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Novel intermode decision algorithm in H.264/AVC

[+] Author Affiliations
Liquan Shen

Shanghai University, Key Laboratory of Advanced Display and System Application, Ministry of Education, Shanghai, 200072, China

Zhi Liu

Shanghai University, Key Laboratory of Advanced Display and System Application, Ministry of Education, Shanghai, 200072, China

Zhaoyang Zhang

Shanghai University, Key Laboratory of Advanced Display and System Application, Ministry of Education, Shanghai, 200072, China

Leirui Wang

Shanghai University, Key Laboratory of Advanced Display and System Application, Ministry of Education, Shanghai, 200072, China

Guozhong Wang

Shanghai University, Key Laboratory of Advanced Display and System Application, Ministry of Education, Shanghai, 200072, China

J. Electron. Imaging. 17(1), 013006 (March 13, 2008). doi:10.1117/1.2841715
History: Received October 21, 2006; Revised August 11, 2007; Accepted August 30, 2007; Published March 13, 2008
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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.

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© 2008 SPIE and IS&T

Citation

Liquan Shen ; Zhi Liu ; Zhaoyang Zhang ; Leirui Wang and Guozhong Wang
"Novel intermode decision algorithm in H.264/AVC", J. Electron. Imaging. 17(1), 013006 (March 13, 2008). ; http://dx.doi.org/10.1117/1.2841715


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