三维子带视频编码的率失真优化码率控制  

Rate-Distortion Optimized Rate Control in 3D Subband Video Coding

作　　者：廖宁[1] 全子一[1] 门爱东[1] 

机构地区：[1]北京邮电大学电信工程学院,北京100876

出　　处：《北京邮电大学学报》2007年第3期79-82,87,共5页Journal of Beijing University of Posts and Telecommunications

基　　金：国家自然科学基金项目(60672087)

摘　　要：阐述了目前广泛使用的位平面截断算法的理论依据,并指出其次最佳性.提出均方误差最小意义上的最佳三维子带码率分配算法,该算法在任意给定码率限制条件下都能获得最优率失真性能.对比实验还表明,比特分配策略的选择将严重地影响子带分级编码系统的压缩性能.The theoretic fundamentals for the commonly used biplane truncation algorithm is expounded, and its sub-optimality is. pointed out. An optimal subband rate allocation algorithm in meansquared error （MSE） minimization sense was proposed, which achieves persistent optimal rate-distortion performance under any given rate constrains. Comparative experiments also show that the choice of bit allocation strategies has serious influence on the performance of the 3D subband video compression.

关 键 词：三维小波/子带视频编码 码率控制 码率分配 率失真优化 

分 类 号：TN919.8[电子电信—通信与信息系统]