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Edge Feature Based Fast Mode Decision Algorithm for H.264 Intra Prediction

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【Author】 GAO Wei, LI Hua, ZHANG Shufang, HOU Ling, ZHANG Shujun(School of Electronic Information Engineering, Tianjin University, Tianjin 300072, China)

【机构】 School of Electronic Information Engineering Tianjin University； School of Electronic Information Engineering Tianjin University； Tianjin 300072 China Tianjin 300072 China Tianjin 300072 China Tianjin 300072 China Tianjin 300072 China；

【Abstract】 A fast intra mode decision algorithm is proposed in this paper to reduce the complexity of H.264 encoder. The proposed algorithm adopted the pre-processing method based on edge feature in pictures to filter out some impossible prediction modes. Context information and pre-computed threshold are used to determine whether it is necessary to check the DC mode. This method is able to get rid of most of candidate modes so that only 66—150 modes are left for the final mode decision, instead of 592 modes in the case of full search （FS） method of H.264. Simulation results demonstrate that the coding time of the proposed algorithm falls down 71.7⁰/₀ compared with FS method, while the performance loss is trivial compared with FS mode decision scheme.更多还原

【关键词】 H.264； fast mode decision； intra prediction；
【Key words】 H.264； fast mode decision； intra prediction；

【文献出处】 Transactions of Tianjin University ,天津大学学报(英文版) , 编辑部邮箱 ,2006年05期

【分类号】TN919.81
【下载频次】52

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