CN106792270A - A kind of method for processing video frequency and system - Google Patents
A kind of method for processing video frequency and system Download PDFInfo
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- CN106792270A CN106792270A CN201611124548.2A CN201611124548A CN106792270A CN 106792270 A CN106792270 A CN 106792270A CN 201611124548 A CN201611124548 A CN 201611124548A CN 106792270 A CN106792270 A CN 106792270A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
- H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
- H04N19/176—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
- H04N19/436—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation using parallelised computational arrangements
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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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
- H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
Abstract
The present invention relates to a kind of method for processing video frequency and system.Methods described includes that piecemeal collection is carried out to video data obtains block image, is then encoded, transmitted, decoded respectively by block image, will decode position of the block image for obtaining according to block image in original image and is put into off screen caching.Collection of the present invention to Video processing, coding, transmission, decoding overall process processes strategy using piecemeal, during the strategy of piecemeal extended into the gatherer process of video data, and the position by decoded view data according to block image in original image is put into off screen caching parallel, so that completing the concatenation of block image simultaneously during decoding, directly save the merging treatment step of block image, total time delay of Video processing reduce further, realize video acquisition, coding, transmission, the treatment of more low delay in decoding process, improve Video processing real-time and Consumer's Experience.
Description
Technical field
The present invention relates to field of video processing, more particularly, to a kind of method for processing video frequency and system.
Background technology
IP videos refer to that video is transmitted by network, and IP videos are widely used in video monitoring in recent years, and it is compared
Have the advantages that for traditional analog video deployment it is convenient, beneficial to shared, but equally there is also time delay than larger shortcoming,
In field of video monitoring, slight delay is simultaneously little, but IP video techniques are applied in computer controls field for this
Delay requirement then to it is strictly a lot.
There is a kind of technology to be called network KVM in computer controls field, it transmits the output of computer using network
The computer controls such as image and mouse-keyboard are instructed, because the operation of mouse-keyboard can directly cause the change of computer output image
Change, and user need to rely on image display content to determine operation, therefore generally require prolonging for control computer image
When within 40 milliseconds.Traditional video processing procedure generally comprises signal acquisition, Video coding, transmission of video, video decoding,
The process that video shows finally is arrived, as the increasingly change of signal resolution is big, under identical processing method, the place of each module
The reason time all can accordingly increase, so as to cause total time delay also accordingly to increase.
It is that client obtains pending video file to have a solution in the prior art, and pending video file is torn open
It is divided into several slicing files and is uploaded to service end after compressing, service end is received and decompresses slicing files, is stored in distribution
File system；Downloaded from distributed file system after each slicing files are compressed decoding and be stored in distributed file system, from
New slicing files are obtained in distributed file system and merges into a complete video file.This scheme is in client by video
File is small documents by big file declustering, and burst is uploaded parallel, although can improve efficiency of transmission, reduces network traffics and expends,
And process multiple small documents parallel decoding compressions in service end, process time is reduced, but the process of Video processing is not merely
The decoding of transmission and video including video, further comprises the process such as the collection of video and the display of video, each processing procedure
All there is process time, each process can produce time delay, therefore, this technical scheme still suffers from reducing the space of time delay.And
After this technical scheme splits video file, to finally also needing to increase a process for merging, by pending video file
After all slicing files complete decoding compression treatment, one corresponding merging task of generation is put into merging queue, at video merging
Reason server obtains task from queue is merged, and all new slicing files is merged into and be stored in after a complete video file point
In cloth file system.This merging process needs just to be carried out after waiting all slicing files decoding compression treatment, to a certain degree
On increased Video processing time delay.
The content of the invention
The present invention is to overcome at least one defect described in above-mentioned prior art（It is not enough）, there is provided a kind of low video of time delay
Processing method.
The present invention also provides a kind of time delay low processing system for video.
In order to solve the above technical problems, technical scheme is as follows：
A kind of method for processing video frequency, including：
Piecemeal collection is carried out to video data and obtains block image, then block image is encoded respectively, transmit, decoded,
Position of the block image for obtaining according to block image in original image will be decoded to be put into off screen caching.
The method of the present invention processes tactful to collection, coding, transmission, the decoding overall process of Video processing using piecemeal,
During the strategy of piecemeal extended into the gatherer process of video data, and by decoded view data according to block image in original
Position in beginning image is put into off screen caching parallel so that complete the splicing of block image simultaneously during decoding
Operation, directly saves the merging treatment step of block image, relative to coding in the prior art only to video data, passes
For defeated, decoding process carries out piecemeal treatment and also needs to merging treatment step, the method for the present invention is by the total of Video processing
Time delay reduce further, and realize the treatment of more low delay in video acquisition, coding, transmission, decoding process, improve video
Treatment real-time and Consumer's Experience.
A kind of processing system for video, including acquisition module, coding module, transport module, decoder module；Acquisition module, uses
Block image is obtained in piecemeal collection is carried out to video data；
Coding module, transport module are respectively used to encode block image and transmitted；
Decoder module, for by block image decoded and will decode obtain view data according to block image in original graph
Position as in is put into off screen caching.
In the system of the present invention, strategy is processed using piecemeal in acquisition module, coding module, decoder module, will be divided
The strategy of block is extended in the gatherer process of video data, and decoder module by decoded view data according to block image
Position in original image is put into off screen caching parallel so that decoder module possesses also simultaneously complete while decoding function
Into the splicing function of block image, the decoded merging treatment module of block image is directly saved, relative to prior art
In for coding only to video data, transmission, decoding process carry out piecemeal treatment and also need to merging treatment module, this
The system of invention reduce further total time delay of Video processing, in realizing video acquisition, coding, transmission, decoding process
The treatment of more low delay, improves Video processing real-time and Consumer's Experience.
Brief description of the drawings
Fig. 1 is a kind of flow chart of method for processing video frequency specific embodiment of the invention.
Fig. 2 is time consuming analysis figure of the present invention under 1*2 partitioned modes.
Fig. 3 is to invent a kind of Organization Chart of processing system for video specific embodiment.
Specific embodiment
Accompanying drawing being for illustration only property explanation, it is impossible to be interpreted as the limitation to this patent；
In order to more preferably illustrate the present embodiment, accompanying drawing some parts have omission, zoom in or out, and do not represent the chi of actual product
It is very little；
To those skilled in the art, some known features and its explanation may be omitted and will be understood by accompanying drawing.
In the description of the invention, it is to be understood that additionally, term " first ", " second " are only used for describing purpose, and
It is not intended that indicating or implying relative importance or imply the quantity of indicated technical characteristic.Thus, " first " of restriction,
One or more this feature can be expressed or be implicitly included to the feature of " second ".In the description of the invention, unless separately
It is described, " multiple " is meant that two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " company
Connect " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or it is integrally connected；It can be machine
Tool is connected, or electrically connected；It can be joined directly together, or be indirectly connected with by intermediary, it may be said that two
The connection of element internal.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood in the present invention
Concrete meaning.
Technical scheme is described further with reference to the accompanying drawings and examples.
Embodiment 1
As shown in figure 1, being a kind of flow chart of method for processing video frequency specific embodiment of the invention.Referring to Fig. 1, this specific embodiment
A kind of method for processing video frequency specifically includes following steps：
S101. piecemeal collection is carried out to video data and obtains block image；
S102. block image is encoded respectively；
S103. the block image after coding is transmitted respectively；
S104. receive block image and decoded, the block image that decoding is obtained is according to block image in original image
Position be put into off screen caching in.
In this specific embodiment, the partition strategy of Video processing is extended in the acquisition step of video data, is being obtained
During video data, piecemeal collection is carried out to video data and obtains block image, passed after then block image is encoded respectively
It is defeated, receive block image in receiving terminal and decoded, the block image obtained after decoding is according to block image in original image
In position be put into off screen caching, the storing process of off screen caching is done directly the splicing of block image, and this mode is in video
The overall process for the treatment of all uses piecemeal processing mode, and completes also to complete block diagram while decoding operate in decoding process
As the step of splicing, greatly reduce the time delay of video processing procedure, improve the real-time of video data, it is right for IP videos etc.
The application field of delay requirement, the method for this specific embodiment is more applicable.
In specific implementation process, the specific steps of step S101 include：
View data is obtained from video data source, the default unit of acquisition is scanned to view data with default unit during acquisition
The block image of size.
Generally, it is row pixel or row pixel to preset unit, and image is swept in units of the row or column of image during scanning
The block image for obtaining 1*N or N*1 sizes is retouched, N represents the size of block image.In a preferred embodiment, in order to
Adaptation equipment, the collection to video data is scanned as unit using the row of image, and the strategy of piecemeal is by the way of 1*N
Carry out, i.e. not piecemeal in the horizontal direction, piecemeal in vertical direction, N is the quantity of piecemeal.
It is convenient that subsequently block image is spliced in order to be marked to block image, to video counts in step S101
According to being each block image record frame number and/or timestamp information and block image that obtain when carrying out piecemeal in original graph
Coordinates regional information as in.
In step s 102, coding step directly to collection after each block image encode, each piecemeal during coding
Image is independently to carry out, and carried out parallel during the coding of multiple block images, recorded when in cataloged procedure using collection
Frame number and/or timestamp information.
In step s 103, the block image data after coding are gone out by network transmission, are such as transferred to receiving terminal.Transmission
When each block image be also independently to carry out, and can carry out parallel.
In step S104, after each block image is received parallel, decoded parallel and be stored in off screen parallel and delayed
In depositing.Frame number and/or timestamp during decoding according to each block image are carried out, and are stored in when off screen is cached according to each piecemeal
Coordinates regional information of the frame number and/or timestamp information and block image of image in original image is put into off screen and delays
Deposit, position of the block image in original image is that the coordinates regional information according to each block image in original image is obtained
's.In this step, while complete the splicing and storage of block image when block image is stored in off screen caching, save point
The merging process of block image.
In specific implementation process, the method for this specific embodiment also includes step display：
S105. the view data cached during off screen is cached is switched to current screen to show.
In conventional video processing mode, video data does not carry out piecemeal treatment, and the unification of all videos data is acquired, compiles
Code, transmission and decoding, collection, coding, transmission, the time of decoding piece image are represented with Tc, Te, Tt, Td, then tradition respectively
The time delay of video processing schemes treatment piece image whole process is at least Tc+Te+Tt+Td.
And the solution of the present invention is used, as shown in Fig. 2 then about (Tc+Te+Tt+Td)/N+(N-1) * drops into time delay
Max (Tc/N, Te/N, Tt/N, Td/N), wherein max (Tc/N, Te/N, Tt/N, Td/N) are represented and are taken Tc/N, Te/N, Tt/N, Td/
Maximum one value in N.
Assuming that carry out the piecemeal of 1*2 to image to process, for the purpose of simplifying the description, it is assumed that the value of Tc, Te, Tt, Td is identical, then
Piece image is (Tc+Te+Tt+Td)+Td/2 from middle the taking of display is collected, and can be substantially better than conventional video processing scheme
Tc+Te+Tt+Td。
Additionally, a solution in prior art as mentioned in the background, carries out time-consuming calculating for convenience,
Its step is reduced to encode, transmitted by this, decoding process carries out piecemeal treatment（From in terms of background technology, the video processing procedure is also
Other steps such as data storage are carried out in distributed file system twice including priority）, its time delay is at least including Tc, Te/N, Tt/
N, Td/N, should also include the time Th of image merging treatment, therefore its total time delay is at least Tc+Te/N+Tt/N+Td/N+
Th, it is seen that relative to the solution, still have in time delay significantly reduces the method for the present invention.
Embodiment 2
On the basis of embodiment 1, the present invention also provides a kind of processing system for video.As shown in figure 3, being a kind of video of the invention
The Organization Chart of processing system.Referring to Fig. 2, a kind of processing system for video of this specific embodiment specifically includes acquisition module 201, coding
Module 202, transport module 203, decoder module 204；
Acquisition module 201, block image is obtained for carrying out piecemeal collection to video data；
Coding module 202, for block image to be encoded respectively；
Transport module 203, the block image for that will encode is transmitted；
Decoder module 204 be used for receive block image, by block image decoded and will decode obtain view data according to
Position of the block image in original image is simultaneously put into off screen caching.
In this specific embodiment, the partition strategy of Video processing is extended in the acquisition module 201 of video data, collection
Module 201 carries out piecemeal collection to video data and obtains block image, then the He of coding module 202 when video data is obtained
Block image is carried out coded transmission by transport module 203 respectively, and decoder module 204 receives block image and carries out in receiving terminal
Decoding, position of the block image obtained after decoding according to block image in original image is put into off screen caching, and off screen is delayed
The storing process deposited is done directly the splicing of block image, and this mode all uses piecemeal treatment side in the overall process of Video processing
Formula, and decoder module 204 completes also to complete the splicing of block image while decoding operate in decoding process, greatly reduces
The time delay of video processing procedure, improves the real-time of video data, for IP videos etc. to the application field of delay requirement, this
The method of specific embodiment is more applicable.
In specific implementation process, acquisition module 201 specifically for：
View data is obtained from video data source, view data is carried out in units of image line pixel or row pixel during acquisition
Scanning obtains the block image of 1*N or N*1 sizes, and N represents the row pixel or row pixel of maximum in image.A kind of preferred
In implementation method, in order to adapt to equipment, collection of the acquisition module 201 to video data is swept as unit using the row of image
Retouch, the strategy of piecemeal is carried out by the way of 1*N, i.e. not piecemeal, piecemeal in vertical direction in the horizontal direction.
In order to be marked to block image, convenient that subsequently block image is spliced, acquisition module 201 is to video counts
According to being each block image record frame number and/or timestamp information and block image that obtain when carrying out piecemeal in original graph
Coordinates regional information as in.
In coding module 202, directly to collection after each block image encode, each block image is during coding
Independently carry out, and carried out parallel during the coding of multiple block images, recorded using acquisition module 201 in cataloged procedure
Frame number and/or timestamp information.
In transport module 203, the block image data after coding are gone out by network transmission, be such as transferred to reception
End.Each block image is also independently to carry out during transmission, and can be carried out parallel.
In decoder module 204, after each block image is received parallel, decoded parallel and be stored in off screen parallel
In caching.Frame number and/or timestamp during decoding according to each block image are carried out, and are stored in when off screen is cached according to each point
Coordinates regional information of the frame number and/or timestamp information and block image of block image in original image is put into off screen and delays
Deposit, position of the block image in original image is that the coordinates regional information according to each block image in original image is obtained
's.In this module, while completing the splicing and storage of block image when block image is stored in during off screen is cached, decoding is saved
Merging module afterwards
In specific implementation process, the system of this specific embodiment also includes display module 205, for off screen to be cached in cache
View data current screen is switched to show.
In conventional video processing system, video data does not carry out piecemeal treatment, and the unification of all videos data is acquired, compiles
Code, transmission and decoding, acquisition module, coding module, transport module, decoder module are represented with Tc, Te, Tt, Td to process respectively
The time of piece image, then the time delay of conventional video processing scheme treatment piece image whole process is at least Tc+Te+Tt+
Td。
And the solution of the present invention is used, as shown in Fig. 2 then about (Tc+Te+Tt+Td)/N+(N-1) * drops into time delay
Max (Tc/N, Te/N, Tt/N, Td/N), wherein max (Tc/N, Te/N, Tt/N, Td/N) are represented and are taken Tc/N, Te/N, Tt/N, Td/
Maximum one value in N.
Assuming that carry out the piecemeal of 1*2 to image to process, for the purpose of simplifying the description, it is assumed that the value of Tc, Te, Tt, Td is identical, then
Piece image is (Tc+Te+Tt+Td)+Td/2 from middle the taking of display is collected, and can be substantially better than conventional video processing scheme
Tc+Te+Tt+Td。
The same or analogous part of same or analogous label correspondence；
Position relationship for the explanation of being for illustration only property described in accompanying drawing, it is impossible to be interpreted as the limitation to this patent；
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not to this hair
The restriction of bright implementation method.For those of ordinary skill in the field, can also do on the basis of the above description
Go out the change or variation of other multi-forms.There is no need and unable to be exhaustive to all of implementation method.It is all in the present invention
Spirit and principle within any modification, equivalent and the improvement made etc., should be included in the guarantor of the claims in the present invention
Within the scope of shield.
Claims (10)
1. a kind of method for processing video frequency, it is characterised in that including：
Piecemeal collection is carried out to video data and obtains block image, then block image is encoded respectively, transmit, decoded,
Position of the block image for obtaining according to block image in original image will be decoded to be put into off screen caching.
2. method for processing video frequency according to claim 1, it is characterised in that piecemeal collection is carried out to video data and is divided
The specific steps of block image include：
View data is obtained from video data source, the default unit of acquisition is scanned to view data with default unit during acquisition
The block image of size.
3. method for processing video frequency according to claim 2, it is characterised in that the default unit is row pixel or row picture
Element, the block image for obtaining 1*N or N*1 sizes is scanned during scanning in units of row or column to image, and N represents block image
Size.
4. method for processing video frequency according to claim 1, it is characterised in that video data carries out being obtain every during piecemeal
The coordinates regional information of individual block image record frame number and/or timestamp information and block image in original image.
5. method for processing video frequency according to claim 4, it is characterised in that block image is according to block image in original graph
Position as in is the frame number and/or timestamp information and block image according to each block image when being put into off screen caching
What the coordinates regional information in original image was carried out.
6. the method for processing video frequency according to claim any one of 1-5, it is characterised in that methods described also includes that display is walked
Suddenly：The view data cached during off screen is cached is switched to current screen to show.
7. a kind of processing system for video, including acquisition module, coding module, transport module, decoder module；Characterized in that,
Acquisition module, block image is obtained for carrying out piecemeal collection to video data；
Coding module, transport module are respectively used to encode block image and transmitted；
Decoder module, for by block image decoded and will decode obtain view data according to block image in original graph
Position as in is put into off screen caching.
8. processing system for video according to claim 7, it is characterised in that the acquisition module specifically for：
View data is obtained from video data source, view data is scanned in units of row pixel or row pixel during acquisition
The block image of 1*N or N*1 sizes is obtained, N represents the size of block image.
9. processing system for video according to claim 8, it is characterised in that when acquisition module carries out piecemeal to video data
For each block image for obtaining records the coordinate area of frame number and/or timestamp information and block image in original image
Domain information.
10. processing system for video according to claim 9, it is characterised in that decoder module is by block image according to piecemeal
Position of the image in original image is the frame number and/or timestamp information according to each block image when being put into off screen caching
And coordinates regional information of the block image in original image is carried out.
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| CN201611124548.2A CN106792270A (en) | 2016-12-08 | 2016-12-08 | A kind of method for processing video frequency and system |
| PCT/CN2017/096477 WO2018103359A1 (en) | 2016-12-08 | 2017-08-08 | Video processing method and system |
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| CN201611124548.2A CN106792270A (en) | 2016-12-08 | 2016-12-08 | A kind of method for processing video frequency and system |
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