摘要
介绍了视频会议系统中构造多路视频混合器的基本原理,提出了一种在视频会议系统中视频混合器对混合图像进行二次编码时重新利用原始码流信息的方法,减少了运算量,提高了编码效率。
This paper introduces the principium of constructing video mixer in video conference system. In re-encoding the mixing picture in video mixer, a method of using the useful information drawn from already compressed bitstream is proposed, which can reduce the calculation and improve the encoding efficiency greatly.
出处
《计算机工程》
CAS
CSCD
北大核心
2007年第11期219-221,共3页
Computer Engineering
关键词
视频会议
视频混合器
运动估计
运动矢量
Video conference
Video mixer
Motion estimation
Motion vector
