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Journal of Electronic Imaging

Novel intermode decision algorithm in H.264/AVC
Author(s): Liquan Shen; Zhi Liu; Zhao-Yang Zhang; Leirui Wang; Guozhong Wang
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Paper Abstract

H.264/AVC employs variable-size motion compensation with multiple reference frames that can significantly improve the coding performance compared with the previous video coding standards. However, the computational complexity of the H.264/AVC encoder increases dramatically due to the various size modes used. One of the most challenging problems in implementing this encoder is mode decision. We propose a novel intermode decision algorithm (NIMDA) to reduce the candidate mode set, which utilizes two basic elements, the sum absolute difference (SAD) of each 4×4 block from the initial test of the inter-16×16 and the texture characteristic. Simulation results show that our proposed algorithm can save about 46% in computational complexity, with negligible loss of coding efficiency.

Paper Details

Date Published: 1 January 2008
PDF: 8 pages
J. Electron. Imaging. 17(1) 013006 doi: 10.1117/1.2841715
Published in: Journal of Electronic Imaging Volume 17, Issue 1
Show Author Affiliations
Liquan Shen, Shanghai Univ. (China)
Zhi Liu, Shanghai Univ. (China)
Zhao-Yang Zhang, Shanghai Univ. (China)
Leirui Wang, Shanghai Univ. (China)
Guozhong Wang, Shanghai Univ. (China)

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