摘要
高质量的边信息生成技术是分布式视频编码系统实现高压缩效率的关键所在。提出一种边信息的改进方法,对部分译码的Wyner-Ziv(WZ)帧中运动剧烈的区域进行空域修正,使用相邻关键帧对应块的空间预测值与实际值之间的差值来补偿当前部分译码WZ帧中空间预测的误差。仿真结果表明该方法提升了边信息的质量,进而提高了DVC系统的率失真性能。
The good construction technology of side information is essential to fulfill high compression efficiency for distributed video coding system. A refinement method of side information is presented in this paper. The spatial correlation of the fast-motion blocks in the partially decoded Wyner-Ziv （WZ） frame is adopted. The difference between the predication value corresponding to the key frame and the actual value of the block is used to compensate the prediction error of the partially decoded WZ frame. Simulation results show that the proposed method can improve the quality of side information and the rate distortion performance of distributed video coding codec.
出处
《电视技术》
北大核心
2015年第5期31-33,86,共4页
Video Engineering
基金
国家自然科学基金项目(61271190)
河南省教育厅重点项目(14B510029)
关键词
分布式视频编码
边信息
空域修正
distributed video coding
side information
spatial correlation
