北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2004, Vol. 27 ›› Issue (2): 66-71.

• 论文 • 上一篇    下一篇

MPEG4信源建模

李 征, 吴伟陵   

  1. 北京邮电大学 信息工程学院, 北京 100876
  • 收稿日期:2003-01-06 出版日期:2004-02-28
  • 作者简介: 李 征(1978—),男,博士生。 E-mail:buptlzhn@sina.com

MPEG4 Video Traffic Model

LI Zheng, WU Wei-ling   

  1. Information Engineering School, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2003-01-06 Online:2004-02-28

摘要: 对MPEG4编码方式的信源建模方法进行了研究。比较了采用基于场景复杂性的马尔可夫调制的自相似过程和基于数据结构的自相似过程2种方法建模MPEG4的性能优劣。同时对文献[1]中的一阶马尔可夫建模小波系数的方法进行了改进。

关键词: 运动图像专家组, 边缘概率匹配, 图片组, 小波

Abstract: In this paper, two popular approaches are implemented and compared in modeling MPEG4 video traffic. One is the Markov modulated self-similar process model based on decomposition according to Scene complexity, the other is the structurallymodulated self-similar process. At the same time, the way to generate new wavelet coefficients in [2] has been improved in order to get more accurate second-order character.

Key words: MPEG4, marginal matching, GOP, wavelet

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