Improvements of video coding over wireless channel and analysis of error probability and rate control

被引：0
|
作者：
Zhou, YX [1 ]
Gracanin, D [1 ]
机构：
[1] Virginia Tech, Dept Comp Sci, Falls Church, VA 22043 USA
来源：
PROCEEDINGS EC-VIP-MC 2003, VOLS 1 AND 2 | 2003年
关键词：
H.263; wireless; video coding; burst error; rate control;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Conventional video coding schemes such as H.261/H.263 have reduced performances over a wireless link. In this paper, two methods are proposed to increase video coding performances over a wireless link. The first method is based on the dynamic working set of motion vectors. It detects and recovers errors occurring in motion vector fields. The second method improves performances by changing the video coding granularity to the macro block level. An implementation scheme for the second method is presented. The constraints that rate control imposes on the discard threshold are discussed and the corresponding performance model is provided.
引用
收藏
页码：293 / 298
页数：6
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