摘要
针对实时多媒体在 IP网络上的传输 ,首次提出了两种基于实时传输协议的 MPEG视频源的建模 :一种是考虑不同类型帧之间的相关性以及 I帧的特殊性 ,对 I帧采用 Gamma分布建模 ,对P、B帧采用相对于 I帧的合成回归模型分别建模 ;另一种是分别对 I、P、B帧采用 Gamma分布建模 .通过计算机模拟实验 。
As to the transportation of real-time multimedia on IP network, two models of MPEG video source based on RTP are presented. One considers the relation between I frame and P, B frames, and Gamma distribution is used to model I frame, while P, B frames are modeled with compound regressive model. The other uses Gamma distribution to model I,P,B frames respectively. Simulation indicates the validity of the two models, and comparison is made between them.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2002年第1期53-57,共5页
Journal of Beijing University of Posts and Telecommunications
关键词
图像通信
实时传输协议
视频源建模
MPEG
Image communication systems
Mathematical models
Multimedia systems
Real time systems
