自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

您目前所在的位置:首页 - 期刊简介 - 详细页面

中南大学学报(英文版)

Journal of Central South University

Vol. 17    No. 4    August 2010

[PDF Download]    [Flash Online]

    

Screen image sequence compression method utilizing adaptive block size coding and hierarchical GOP structure
WU Xing(武星)1, MEI Liang(梅亮)2, XI Qi(袭奇)3, ZHANG Shen-sheng(张申生)3, CHEN Yan-wei(陈延伟)4

1. School of Electronic, Information and Electrical Engineering, Shanghai Jiao Tong University,
Shanghai 200240, China;
2. Department of Electrical Engineering and Computer Science, University of Michigan, Michigan 48109, USA;
3. Joint Institute of University of Michigan-Shanghai Jiao Tong University, Shanghai Jiao Tong University,
Shanghai 200240, China;
4. College of Information Science and Engineering, Ritsumeikan University, Shiga 5258577, Japan

Abstract:To compress screen image sequence in real-time remote and interactive applications, a novel compression method is proposed. The proposed method is named as CABHG. CABHG employs hybrid coding schemes that consist of intra-frame and inter-frame coding modes. The intra-frame coding is a rate-distortion optimized adaptive block size that can be also used for the compression of a single screen image. The inter-frame coding utilizes hierarchical group of pictures (GOP) structure to improve system performance during random accesses and fast-backward scans. Experimental results demonstrate that the proposed CABHG method has approximately 47%-48% higher compression ratio and 46%-53% lower CPU utilization than professional screen image sequence codecs such as TechSmith Ensharpen codec and Sorenson 3 codec. Compared with general video codecs such as H.264 codec, XviD MPEG-4 codec and Apple’s Animation codec, CABHG also shows 87%-88% higher compression ratio and 64%-81% lower CPU utilization than these general video codecs.

 

Key words: screen image sequence; compression; adaptive block size; hierarchical GOP structure; intra-frame coding; inter-frame coding

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
版权所有:《中南大学学报(自然科学版、英文版)》编辑部
地 址:湖南省长沙市中南大学 邮编: 410083
电 话: 0731-88879765 传真: 0731-88877727
电子邮箱:zngdxb@csu.edu.cn 湘ICP备09001153号