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Front. Inform. Technol. Electron. Eng.  2010, Vol. 11 Issue (8): 637-644    DOI: 10.1631/jzus.C0910561
    
An adaptive fast search algorithm for block motion estimation in H.264
Cong-dao Han*,1,2, Ji-lin Liu1,2, Zhi-yu Xiang1,2
1 Institute of Information and Communication Engineering, Zhejiang University, Hangzhou 310027, China 2 Zhejiang Provincial Key Laboratory of Information Network Technology, Hangzhou 310027, China
An adaptive fast search algorithm for block motion estimation in H.264
Cong-dao Han*,1,2, Ji-lin Liu1,2, Zhi-yu Xiang1,2
1 Institute of Information and Communication Engineering, Zhejiang University, Hangzhou 310027, China 2 Zhejiang Provincial Key Laboratory of Information Network Technology, Hangzhou 310027, China
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摘要： Motion estimation is an important issue in H.264 video coding systems because it occupies a large amount of encoding time. In this paper, a novel search algorithm which utilizes an adaptive hexagon and small diamond search (AHSDS) is proposed to enhance search speed. The search pattern is chosen according to the motion strength of the current block. When the block is in active motion, the hexagon search provides an efficient search means; when the block is inactive, the small diamond search is adopted. Simulation results showed that our approach can speed up the search process with little effect on distortion performance compared with other adaptive approaches.
关键词： Adaptive hexagon and small diamond search (AHSDS);  Search pattern;  Mean absolute difference (MAD);  Optimal point    
Abstract: Motion estimation is an important issue in H.264 video coding systems because it occupies a large amount of encoding time. In this paper, a novel search algorithm which utilizes an adaptive hexagon and small diamond search (AHSDS) is proposed to enhance search speed. The search pattern is chosen according to the motion strength of the current block. When the block is in active motion, the hexagon search provides an efficient search means; when the block is inactive, the small diamond search is adopted. Simulation results showed that our approach can speed up the search process with little effect on distortion performance compared with other adaptive approaches.
Key words: Adaptive hexagon and small diamond search (AHSDS)    Search pattern    Mean absolute difference (MAD)    Optimal point
收稿日期: 2009-03-14 出版日期: 2010-08-02
CLC:  TN919.81  
基金资助: Project  (Nos.  60505017  and  60534070)  supported  by  the  National Natural Science Foundation of China 
通讯作者: Cong-dao HAN     E-mail: hancongdao@163.com
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引用本文:

Cong-dao Han, Ji-lin Liu, Zhi-yu Xiang. An adaptive fast search algorithm for block motion estimation in H.264. Front. Inform. Technol. Electron. Eng., 2010, 11(8): 637-644.

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http://www.zjujournals.com/xueshu/fitee/CN/10.1631/jzus.C0910561    或    http://www.zjujournals.com/xueshu/fitee/CN/Y2010/V11/I8/637

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