On Rate-Distortion Modeling and Extraction of H.264/SVC Fine-Granular   Scalable Video

doi:10.1109/TCSVT.2009.2013494

CORC > 北京大学 > 信息科学技术学院

	On Rate-Distortion Modeling and Extraction of H.264/SVC Fine-Granular Scalable Video
	Sun, Jun ; Gao, Wen ; Zhao, Debin ; Li, Weiping
刊名	ieee transactions on circuits and systems for video technology
	2009
关键词	Drift propagation fine-granular scalable (FGS) rate-distortion (R-D) theory scalable video coding (SVC) STANDARD EXTENSION
DOI	10.1109/TCSVT.2009.2013494
英文摘要	Fine-granular scalable (FGS) technologies in H.264/AVC-based scalable video coding (SVC) provide a flexible foundation to accommodate different network capacities. To support efficient quality extraction, it is important to obtain the rate-distortion (R-D) or Distortion-Rate (D-R) function of each individual picture or a group of pictures (GOP). In this paper, firstly, the R-D function of SVC FGS pictures is analyzed with generalized Gaussian model and the D-R curve is proved to be a concave function overall. Considering the current sub-bitplane technology, the D-R function is revisited and inferred to be linear under MSE criterion within an FGS level, which also explains why the observed D-R curve with PSNR criterion is a piece-wise convex function. Secondly, the drift issue of SVC is analyzed, and a simple and effective distortion model is proposed to estimate the reconstruction distortion with drift error. Thirdly, with the above analysis and models, a virtual GOP concept is introduced, and a new priority setting algorithm is designed to achieve the optimal R-D performance in a virtual GOP. The D-R slope of each FGS packet and the D-R function of each virtual GOP are also obtained during the process. Finally, the D-R slopes of FGS levels are used in quality layer assignment to achieve equivalent coding efficiency to the SVC test model but with significantly reduced complexity. The D-R functions of virtual GOPs are utilized to design a practical method for smooth quality reconstruction. Compared to the prior methods, the smoothed video quality is improved not only objectively but also subjectively.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000265090800002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Engineering, Electrical & Electronic; SCI(E); EI; 16; ARTICLE; 3; 323-336; 19
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/161885]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Sun, Jun,Gao, Wen,Zhao, Debin,et al. On Rate-Distortion Modeling and Extraction of H.264/SVC Fine-Granular Scalable Video[J]. ieee transactions on circuits and systems for video technology,2009.
APA	Sun, Jun,Gao, Wen,Zhao, Debin,&Li, Weiping.(2009).On Rate-Distortion Modeling and Extraction of H.264/SVC Fine-Granular Scalable Video.ieee transactions on circuits and systems for video technology.
MLA	Sun, Jun,et al."On Rate-Distortion Modeling and Extraction of H.264/SVC Fine-Granular Scalable Video".ieee transactions on circuits and systems for video technology (2009).