中国科学院研究生院学报2007，Vol.24Issue(1)：137-143,7.
基于率失真优化的视频编码研究
Rate distortion optimization based video coding
摘要
Abstract
Rate distortion optimization technique plays an important role in video coding, which is widely used in many video coding modules, such as macroblock mode decision, quantization optinization, etc.In this paper, rate distortion optinization coding and optimal rate control are studied jointly. First,according to the analysis on the relationship between rate and distortion, a complexity scalable rate control is proposed. The proposed rate control algorithm can achieve better coding efficiency while with accurate target bit rate; second, buffer constraint for the bit allocation of rate control is studied, and the bit allocation process is adjusted to meet the buffer constraint, so that the proposed rate control algorithm can guarantee that the buffer never overflows or underflows; finally, a constant quality rate control algorithm is developed based on the research on some subjective quality issues, such as scene change detection,macroblock classification, etc.关键词
H.264/AVS/率失真优化/码率控制/假想的参考解码器Key words
H. 264/ AVS/ rate distortion optimization/ rate control/ hypothetical reference decoder分类
信息技术与安全科学引用本文复制引用
马思伟,高文..基于率失真优化的视频编码研究[J].中国科学院研究生院学报,2007,24(1):137-143,7.基金项目
supported in part by National Fundamental Research and Development Program (973) of China (2001 CCA03300), and by National Science Foundation of China (60333020) （973）
