H.323视频会议系统中视频编解码子系统设计若干问题的研究  

Study on Video Coding Subsystem Design of H.323 Video Conference System

作　　者：王中元[1] 胡瑞敏[1] 傅佑铭[1] 边学工[1] 

机构地区：[1]武汉大学国家多媒体软件工程研究中心,武汉430072

出　　处：《电子与信息学报》2007年第7期1596-1599,共4页Journal of Electronics & Information Technology

摘　　要：该文研究了H.323视频会议系统中的视频编解码子系统设计中的运动估计、码率控制等问题,介绍了每个问题产生的背景,并对提出的算法原理和算法步骤进行了详细描述,对每个问题在解决方法上都有所改进或创新。研究成果应用到实际的H.323视频会议系统中,大幅度地提高了系统的视频性能技术指标。This paper presents eight problems of video encoding and decoding subsystem design in H.323 video conference system, such as motion estimation, rate control etc. For each problem, after introducing their background, the paper finds their solutions and algorithm steps are described in detail. Some technical renovations are discussed also. These results are incorporated into a real-life H,323 system which achieves outstanding video performance improvement.

关 键 词：视频会议 视频编解码 视频通信 

分 类 号：TN919.85[电子电信—通信与信息系统]