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。
关键词:
视频会议,
视频混合器,
运动估计,
运动矢量
Abstract: 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.
Key words:
Video conference,
Video mixer,
Motion estimation,
Motion vector
中图分类号:
刘紫燕;陈霖周廷. 视频会议系统中视频混合器的二次编码优化[J]. 计算机工程, 2007, 33(11): 219-221.
LIU Ziyan; CHEN Linzhouting. Optimization Design of Video Mixer During Re-encoding in Videoconference System[J]. Computer Engineering, 2007, 33(11): 219-221.