Temporal Error Concealment Technique for MPEG-4 Video Streams

被引：1

作者：

丁学文 ^{[1
]}

杨兆选 ^{[1
]}

郭迎春 ^{[1
]}

机构：

[1] School of Electronic Information Engineering Tianjin University, Tianjin 300072, China

[2] School of Electronic Information Engineering, Tianjin University of Technology and Education, Tianjin 300222, China

来源：

Transactions of Tianjin University | 2006年 / 04期

基金：

中国国家自然科学基金;

关键词：

image quality; MPEG-4; decoding; vector; error concealment; bit error rate;

D O I：

暂无

中图分类号：

TN919.8 [图像通信、多媒体通信];

学科分类号：

0810 ; 081001 ;

摘要：

Concerning inter4v mode employed widely in MPEG-4 video, a new temporal error concealment scheme for MPEG-4 video sequences is proposed, which can selectively interpolate one or four motion vectors (MVs) for the missing macroblock (MB) according to the estimated MB coding mode. Performance of the proposed scheme is compared with the existing schemes with multiple testing sequences at different bit error rates. Experimental results show that the proposed algorithm can mask the impairments caused by transmission errors more efficiently than 0 MV and average MV methods by consuming more time for different bit error rates. It has an acceptable image quality close to that obtained by the selective motion vector matching (SMVM) algorithm, while taking less than half of cycles of operations. The proposed concealment scheme is suitable for low complexity video real-time implementations.

引用

页码：291 / 296

页数：6