计算机工程 ›› 2008, Vol. 34 ›› Issue (24): 225-227.doi: 10.3969/j.issn.1000-3428.2008.24.078

• 多媒体技术及应用 • 上一篇    下一篇

可伸缩视频码流的熵编码组合优化方法

赵志杰,刘增玉,张立志,李 云,单大伟   

  1. (哈尔滨商业大学计算机与信息工程学院,哈尔滨 150028)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-12-20 发布日期:2008-12-20

Combination Optimized Method of Entropy Coding for Scalable Video Bitstream

ZHAO Zhi-jie, LIU Zeng-yu, ZHANG Li-zhi, LI Yun, SHAN Da-wei   

  1. (School of Computer and Information Engineering, Harbin University of Commerce, Harbin 150028)
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-12-20 Published:2008-12-20

摘要: 分析可伸缩视频编码系统中由嵌入式零树编码生成的码流特征,提出一种利用最优预测估计思想将算术编码和游程编码相结合,实现熵编码优化的新方法。实验结果表明,该方法比传统自适应算术编码的效率提高了10%左右,达到了进一步压缩数据的目的。

关键词: 视频码流, 可伸缩, 熵编码, 嵌入式零树编码

Abstract: This paper analyzes features of bitstream generated by Embedded Zerotree Wavelet(EZW) in scalable video coding system, and presents a new method that combines arithmetic coding and run length coding though optimal predictor to optimize entropy coding. Experimental results show that the coding efficiency average increases about 10% by using the new method than using traditional arthmetic, and it obtains the purposes of further data compression.

Key words: video bitstream, scalable, entropy coding, Embedded Zerotree Wavelet(EZW)

中图分类号: