基于可伸缩视频编码的自适应误码隐藏方案  

A dynamic adaptive error concealment scheme for scalable video coding

作　　者：杨仝[1] 唐昆[1] 赵锴[1] 

机构地区：[1]清华大学清华信息科学与技术国家实验室,北京100084

出　　处：《信息技术》2015年第3期89-92,96,共5页Information Technology

摘　　要：文中提出一种基于SVC的动态自适应误码隐藏方案。针对SVC码流增强层部分条带丢失情况,该方案结合散乱型灵活宏块排序功能,在宏块级别采用二阶差分边界匹配准则动态选择基本层和相邻条带信息恢复图像。实验表明,相对SVC标准参考平台JSVM的误码隐藏方案,文中提出方案在不同序列及丢包条件下,重建视频峰值信噪比均得到了一定提升。This paper presents a dynamic adaptive error concealment scheme for scalable video coding.Combined with dispersed flexible macro-block ordering（ FMO）,this scheme can recover corrupted area by making full use of information from base layer and adjacent slices according to the second order differential boundary matching criterion,when partial slices loss occurs under error prone channels. The experimental results show that,compared with the classical error concealment algorithm implemented in JSVM which is the standard platform for SVC,the proposed scheme can improve the peak signal-to-noise ratio（ PSNR） of reconstructed video for different test sequences under various channel conditions.

关 键 词：可伸缩视频编码 误码隐藏 灵活宏块排序 二阶差分边界匹配算法 

分 类 号：TN911.73[电子电信—通信与信息系统]