Adaptive rate control for H.264

doi:10.1016/j.jvcir.2005.04.004

	Adaptive rate control for H.264
	Li, Z. G.; Gao, W.; Pan, F.; Ma, S. W.; Lim, K. P.; Feng, G. N.; Lin, X.; Rahardja, S.; Lu, H. Q.; Lu, Y.
	2006-04-01
发表期刊	JOURNAL OF VISUAL COMMUNICATION AND IMAGE REPRESENTATION
ISSN	1047-3203
卷号	17 期号:2 页码:376-406
摘要	This paper presents a rate control scheme for H.264 by introducing the concept of basic unit and. a linear prediction model. The basic unit can be a macroblock (MB), a slice, or a frame. The linear model is used to predict the mean absolute differences (MADs) of the remaining basic units in the current stored picture by those of the co-located basic units in the previous stored picture. The target bits for the current stored picture are computed by adopting a fluid flow traffic model and linear tracking theory, and are further bounded by two values that'are derived by taking the hypothetical reference decoder (HRD) into consideration. The remaining bits are allocated to the remaining basic units in the current stored picture according to their predicted MADs. The corresponding quantization parameter is computed by using a quadratic rate-distortion model. The rate distortion optimization (RDO) is then performed for all MBs in the current basic unit by the quantization parameter. Both constarit bit rate and variable bit rate cases are studied. The average PSNR is improved by up to 0.8 dB for an encoder using our scheme compared to an encoder using a fixed quantization parameter. With our scheme, an H.264 encoder can be adaptive to time varying channel bandwidth that is available for the coding process. (c) 2005 Elsevier Inc. All rights reserved.
关键词	H.264 rate control adaptive basic unit
DOI	10.1016/j.jvcir.2005.04.004
收录类别	SCI
语种	英语
WOS研究方向	Computer Science
WOS类目	Computer Science, Information Systems ; Computer Science, Software Engineering
WOS记录号	WOS:000242027000011
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
引用统计	被引频次：57[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.204/handle/2XEOYT63/10601
专题	中国科学院计算技术研究所期刊论文_英文
通讯作者	Li, Z. G.
作者单位	1.Inst Infocomm Res, Media Div, Singapore 119613, Singapore 2.Chinese Acad Sci, Inst Comp Technol, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Li, Z. G.,Gao, W.,Pan, F.,et al. Adaptive rate control for H.264[J]. JOURNAL OF VISUAL COMMUNICATION AND IMAGE REPRESENTATION,2006,17(2):376-406.
APA	Li, Z. G..,Gao, W..,Pan, F..,Ma, S. W..,Lim, K. P..,...&Lu, Y..(2006).Adaptive rate control for H.264.JOURNAL OF VISUAL COMMUNICATION AND IMAGE REPRESENTATION,17(2),376-406.
MLA	Li, Z. G.,et al."Adaptive rate control for H.264".JOURNAL OF VISUAL COMMUNICATION AND IMAGE REPRESENTATION 17.2(2006):376-406.