried out to live scene
Frame.
Illustratively, main broadcaster adopts live scene progress video with the camera that equipment where main broadcaster end connects using one
Collection, main broadcaster end receives the video data of camera transmission, as original video frame.
S302, main broadcaster's side pressure contracting original video frame generate live video stream.
Each compressed package in live video stream can include one or more live video frames, and different compressions
The number of the live video frame included may be the same or different.
Live video stream is uploaded to content distributing network by S303, main broadcaster end.
Specifically, in the present embodiment main broadcaster end by live video stream via stream pushing server, be uploaded to content distributing network.
S304, user terminal download live video stream from content distributing network.
S305, user terminal decompression live video stream, obtains live video frame.
It is understood that live video stream is a kind of streamed multimedia, it is made of multiple compressed packages, it is each to compress
Include one or more live video frames in bag.User terminal can be it is every acquisition one compressed package after decompress the compression in real time
It wraps or according to a default cycle, periodically decompresses all compressed packages got in the cycle.
S306, Pixel Information of the user terminal based on pixel in live video frame, judges the pixel in live video frame
Whether it is foreground area pixel, obtains judging result.
In the present embodiment, the method for using area growth judges whether the pixel in live video frame is foreground area
Pixel.Specifically, multiple pixels are chosen in live video frame, as sub-pixel point.Judge sub-pixel point and week
Whether each pixel on side is related, if some pixel is related to sub-pixel point, by the pixel and sub-pixel
Point is determined in same region, and using the pixel as sub-pixel point when judging next time, repeats the deterministic process
Until the foreground area of live video frame is separated with background area, the pixel of foreground area is judged as foreground area picture
Vegetarian refreshments.The pixel of non-foreground area is judged as non-foreground area pixel.In other realization methods or using base
The other methods such as the image segmentation algorithm in edge, the image segmentation algorithm based on threshold value, two classification based on machine learning
Foreground area is separated with background area.In the present embodiment, two are judged according to the Euclidean distance between two pixels
Whether a pixel is related, can calculate Euclidean distance according to the following formula：
Wherein, d is the Euclidean distance of two pixels, x1、x2The abscissa of respectively two pixels, y1、y2Respectively
Two ordinates, p1、p2The pixel value of respectively two pixels.When d is not more than default threshold value, it is believed that the two pixels
It is related between point.
S307, user terminal extract the foreground area pixel in live video frame, as foreground area according to judging result
Image.
In the present embodiment, user terminal can check all pixels point in live video frame one by one, if there is pixel
Foreground area pixel is judged as, then is preserved the pixel in the buffer.It, will be in caching after all pixels point is checked out
Pixel as foreground region image.It is understood that the foreground region image in live video frame has been usually contained and regarded
The main watching focus of frequency live streaming, such as：The object that main broadcaster, main broadcaster show to user.
S308, user terminal obtain default background image corresponding with foreground region image.
In an optional implementation manner, user terminal can obtain the real scene video that default camera is shot
Stream, and obtain from the real scene video stream with foreground region image corresponding real scene video frame on a timeline, for the foreground zone
The corresponding default background image of area image.Illustratively, it is assumed that user terminal is a mobile phone application, where user terminal can obtain
The user that the rear camera of mobile phone is shot is presently in the video flowing of scene.
Wherein, default camera can be in equipment where user terminal, can also be in other equipment.Foreground area figure
Picture is corresponding on a timeline with real scene video frame, refers to the position t of foreground region image on a timeline1Exist with real scene video frame
Position t on time shaft2Between meet default mapping relations.For example, t1=t2、t1=t2+5″。
In another optional realization method, user terminal can obtain the video counts of default video generation application generation
According to, and obtain from the video data with foreground region image corresponding video frame on a timeline, as foreground region image
Corresponding default background image.
Wherein, video generation application can be video editing application or others have video systematic function
Using.User terminal can be by API from local video generation application obtain video data or from internet or its
He obtains default video data at equipment.
S309, user terminal cover foreground region image on corresponding default background image, obtain synthetic video frame.
Wherein, different foreground region images can correspond to identical background image, can also correspond to different Backgrounds
Picture.
S310, user terminal show synthetic video frame.
In the present embodiment, according to time shaft order, synthetic video frame is shown frame by frame.Wherein, each synthetic video frame when
Order on countershaft, live video frame during with generating the synthetic video frame belonging to the foreground region image that uses is on a timeline
Order be consistent.Illustratively, the foreground region image that uses is regarded from the live streaming of the 5th second when generating synthetic video frame A
It is got in frequency frame, generating the foreground region image used during synthetic video frame B is obtained from the live video frame of the 6th second
It arrives, then synthetic video frame A is on a timeline prior to synthetic video frame B.
Referring to Fig. 4, Fig. 4 show another flow diagram of net cast method provided in an embodiment of the present invention, can
To comprise the following steps：
S401, main broadcaster end obtain default video capture device and the original video that video acquisition obtains are carried out to live scene
Frame.
In an optional implementation manner, it is the back of the body to solid color that main broadcaster end, which can obtain default video capture device,
The live scene of scape carries out the original video frame that video acquisition obtains.Wherein, solid color can lead to for the live scene of background
It crosses in existing live scene and builds a green curtain to realize, select the realization method, since background color is solid color,
It can reduce in subsequent step and judge whether pixel belongs to the required calculation amount of foreground area and so that result is more accurate.
In another optional realization method, main broadcaster end can obtain default video capture device to live scene into
The original video frame with depth information of scene that row video acquisition obtains.In the present embodiment, depth information of scene can be
It is collected by the infrared line lattice range unit in default video capture device.It can be follow-up to select the realization method
The criterion whether pixel belongs to beyond foreground area offer pixel value is judged in step so that result is more accurate.It can manage
Solution, the scene depth residing for pixel is deeper, then the pixel is that the confidence level of foreground area pixel is lower.
S402, the Pixel Information of pixel of main broadcaster's end group in original video frame, judges the pixel in original video frame
Whether point is foreground area pixel, obtains judging result.
If in S401, what main broadcaster end obtained is that default video capture device obtains live scene progress video acquisition
The original video frame with depth information of scene, then in an optional implementation manner, main broadcaster end can be based on original regarding
The Pixel Information and depth information of scene of pixel in frequency frame judge whether the pixel in original video frame is foreground area
Pixel.
If in S401, what main broadcaster end obtained is live scene of the default video capture device to solid color for background
The original video frame that video acquisition obtains is carried out, then in an optional implementation manner, main broadcaster end can be by pixel value with being somebody's turn to do
The pixel that solid color is not correspond to is determined as foreground area pixel.
S403, main broadcaster end include the live video frame of foreground area pixel according to judging result, generation.
In an optional implementation manner, main broadcaster end can be according to judging result, by the picture of non-foreground area pixel
Plain value is arranged to default background pixel value, obtains live video frame.It is understood that even if the background of live scene is single
Different colors may also be presented in one color, light problem during due to shooting, the background of the live scene in original video frame,
Therefore the realization method is selected, the pixel value that can cause background area pixels point in live video frame is consistent, saves user
End obtains the time that the foreground area in live video frame is spent.
In another optional realization method, main broadcaster end can be according to judging result, before deleting non-in original video
Scene area pixel obtains live video frame.The realization method is selected, due to not including in live video frame beyond foreground area
Image, therefore user terminal can be enabled directly using live video frame as foreground region image, to save user terminal and obtain
Cut-off broadcasts the time that the foreground area in video frame is spent.
S404, main broadcaster's side pressure contracting original video frame generate live video stream.
The step is identical with S302, may refer to the description of foregoing S302, details are not described herein.
Live video stream is uploaded to content distributing network by S405, main broadcaster end.
The step is identical with S303, may refer to the description of foregoing S303, details are not described herein.
S406, user terminal download live video stream from content distributing network.
The step is identical with S304, may refer to the description of foregoing S304, details are not described herein.
S407, user terminal decompression live video stream, obtains live video frame.
The step is identical with S305, may refer to the description of foregoing S305, details are not described herein.
S408, user terminal obtain the foreground region image in live video frame.
In the present embodiment, if not including the image beyond foreground area in live video frame, user terminal can will be broadcast live
Video frame is determined as foreground region image.
S409, user terminal obtain default background image corresponding with foreground region image.
The step is identical with S308, may refer to the description of foregoing S308, details are not described herein.
S410, user terminal cover foreground region image on corresponding default background image, obtain synthetic video frame.
The step is identical with S309, may refer to the description of foregoing S309, details are not described herein.
S411, user terminal show synthetic video frame.
The step is identical with S310, may refer to the description of foregoing S310, details are not described herein.
The embodiment is selected, since main broadcaster end is whether pixel in original video frame is foreground area pixel
Judging result generate live video frame, therefore the live video frame generated can reflect the judging result, user terminal
Foreground region image is obtained from live video frame on this basis can save required operand, shorten user terminal flow
Time improves user experience.
Referring to Fig. 5, Fig. 5 show another flow diagram of net cast method provided in an embodiment of the present invention, can
To comprise the following steps：
S501, main broadcaster end obtain default video capture device and the original video that video acquisition obtains are carried out to live scene
Frame.
S502, main broadcaster's side pressure contracting original video frame, generates pending video flowing.
Pending video flowing is uploaded to server-side by S503, main broadcaster end.
S504, server-side decompress pending video flowing, obtain pending video frame.
S505, Pixel Information of the server-side based on pixel in pending video frame, judges the picture in pending video frame
Whether vegetarian refreshments is foreground area pixel, obtains judging result.
S506, server-side include the live video frame of foreground area pixel according to judging result, generation.
S507, server-side compression live video frame, obtains live video stream.
Live video stream is sent to content distributing network by S508, server-side.
S509, user terminal download live video stream from content distributing network.
The step is identical with S406, may refer to the description of foregoing S406, details are not described herein.
S510, user terminal decompression live video stream, obtains live video frame.
The step is identical with S407, may refer to the description of foregoing S407, details are not described herein.
S511, user terminal obtain the foreground region image in live video frame.
The step is identical with S408, may refer to the description of foregoing S408, details are not described herein.
S512, user terminal obtain default background image corresponding with foreground region image.
The step is identical with S409, may refer to the description of foregoing S409, details are not described herein.
S513, user terminal cover foreground region image on corresponding default background image, obtain synthetic video frame.
The step is identical with S410, may refer to the description of foregoing S410, details are not described herein.
S514, user terminal show synthetic video frame.
The step is identical with S411, may refer to the description of foregoing S411, details are not described herein.
The realization method is selected, image procossing, Ke Yijie can be carried out using the powerful performance of equipment where server-side
The time that image procossing is spent is saved, the expense of equipment where reducing equipment where main broadcaster end and user terminal.
Referring to Fig. 6, Fig. 6 show a kind of structure diagram of net cast device provided in an embodiment of the present invention, can be with
Including：
Receiving module 601, for obtaining live video stream；
Decompression module 602 for decompressing live video stream, obtains live video frame；
Extraction module 603, for obtaining the foreground region image in live video frame；
Synthesis module 604 for foreground region image to be covered default background image, obtains synthetic video frame；
Display module 605, for showing synthetic video frame.
In an optional implementation manner, synthesis module 604 can be also used for obtaining default camera shooting extraction module head
Shoot obtained real scene video stream；And it is obtained from the real scene video stream and foreground region image corresponding outdoor scene on a timeline
Video frame, as the corresponding default background image of foreground region image.
In an optional implementation manner, synthesis module 604 can be also used for obtaining default video generation application life
Into video data；And obtained from the video data with foreground region image corresponding video frame on a timeline, as preceding
The corresponding default background image of scenic spot area image.
In an optional implementation manner, if extraction module 603 can be specifically used for not including in live video frame
When foreground area is with the image of exterior domain, live video frame is determined as foreground region image.
In an optional implementation manner, extraction module 603 can be specifically used for based on pixel in live video frame
Pixel Information, judge whether the pixel in live video frame is foreground area pixel, obtains judging result；And according to this
Judging result extracts the foreground area pixel in live video frame, as foreground region image.
Referring to Fig. 7, Fig. 7 show the provided in an embodiment of the present invention and mating live video stream of aforementioned video live broadcast device
A kind of structure diagram of generating means, can include：
Video acquiring module 701 obtains live scene progress video acquisition for obtaining default video capture device
Original video frame；
Judgment module 702 for the Pixel Information based on the pixel in original video frame, is judged in original video frame
Whether pixel is foreground area pixel, obtains judging result；
Processing module 703, for according to judging result, generation to include the live video frame of foreground area pixel；
Compression module 704 for compressing live video frame, generates live video stream.
In an optional implementation manner, video acquiring module 701 can be specifically used for obtaining default video acquisition
Equipment carries out live scene the original video frame with depth information of scene that video acquisition obtains.
Further, with reference to the realization method, in an optional implementation manner, judgment module 702 can be used specifically
In Pixel Information and depth information of scene based on the pixel in original video frame, judge that the pixel in original video frame is
No is foreground area pixel.
In an optional implementation manner, video acquiring module 701 can be specifically used for obtaining default video acquisition
Equipment carries out the live scene using solid color as background the original video frame that video acquisition obtains.
Further, with reference to the realization method, in an optional implementation manner, judgment module 702, specifically for inciting somebody to action
The pixel that pixel value is not correspond to the solid color is determined as foreground area pixel.
In an optional implementation manner, processing module 703, specifically for according to judging result, by non-foreground area
The pixel value of pixel is arranged to default background pixel value, obtains live video frame.
In an optional implementation manner, processing module 703, specifically for according to judging result, deleting original video
Non- foreground area pixel in frame, obtains live video frame.
The embodiment of the present invention additionally provides a kind of electronic equipment, as shown in figure 8, communicating including first processor 801, first
Interface 802,803 and first communication bus 804 of first memory, wherein, first processor 801, the first communication interface 802, the
One memory 803 completes mutual communication by the first communication bus 804,
First memory 803, for storing computer program；
First processor 801 during for performing the program stored on first memory 803, can realize following steps：
Obtain live video stream；Live video stream is decompressed, obtains live video frame；Obtain the foreground zone in live video frame
Area image；Foreground region image is covered on default background image, obtains synthetic video frame；Show synthetic video frame.
It, can be with before foreground region image is covered default background image in a kind of optional realization method
Including：
Obtain the real scene video stream that default camera is shot；It is obtained and foreground area figure from the real scene video stream
As corresponding real scene video frame on a timeline, as the corresponding default background image of foreground region image.
In an optional implementation manner, before foreground region image is covered default background image, may be used also
To include：
Obtain the video data of default video generation application generation；Acquisition and foreground region image from the video data
Corresponding video frame on a timeline, as the corresponding default background image of foreground region image.
In an optional implementation manner, the foreground region image in live video frame is obtained, can be included：
If do not include foreground area in live video frame with the image of exterior domain, live video frame is determined as prospect
Area image.
In an optional implementation manner, the foreground region image in live video frame is obtained, can be included：
Based on the Pixel Information of pixel in live video frame, judge whether the pixel in live video frame is foreground zone
Domain pixel, obtains judging result；According to judging result, the foreground area pixel in live video frame is extracted, as prospect
Area image.
The embodiment of the present invention additionally provides a kind of electronic equipment, as shown in figure 9, communicating including second processor 901, second
Interface 902,903 and second communication bus 904 of second memory, wherein, second processor 901, the second communication interface 902, the
Two memories 903 complete mutual communication by the second communication bus 904,
First memory 903, for storing computer program；
First processor 901 during for performing the program stored on first memory 903, can realize following steps：
It obtains default video capture device and the original video frame that video acquisition obtains is carried out to live scene；Based on original
The Pixel Information of pixel in video frame judges whether the pixel in original video frame is foreground area pixel, is obtained
Judging result；According to the judging result, generation includes the live video frame of foreground area pixel；Live video frame is compressed,
Generate live video stream.
In an optional implementation manner, default video capture device is obtained to obtain live scene progress video acquisition
The original video frame arrived can include：
Obtain that default video capture device carries out live scene that video acquisition obtains with depth information of scene
Original video frame.
Further, with reference to the realization method, in an optional implementation manner, based on the pixel in original video frame
The Pixel Information of point, judges whether the pixel in original video frame is foreground area pixel, can include：
Pixel Information and depth information of scene based on the pixel in original video frame, judge the picture in original video frame
Whether vegetarian refreshments is foreground area pixel.
In an optional implementation manner, default video capture device is obtained to obtain live scene progress video acquisition
The original video frame arrived can include：
It obtains default video capture device and what video acquisition obtained is carried out to the live scene using solid color as background
Original video frame.
Further, with reference to the realization method, in an optional implementation manner, based on the pixel in original video frame
The Pixel Information of point, judges whether the pixel in original video frame is foreground area pixel, can include：
The pixel that pixel value and the solid color are not correspond to is determined as foreground area pixel.
In an optional implementation manner, according to judging result, generation includes the live video of foreground area pixel
Frame can include：
According to judging result, the pixel value of non-foreground area pixel is arranged to default background pixel value, is obtained straight
Broadcast video frame.
In an optional implementation manner, according to judging result, generation includes the live video of foreground area pixel
Frame can include：
According to judging result, the non-foreground area pixel in original video frame is deleted, obtains live video frame.
The communication bus that above-mentioned electronic equipment is mentioned can be Peripheral Component Interconnect standard (Peripheral Component
Interconnect, PCI) bus or expanding the industrial standard structure (Extended Industry Standard
Architecture, EISA) bus etc..The communication bus can be divided into address bus, data/address bus, controlling bus etc..For just
It is only represented in expression, figure with a thick line, it is not intended that an only bus or a type of bus.
Communication interface is for the communication between above-mentioned electronic equipment and other equipment.
Memory can include random access memory (Random Access Memory, RAM), can also include non-easy
The property lost memory (Non-Volatile Memory, NVM), for example, at least a magnetic disk storage.Optionally, memory may be used also
To be at least one storage device for being located remotely from aforementioned processor.
Above-mentioned processor can be general processor, including central processing unit (Central Processing Unit,
CPU), network processing unit (Network Processor, NP) etc.；It can also be digital signal processor (Digital Signal
Processing, DSP), it is application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), existing
It is field programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic device, discrete
Door or transistor logic, discrete hardware components.
In another embodiment provided by the invention, a kind of computer readable storage medium is additionally provided, which can
It reads to be stored with instruction in storage medium, when run on a computer so that computer performs any in above-described embodiment regard
Frequency live broadcasting method.
In another embodiment provided by the invention, a kind of computer readable storage medium is additionally provided, which can
It reads to be stored with instruction in storage medium, when run on a computer so that computer performs any straight in above-described embodiment
Broadcast video stream generating method.
In another embodiment provided by the invention, a kind of computer program product for including instruction is additionally provided, when it
When running on computers so that computer performs any net cast method in above-described embodiment.
In another embodiment provided by the invention, a kind of computer program product for including instruction is additionally provided, when it
When running on computers so that computer performs any live video stream generating method in above-described embodiment.
In the above-described embodiments, can come wholly or partly by software, hardware, firmware or its any combination real
It is existing.When implemented in software, can entirely or partly realize in the form of a computer program product.The computer program
Product includes one or more computer instructions.When loading on computers and performing the computer program instructions, all or
It partly generates according to the flow or function described in the embodiment of the present invention.The computer can be all-purpose computer, special meter
Calculation machine, computer network or other programmable devices.The computer instruction can be stored in computer readable storage medium
In or from a computer readable storage medium to another computer readable storage medium transmit, for example, the computer
Instruction can pass through wired (such as coaxial cable, optical fiber, number from a web-site, computer, server or data center
User's line (DSL)) or wireless (such as infrared, wireless, microwave etc.) mode to another web-site, computer, server or
Data center is transmitted.The computer readable storage medium can be any usable medium that computer can access or
It is the data storage devices such as server, the data center integrated comprising one or more usable mediums.The usable medium can be with
It is magnetic medium, (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or semiconductor medium (such as solid state disk
Solid State Disk (SSD)) etc..
It is understood that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only will including those
Element, but also including other elements that are not explicitly listed or further include as this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
Also there are other identical elements in process, method, article or equipment including the element.
Each embodiment in this specification is described using relevant mode, identical similar portion between each embodiment
Point just to refer each other, and the highlights of each of the examples are difference from other examples.Especially for device,
Electronic equipment, computer readable storage medium, computer program product comprising instruction embodiment for, due to its basic phase
Embodiment of the method is similar to, so description is fairly simple, the relevent part can refer to the partial explaination of embodiments of method.
Presently preferred embodiments of the present invention is above are only, is not intended to limit the scope of the present invention.It is all in this hair
Any modifications, equivalent replacements and improvements are made within bright spirit and principle, are all contained in protection scope of the present invention.
Claims (26)
- A kind of 1. net cast method, which is characterized in that including：User terminal obtains live video stream；The live video stream is decompressed, obtains live video frame；Obtain the foreground region image in the live video frame；The foreground region image is covered on default background image, obtains synthetic video frame；Show the synthetic video frame.
- 2. according to the method described in claim 1, it is characterized in that, it is described the foreground region image covered it is default Before on background image, further include：Obtain the real scene video stream that default camera is shot；Obtained from the real scene video stream with the foreground region image corresponding real scene video frame on a timeline, as institute State the corresponding default background image of foreground region image.
- 3. according to the method described in claim 1, it is characterized in that, it is described the foreground region image covered it is default Before on background image, further include：Obtain the video data of default video generation application generation；Obtained from the video data with the foreground region image corresponding video frame on a timeline, as the prospect The corresponding default background image of area image.
- 4. according to the method described in claim 1, it is characterized in that, it is described obtain live video frame in foreground region image, Including：If do not include foreground area in the live video frame with the image of exterior domain, the live video frame is determined as Foreground region image.
- 5. according to the method described in claim 1, it is characterized in that, it is described obtain live video frame in foreground region image, Including：Based on the Pixel Information of pixel in the live video frame, judge the pixel in the live video frame whether be before Scene area pixel, obtains judging result；According to the judging result, the foreground area pixel in the live video frame is extracted, as foreground area figure Picture.
- 6. a kind of live video stream generating method, which is characterized in that including：Main broadcaster end obtains default video capture device and the original video frame that video acquisition obtains is carried out to live scene；Based on the Pixel Information of the pixel in the original video frame, judge the pixel in the original video frame whether be Foreground area pixel, obtains judging result；According to the judging result, generation includes the live video frame of the foreground area pixel；The live video frame is compressed, generates live video stream.
- 7. according to the method described in claim 6, it is characterized in that, the main broadcaster end obtains default video capture device to straight It broadcasts scene and carries out the original video frame that video acquisition obtains, including：Main broadcaster end obtains default video capture device and carries depth information of scene to what live scene progress video acquisition obtained Original video frame.
- 8. the method according to the description of claim 7 is characterized in that picture of the pixel based in the original video frame Prime information judges whether the pixel in the original video frame is foreground area pixel, including：Pixel Information and depth information of scene based on the pixel in the original video frame, judge in the original video frame Pixel whether be foreground area pixel.
- 9. according to the method described in claim 6, it is characterized in that, the main broadcaster end obtains default video capture device to straight It broadcasts scene and carries out the original video frame that video acquisition obtains, including：Main broadcaster end obtains default video capture device and the live scene progress video acquisition using solid color as background is obtained Original video frame.
- 10. the according to the method described in claim 9, it is characterized in that, pixel based in the original video frame Pixel Information judges whether the pixel in the original video frame is foreground area pixel, including：The pixel that pixel value and the solid color are not correspond to is determined as foreground area pixel.
- 11. according to the method described in claim 6, it is characterized in that, described according to the judging result, generation is comprising before described The live video frame of scene area pixel, including：According to the judging result, the pixel value of non-foreground area pixel is arranged to default background pixel value, is obtained straight Broadcast video frame.
- 12. according to the method described in claim 6, it is characterized in that, described according to the judging result, generation is comprising before described The live video frame of scene area pixel, including：According to the judging result, the non-foreground area pixel in the original video frame is deleted, obtains live video frame.
- 13. a kind of net cast device, which is characterized in that including：Receiving module, for obtaining live video stream；Decompression module for decompressing the live video stream, obtains live video frame；Extraction module, for obtaining the foreground region image in the live video frame；Synthesis module for the foreground region image to be covered default background image, obtains synthetic video frame；Display module, for showing the synthetic video frame.
- 14. device according to claim 13, which is characterized in that the synthesis module is additionally operable to obtain default camera shooting The real scene video stream that head shooting obtains；And acquisition is right on a timeline with the foreground region image from the real scene video stream The real scene video frame answered, as the corresponding default background image of the foreground region image.
- 15. according to the device described in right 13, which is characterized in that the synthesis module is additionally operable to obtain default video generation Using the video data of generation；And it is obtained from the video data and the foreground region image is corresponding on a timeline regards Frequency frame, as the corresponding default background image of the foreground region image.
- 16. device according to claim 13, which is characterized in that the extraction module, if specifically for the live streaming When not including foreground area in video frame with the image of exterior domain, the live video frame is determined as foreground region image.
- 17. device according to claim 13, which is characterized in that the extraction module, specifically for being based on the live streaming The Pixel Information of pixel in video frame judges whether the pixel in the live video frame is foreground area pixel, is obtained To judging result；And according to the judging result, the foreground area pixel in the live video frame is extracted, as preceding Scenic spot area image.
- 18. a kind of live video stream generating apparatus, which is characterized in that including：Video acquiring module, carry out that video acquisition obtains for obtaining default video capture device to live scene original regards Frequency frame；Judgment module for the Pixel Information based on the pixel in the original video frame, is judged in the original video frame Pixel whether be foreground area pixel, obtain judging result；Processing module, for according to the judging result, generation to include the live video frame of the foreground area pixel；Compression module for compressing the live video frame, generates live video stream.
- 19. device according to claim 18, which is characterized in that the video acquiring module, it is default specifically for obtaining Video capture device the obtained original video frame with depth information of scene of video acquisition is carried out to live scene.
- 20. device according to claim 19, which is characterized in that the judgment module, it is described original specifically for being based on The Pixel Information and depth information of scene of pixel in video frame, judge the pixel in the original video frame whether be before Scene area pixel.
- 21. device according to claim 18, which is characterized in that the video acquiring module, it is default specifically for obtaining Video capture device the obtained original video frame of video acquisition is carried out to the live scene using solid color as background.
- 22. device according to claim 21, which is characterized in that the judgment module, specifically for by pixel value and institute It states the pixel that solid color is not correspond to and is determined as foreground area pixel.
- 23. device according to claim 18, which is characterized in that the processing module, specifically for according to the judgement As a result, the pixel value of non-foreground area pixel is arranged to default background pixel value, live video frame is obtained.
- 24. device according to claim 18, which is characterized in that the processing module, specifically for according to the judgement As a result, deleting the non-foreground area pixel in the original video frame, live video frame is obtained.
- 25. a kind of electronic equipment, which is characterized in that logical including first processor, the first communication interface, first memory and first Believe bus, wherein, first processor, the first communication interface, first memory is completed mutual logical by the first communication bus Letter；First memory, for storing computer program；First processor during for performing the program stored on memory, realizes any method steps of claim 1-5 Suddenly.
- 26. a kind of electronic equipment, which is characterized in that logical including second processor, the second communication interface, second memory and second Believe bus, wherein, second processor, the second communication interface, second memory is completed mutual logical by the second communication bus Letter；Second memory, for storing computer program；Second processor during for performing the program stored on memory, realizes any methods of claim 6-12 Step.
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| CN112055246A (en) * | 2020-09-11 | 2020-12-08 | 北京爱奇艺科技有限公司 | Video processing method, device and system and storage medium |
| CN112055246B (en) * | 2020-09-11 | 2022-09-30 | 北京爱奇艺科技有限公司 | Video processing method, device and system and storage medium |
| CN112423006A (en) * | 2020-11-09 | 2021-02-26 | 珠海格力电器股份有限公司 | Live broadcast scene switching method, device, equipment and medium |
| CN112367534A (en) * | 2020-11-11 | 2021-02-12 | 成都威爱新经济技术研究院有限公司 | Virtual-real mixed digital live broadcast platform and implementation method |
| CN112367534B (en) * | 2020-11-11 | 2023-04-11 | 成都威爱新经济技术研究院有限公司 | Virtual-real mixed digital live broadcast platform and implementation method |
| WO2022105097A1 (en) * | 2020-11-23 | 2022-05-27 | 深圳市慧鲤科技有限公司 | Video stream processing method and apparatus, and electronic device, storage medium and computer program |
| CN112702615A (en) * | 2020-11-27 | 2021-04-23 | 深圳市创成微电子有限公司 | Network live broadcast audio and video processing method and system |
| CN112702615B (en) * | 2020-11-27 | 2023-08-08 | 深圳市创成微电子有限公司 | Network direct broadcast audio and video processing method and system |
| CN112653851A (en) * | 2020-12-22 | 2021-04-13 | 维沃移动通信有限公司 | Video processing method and device and electronic equipment |
| CN115086686A (en) * | 2021-03-11 | 2022-09-20 | 北京有竹居网络技术有限公司 | Video processing method and related device |
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