B-picture coding in AVS video compression standard

doi:10.1016/j.image.2007.10.003

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

	B-picture coding in AVS video compression standard
	Ji, Xiangyang 2; Zhao, Debin 1; Wu, Feng 3; Lu, Yan 3; Gao, Wen 2
刊名	SIGNAL PROCESSING-IMAGE COMMUNICATION
	2008
卷号	23 期号:1 页码:31-41
关键词	video coding B-picture symmetrical mode direct mode bi-directional prediction
ISSN号	0923-5965
DOI	10.1016/j.image.2007.10.003
英文摘要	This paper first gives a brief overview of the Chinese audio-video coding standard (AVS(1)) especially on prediction modes of motion compensation for B-picture. Furthermore, two techniques adopted by AVS about how to improve motion compensation for B-picture coding are discussed in detail. The first one is the proposed symmetrical mode that replaces the conventional bi-directional mode, in which only one motion vector is coded and another is derived from the coded one with the assumption of approximate constant-speed motion. It can achieve a better trade-off between prediction accuracy and the bits for coding motion information. The second one is the improved temporal direct mode. It not only solves the problem in AVS on how to correctly derive reference index under the constraint of two reference buffers for both P- and B-pictures but also improves the accuracy of derived motion vectors in temporal direct mode with division-free operations. In experimental results, the proposed symmetrical mode and the improved temporal direct mode were integrated into the H.264/MPEG-4 AVC reference software to exhibit their performances. Furthermore, the B-picture coding performance in AVS is also evaluated using different GOP coding structures. (C) 2007 Elsevier B.V. All rights reserved.
WOS研究方向	Engineering
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000253004000003
内容类型	期刊论文
源URL	[http://119.78.100.204/handle/2XEOYT63/11337]
专题	中国科学院计算技术研究所期刊论文_英文
通讯作者	Ji, Xiangyang
作者单位	1.Harbin Inst Technol, Harbin 150006, Peoples R China 2.Chinese Acad Sci, Inst Comp Technol, Beijing, Peoples R China 3.Microsoft Res Asia, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Ji, Xiangyang,Zhao, Debin,Wu, Feng,et al. B-picture coding in AVS video compression standard[J]. SIGNAL PROCESSING-IMAGE COMMUNICATION,2008,23(1):31-41.
APA	Ji, Xiangyang,Zhao, Debin,Wu, Feng,Lu, Yan,&Gao, Wen.(2008).B-picture coding in AVS video compression standard.SIGNAL PROCESSING-IMAGE COMMUNICATION,23(1),31-41.
MLA	Ji, Xiangyang,et al."B-picture coding in AVS video compression standard".SIGNAL PROCESSING-IMAGE COMMUNICATION 23.1(2008):31-41.