分布式视频编码中的边信息优化算法  

Optimization Algorithm for Side Information in Distributed Video Coding

作　　者：汪芸[1] 卿粼波[1] 王正勇[1] 刘晓娟[1] 

机构地区：[1]四川大学电子信息学院,四川成都610065

出　　处：《电视技术》2015年第9期10-13,18,共5页Video Engineering

基　　金：国家自然科学基金项目(61201388)

摘　　要：在分布式视频编码中的运动补偿插值算法通常采用正方形分块方案,然而考虑到视频中物体的运动和复杂的图像纹理结构,仅采用正方形分块不能得到优异的匹配效果。因此在基于小波域的分布式视频编码系统基础上,采用非规则分块方案来提取物体的边缘信息,从而提高运动估计时的匹配精度。实验结果表明,该方案在一定程度上能提高边信息质量。Square block motion compensalion interpolation algorithm is adopted in distributed video eoding system usuallv, ltowever, when taking the movement of the object and the complex image texture of the video sequence into consideralinn, the square block based scheme cannot receive excellent matching performance. In this paper,an irregular block motion estimation algorithm is adopted to better extract the edge information of the objects to improve the malching precision in the wavelet domain distributed video coding system. Experimental result shows that this algorithm can improve the quality of side information effectively.

关 键 词：分布式视频编码 非规则分块 小波变换 边信息 

分 类 号：TN919.81[电子电信—通信与信息系统]