基于像素域的Wyner-Ziv视频编码算法  

Wyner-Ziv video coding algorithm based on pixel-domain

作　　者：赵岩[1] 张希强[1] 陈贺新[1] 

机构地区：[1]吉林大学通信工程学院,长春130012

出　　处：《吉林大学学报（工学版）》2009年第4期1085-1089,共5页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(60672100);科技部国际合作项目(2005DFA10300);吉林省科技发展计划项目(20070528)

摘　　要：在分布式视频编码有损编码理论的基础上,提出了一种基于像素域的分布式视频编码方法。在该方法中,输入的视频帧被分为Key帧和Wyner-Ziv帧两类,其中Key帧使用传统的帧内编码方式进行编码,而Key帧之间的Wyner-Ziv帧使用基于像素域的编码方法。在解码端,通过对相邻的Key帧进行运动补偿插值,得到Wyner-Ziv帧的辅助信息,再结合编码比特流的解码信息获得重构Wyner-Ziv帧。实验结果表明:基于像素域的Wyner-Ziv分布式视频编码算法具有优于H.264全I帧编码的性能。On the basis of the lossy coding theory of distributed video coding, a distributed video coding method in pixel domain was proposed. In this method, the video frames were classified into key frames and Wyner-Ziv frames. The key frames were encoded by using the conventional intra-frame codec, while the Wyner-Ziv frames were encoded by using the proposed distributed video encoding method based on pixel-domain. At the decoder, motion compensated interpolation between adjacent key frames was performed to obtain the accessorial information of Wyner-Ziv frames, which is then combined with the decoded information to obtain the reconstructed Wyner-Ziv frames. Experiment results show that, the performance of the proposed Wyner-Ziv distributed video coding algorithm in pixel domain is better than that of all I frames of H. 264.

关 键 词：通信技术 分布式视频编码 WYNER-ZIV 辅助信息 像素域 

分 类 号：TN911.21[电子电信—通信与信息系统]