Spatial-Aided Low-Delay Wyner-Ziv Video Coding

doi:10.1155/2009/109057

CORC > 计算技术研究所 > 中国科学院计算技术研究所 > 中国科学院计算技术研究所期刊论文 > 英文

	Spatial-Aided Low-Delay Wyner-Ziv Video Coding
	Wu, Bo 3; Ji, Xiangyang 1; Zhao, Debin 2; Gao, Wen 3,4
刊名	EURASIP JOURNAL ON IMAGE AND VIDEO PROCESSING
	2009
页码	11
ISSN号	1687-5281
DOI	10.1155/2009/109057
英文摘要	In distributed video coding, the side information (SI) quality plays an important role in Wyner-Ziv (WZ) frame coding. Usually, SI is generated at the decoder by the motion-compensated interpolation (MCI) from the past and future key frames under the assumption that the motion trajectory between the adjacent frames is translational with constant velocity. However, this assumption is not always true and thus, the coding efficiency for WZ coding is often unsatisfactory in video with high and/or irregular motion. This situation becomes more serious in low-delay applications since only motion-compensated extrapolation (MCE) can be applied to yield SI. In this paper, a spatial-aided Wyner-Ziv video coding (WZVC) in low-delay application is proposed. In SA-WZVC, at the encoder, each WZ frame is coded as performed in the existing common Wyner-Ziv video coding scheme and meanwhile, the auxiliary information is also coded with the low-complexity DPCM. At the decoder, for the WZ frame decoding, auxiliary information should be decoded firstly and then SI is generated with the help of this auxiliary information by the spatial-aided motion-compensated extrapolation (SA-MCE). Theoretical analysis proved that when a good tradeoff between the auxiliary information coding and WZ frame coding is achieved, SA-WZVC is able to achieve better rate distortion performance than the conventional MCE-based WZVC without auxiliary information. Experimental results also demonstrate that SA-WZVC can efficiently improve the coding performance of WZVC in low-delay application. Copyright (c) 2009 Bo Wu et al.
资助项目	National Science Foundation of China[60736043] ; National Science Foundation of China[60672088] ; Major State Basic Research Development Program of China (973 Program)[2009CB320905]
WOS研究方向	Engineering ; Imaging Science & Photographic Technology
语种	英语
出版者	SPRINGER INTERNATIONAL PUBLISHING AG
WOS记录号	WOS:000285097000001
内容类型	期刊论文
源URL	[http://119.78.100.204/handle/2XEOYT63/11698]
专题	中国科学院计算技术研究所期刊论文_英文
通讯作者	Zhao, Debin
作者单位	1.Tsinghua Univ, Dept Automat, Beijing 100084, Peoples R China 2.Harbin Inst Technol, Dept Comp Sci, Harbin 150001, Peoples R China 3.Chinese Acad Sci, Inst Comp Technol, Digital Media Res Ctr, Beijing 100190, Peoples R China 4.Peking Univ, Sch Elect Engn & Comp Sci, Inst Digital Media, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Wu, Bo,Ji, Xiangyang,Zhao, Debin,et al. Spatial-Aided Low-Delay Wyner-Ziv Video Coding[J]. EURASIP JOURNAL ON IMAGE AND VIDEO PROCESSING,2009:11.
APA	Wu, Bo,Ji, Xiangyang,Zhao, Debin,&Gao, Wen.(2009).Spatial-Aided Low-Delay Wyner-Ziv Video Coding.EURASIP JOURNAL ON IMAGE AND VIDEO PROCESSING,11.
MLA	Wu, Bo,et al."Spatial-Aided Low-Delay Wyner-Ziv Video Coding".EURASIP JOURNAL ON IMAGE AND VIDEO PROCESSING (2009):11.