CN102055983B - Decoding method for MVC-3D (Manual Volume Control Three-Dimensional) video based on standard H.264 decoder - Google Patents
Decoding method for MVC-3D (Manual Volume Control Three-Dimensional) video based on standard H.264 decoder Download PDFInfo
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Abstract
The invention discloses a decoding method for an MVC-3D (Manual Volume Control Three-Dimensional) video based on a standard H.264 decoder, comprising the following steps of: converting the MVC video into a path of standard H.264 video stream on the premise of no need of actual video decoding and coding; introducing the converted standard H.264 video stream into the standard H.264 decoder for decoding; and then rearranging the decoded video to restore a left-eye and right-eye 3D video. The invention has the advantages of lowering the cost and decoding the MVC-3D video based on the standard H.264 decoder without using a special MVC decoder.
Description
Technical field
The invention belongs to technical field of video processing, be specifically related to a kind of coding/decoding method of MVC-3D three-dimensional video-frequency of measured H.264 decoder.
Background technology
Because it is slightly variant that people's eyes are observed the angle of object, can distinguish that therefore object is far and near, produce three-dimensional vision.The 3D video utilizes this principle just, by the mode of images of left and right eyes difference imaging, so that the user watches the real stereo video effect.
MVC (Multiview Video Coding) standard is the coding standard of formulating for the ease of many video points compression transmission, and wherein the double vision compression transmission that can be 3D eyes video of frequently encoding provides service.The Stereo High profile of MVC becomes international standard in June, 2009, has been applied at present the occasions such as Blu-ray 3D.
For realizing the decoding for the MVC-3D three-dimensional video-frequency, usually need special MVC decoder, decoder can be the various ways such as DSP, FPGA, ASIC or software.But have in the market H.264 decoder chip and the decoding software of a large amount of standards, if can make them also can be used for the decoding of MVC-3D video, and need not dispose special MVC decoder, can greatly reduce the cost of realizing the MVC-3D decoding, and avoid the waste of existing investment.
Summary of the invention
The coding/decoding method that the purpose of this invention is to provide a kind of MVC-3D three-dimensional video-frequency of measured H.264 decoder has overcome the above-mentioned deficiency of prior art, can reduce the decode system cost.
In order to reach above-mentioned purpose of design, the technical solution used in the present invention is as follows:
A kind of coding/decoding method of MVC-3D three-dimensional video-frequency of measured H.264 decoder is converted to the MVC video the H.264 video flowing of 1 road sign standard; H.264 the H.264 decoder that the video flowing of the standard that converts to the is sent into standard processing of decoding; Again decoded video rearrangement is reduced to the images of left and right eyes video.
MVC-3D circulation is changed to the method that H.264 standard flow: with the MVC-3D video flowing of standard need not the actual video decoding and the prerequisite of coding under be converted to the H.264 video flowing of 1 road sign standard, transfer process reorganizes data, the signal reconstruct of encapsulation and index data, transfer process is take NAL as base unit, the NAL data of different MVC-3D stream, go out semantic information by its type-collection, become again the NAL data of corresponding types by the filling of standard H.264, the left side in the MVC-3D video flowing wherein, right eye video compression data NAL, will be by a left side after the conversion, the order serial sort of right eye intervals of video, to revise simultaneously the data head of packed data, so that its standard compliant H.264 video encapsulation standard.
H.264, the transfer process concrete steps that the standard that is changed to that circulates MVC-3D flows are as follows:
The input of S101:MVC-3D stream: the MVC-3D video flowing is carried out type definition by the MVC standard take NAL as unit, H.264 standard is followed in definition, call the processing function, process the type information that function at first reads NAL, and enter different semantic information extraction branches according to its type; For different N AL data, all it is kept in the internal memory, and extracts the semantic information that NAL inside comprises by the definition of the NAL in the MVC standard, and be kept in the corresponding data structure;
The output of S102:H.264 stream: carry out take NAL as unit, its specific implementation mechanism is: in each GOP sequence header of output stream, meet H.264 SPS NAL and the PPS NAL of standard by the tagSeqParametersSet that preserves in the data structure and the formation of tagPictParameterSet data message, and successively output; MVC-3D NAL data for the preservation coded video information of each input, all trigger successively H.264 NAL output function by its input order, in the processing procedure of function, meet the H.264 SliceHeader data of standard by the tagSliceHeader data formation of preserving in the data structure first, the actual coded data of output; For the MVC-3D NAL data of other types, the corresponding H.264 output of NAL data will do not triggered.
H.264, standard is flowed decoding and is reduced to 3D images of left and right eyes video process concrete steps as follows:
S201:H.264 flows decoding: the H.264 decoder that the H.264 video flowing of the standard that converts to the is sent into standard concrete operations of processing of decoding are: behind the H.264 video flowing that forms standard, video flowing is sent into the H.264 decoder of standard take NAL as unit and decoded; In force, data are H.264 sent into by the calling interface that provides of decoder, obtained decoded data by its interface again.
S202: images of left and right eyes video reduction: decoded video rearrangement is reduced to being operating as of images of left and right eyes video: will form the uncompressed video data of arranging frame by frame after the decoding, afterwards, decode system is pressed due order in the MVC-3D stream with uncompressed video data, be reduced to two independent vide sequences of images of left and right eyes, and and then called by outside display system and to carry out 3D and show.
The beneficial effect of the coding/decoding method of the MVC-3D video of measured H.264 decoder of the present invention is: can reduce the decode system cost, so that need not use special-purpose MVC decoder, measured H.264 decoder can be realized the decoding of MVC-3D video.
Embodiment
The coding/decoding method of the MVC-3D three-dimensional video-frequency of the described measured H.264 decoder of the embodiment of the invention is converted to the MVC video the H.264 video flowing of 1 road sign standard; H.264 the H.264 decoder that the video flowing of the standard that converts to the is sent into standard processing of decoding; Again decoded video rearrangement is reduced to the images of left and right eyes video.
What H.264 the standard that is changed to that circulates MVC-3D flowed is operating as: the H.264 video flowing that the MVC-3D video flowing of standard is converted in real time 1 road sign standard, transfer process reorganizes data, the signal reconstruct of encapsulation and index data, transfer process is take NAL as base unit, the NAL data of different MVC-3D stream, go out semantic information by its type-collection, become again the NAL data of corresponding types by the filling of standard H.264, the left side in the MVC-3D video flowing wherein, right eye video compression data NAL, will be by a left side after the conversion, the order serial sort of right eye intervals of video, to revise simultaneously the data head of packed data, so that its standard compliant H.264 video encapsulation standard.
H.264, the transfer process concrete steps that the standard that is changed to that circulates MVC-3D flows are as follows:
The input of S101:MVC-3D stream: the MVC-3D video flowing is carried out type definition by the MVC standard take NAL as unit, H.264 standard is followed in definition, call the processing function, process the type information that function at first reads NAL, and enter different semantic information extraction branches according to its type; Press the MVC standard, the NAL type definition in the video flowing is as follows:
For different N AL data, all it is kept in the internal memory, and extracts the semantic information that NAL inside comprises by the definition of the NAL in the MVC standard, and be kept in the corresponding data structure; Described data structure comprises hrd_parameters, tagSeqParametersSet, tagPictParameterSet, tagSliceHeader.H.264 standard is followed in the definition of said structure.Be defined as follows:
The output of S102:H.264 stream: carry out take NAL as unit, its specific implementation mechanism is: in each GOP sequence header (before being the IDR data) of output stream, meet H.264 SPS NAL and the PPS NAL of standard by the tagSeqParametersSet that preserves in the data structure and the formation of tagPictParameterSet data message, and successively output; MVC-3DNAL data for the preservation coded video information of each input, all trigger successively H.264 NAL output function by its input order, in the processing procedure of function, meet the H.264 SliceHeader data of standard by the tagSliceHeader data formation of preserving in the data structure first, the actual coded data of output; For the MVC-3D NAL data of other types, the corresponding H.264 output of NAL data will do not triggered.
H.264, standard is flowed decoding and is reduced to 3D images of left and right eyes video process concrete steps as follows:
S201:H.264 flows decoding: the H.264 decoder that the H.264 video flowing of the standard that converts to the is sent into standard concrete operations of processing of decoding are: behind the H.264 video flowing that forms standard, video flowing is sent into the H.264 decoder of standard take NAL as unit and decoded; In force, use Broadcom decoding chip and ffmpeg software decoder, data are H.264 sent into by the calling interface that provides of decoder, obtain decoded data by its interface again.
S202: images of left and right eyes video reduction: decoded video rearrangement is reduced to being operating as of images of left and right eyes video: will form the uncompressed video data of arranging frame by frame after the decoding, afterwards, decode system is pressed due order in the MVC-3D stream with uncompressed video data, be reduced to two independent vide sequences of images of left and right eyes, and and then called by outside display system and to carry out 3D stereo display.
More than; be preferred embodiment of the present invention only, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement, all should be encompassed in protection scope of the present invention in.Therefore, protection scope of the present invention should be as the criterion with the protection range that claim was defined.
Claims (1)
1. the coding/decoding method of the MVC-3D three-dimensional video-frequency of a measured H.264 decoder is characterized in that:
With the MVC-3D video flowing of standard need not the actual video decoding and the prerequisite of coding under be converted to the H.264 video flowing of 1 road sign standard, transfer process reorganizes data, the signal reconstruct of encapsulation and index data, transfer process is take NAL as base unit, the NAL data of different MVC-3D video flowings, go out semantic information by its type-collection, become again the NAL data of corresponding types by the filling of standard H.264, the left side in the MVC-3D video flowing wherein, right eye video compression data NAL, will be by a left side after the conversion, the order serial sort of right eye intervals of video, to revise simultaneously the data head of packed data, so that its standard compliant H.264 video encapsulation standard;
H.264 the H.264 decoder that the video flowing of the standard that converts to the is sent into standard processing of decoding obtains decoded video data;
Again decoded video rearrangement is reduced to the images of left and right eyes three-dimensional video-frequency.
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| CN101068366A (en) * | 2007-06-05 | 2007-11-07 | 南京大学 | H.264 based multichannel video transcoding multiplexing method and multiplexer |
| CN101662677A (en) * | 2008-08-29 | 2010-03-03 | 深圳华为通信技术有限公司 | Code stream conversion system, code stream conversion method, code stream identification unit and scheme determination unit |
| CN101669367A (en) * | 2007-03-02 | 2010-03-10 | Lg电子株式会社 | A method and an apparatus for decoding/encoding a video signal |
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| CN101669367A (en) * | 2007-03-02 | 2010-03-10 | Lg电子株式会社 | A method and an apparatus for decoding/encoding a video signal |
| CN101068366A (en) * | 2007-06-05 | 2007-11-07 | 南京大学 | H.264 based multichannel video transcoding multiplexing method and multiplexer |
| CN101662677A (en) * | 2008-08-29 | 2010-03-03 | 深圳华为通信技术有限公司 | Code stream conversion system, code stream conversion method, code stream identification unit and scheme determination unit |
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