Window-based rate control for video quality optimization with a novel   INTER-dependent rate-distortion model

doi:10.1016/j.image.2014.09.004

CORC > 北京大学 > 信息科学技术学院

	Window-based rate control for video quality optimization with a novel INTER-dependent rate-distortion model
	Li, Yuan ; Jia, Huizhu ; Zhu, Chuang ; Yang, Mingyuan ; Xie, Xiaodong ; Gao, Wen
刊名	signal processing image communication
	2014
关键词	Rate control Rate-distortion (R-D) model Video coding Consistent video quality Sliding window RATE CONTROL SCHEME LEVEL RATE CONTROL BIT ALLOCATION H.264/AVC QUANTIZATION
DOI	10.1016/j.image.2014.09.004
英文摘要	Most model-based rate control schemes use independent rate-distortion (R-D) models at macroblock (MB) level to represent the relationship among bit rate, distortion and encoding complexity. However the correlations between frames (INTER-dependency) are not well considered for distortion, bit allocation and quantization parameter (QP) decision. In this paper, a novel INTER-dependent R-D model is proposed based on the theoretical analysis of the relationship between the predicted residual of one frame and the distortion of its reference frame. To achieve both bit rate accuracy and consistent video quality, a window-based rate control scheme with two sliding windows is introduced. One window is to group certain previously encoded frames and current frame to control the bit rate and buffer delay; the other is to group certain future encoding frames to optimize the fluctuation of video quality. Furthermore, the optimization of Lagrange multiplier is also discussed under the INTER-dependent situation. Experimental results demonstrate that the proposed window-based rate control scheme with INTER-dependent R-D model can achieve accurate target bit rate and improve PSNR performance, meanwhile the variation of PSNR is the smallest compared with other three benchmark algorithms. This one-pass rate control scheme is highly practical for the real-time video coding applications. (C) 2014 Elsevier B.V. All rights reserved.; Engineering, Electrical & Electronic; SCI(E); EI; 0; ARTICLE; 10; 1046-1062; 29
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/207338]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Li, Yuan,Jia, Huizhu,Zhu, Chuang,et al. Window-based rate control for video quality optimization with a novel INTER-dependent rate-distortion model[J]. signal processing image communication,2014.
APA	Li, Yuan,Jia, Huizhu,Zhu, Chuang,Yang, Mingyuan,Xie, Xiaodong,&Gao, Wen.(2014).Window-based rate control for video quality optimization with a novel INTER-dependent rate-distortion model.signal processing image communication.
MLA	Li, Yuan,et al."Window-based rate control for video quality optimization with a novel INTER-dependent rate-distortion model".signal processing image communication (2014).