摘要
文章结合分布式视频会议模型(DVSM)进行了IP视频会议子系统的划分和设计,并使用RationalRose工具结合MPEG-4算法以视频数据流为例具体给出各层子系统中主要类的描述。然后阐述了MPEG-4视频编码的关键概念和算法,分析了MPEG-4视频码流的逻辑语法和语义,并结合MPEG-4编解码库分析VOP编码实现的程序流程。
This paper divides and designs subsystems of IP video conferencing system based on Distributed Video confer-encing System Model(DVSM),and then designs main classes of video data flow object on each subsystem using RationalRose tool.Then fundamental conceptions and algorithms on MPEG-4video coding are mainly described.Syntax and semantics of MPEG-4visual bitstream are analyzed,and then with an emphasis on the coding of vop,it presents the program flow of im-plementing the coding of vop.
出处
《微电子学与计算机》
CSCD
北大核心
2004年第2期66-69,共4页
Microelectronics & Computer
基金
国家十五计划项目
