Two-Terminal Video Coding

Following recent works on the rate region of the quadratic Gaussian two-terminal source coding problem and limit-approaching code designs, this paper examines multiterminal source coding of two correlated, i.e., stereo, video sequences to save the sum rate over independent coding of both sequences....

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Vydáno v:	IEEE transactions on image processing Ročník 18; číslo 3; s. 534 - 551
Hlavní autoři:	Yang Yang, Stankovic, V., Zixiang Xiong, Wei Zhao
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	New York, NY IEEE 01.03.2009 Institute of Electrical and Electronics Engineers The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:	Algorithms Allocations Applied sciences Automatic voltage control Belief propagation Codes Coding Coding, codes Compressing Computer Communication Networks Data Compression - methods Data Compression - standards Decision Support Techniques Decoders Decoding Detection, estimation, filtering, equalization, prediction Exact sciences and technology Frames H.264/AVC Image coding Image Enhancement - methods Image Interpretation, Computer-Assisted - methods Image processing Information, signal and communications theory Internationality Low density parity check codes Mathematical analysis multiterminal source coding Parity check codes Quantization Reproducibility of Results Sampling, quantization Sensitivity and Specificity Signal and communications theory Signal processing Signal Processing, Computer-Assisted Signal, noise Slepian-Wolf coding Source coding stereo matching Telecommunications and information theory Vectors (mathematics) Video coding Video Recording - methods Video Recording - standards Video sequences Wyner-Ziv coding Video coding Image processing multiterminal source coding Data compression Resource allocation Video signal Video signal processing Slepian―Wolf coding Credal approach Wyner―Ziv coding Image matching Image sequence stereo matching Parity check codes Motion compensation Source coding Motion estimation Vector quantization Decoding H.264/AVC Image quality Algorithm performance Signal processing Error correcting code Tridimensional image Wyner Ziv problem Disparity Resource management
ISSN:	1057-7149, 1941-0042
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Popis
Shrnutí:	Following recent works on the rate region of the quadratic Gaussian two-terminal source coding problem and limit-approaching code designs, this paper examines multiterminal source coding of two correlated, i.e., stereo, video sequences to save the sum rate over independent coding of both sequences. Two multiterminal video coding schemes are proposed. In the first scheme, the left sequence of the stereo pair is coded by H.264/AVC and used at the joint decoder to facilitate Wyner-Ziv coding of the right video sequence. The first I-frame of the right sequence is successively coded by H.264/AVC intracoding and Wyner-Ziv coding. An efficient stereo matching algorithm based on loopy belief propagation is then adopted at the decoder to produce pixel-level disparity maps between the corresponding frames of the two decoded video sequences on the fly. Based on the disparity maps, side information for both motion vectors and motion-compensated residual frames of the right sequence are generated at the decoder before Wyner-Ziv encoding. In the second scheme, source splitting is employed on top of classic and Wyner-Ziv coding for compression of both I-frames to allow flexible rate allocation between the two sequences. Experiments with both schemes on stereo video sequences using H.264/AVC, LDPC codes for Slepian-Wolf coding of the motion vectors, and scalar quantization in conjunction with LDPC codes for Wyner-Ziv coding of the residual coefficients give a slightly lower sum rate than separate H.264/AVC coding of both sequences at the same video quality.
Bibliografie:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 content type line 23 ObjectType-Article-2 ObjectType-Feature-1
ISSN:	1057-7149 1941-0042
DOI:	10.1109/TIP.2008.2010148