| Edge Feature Based Fast Mode Decision Algorithm for H. 264 Intra Prediction |
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| 作者姓名： | 高伟 李华 张淑芳 侯玲 张树军 |
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| 作者单位： | School of Electronic Information Engineering Tianjin University，School of Electronic Information Engineering Tianjin University，School of Electronic Information Engineering Tianjin University，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 |
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| 摘 要： | The emerging video coding standard H.2641],provides the state-of-the-art video coding techniquesto meet a wide range of applications. Among thosetechniques, intra prediction is regarded as one of themain factors that contribute to the success ofH.2642]. The rate distortion optimization (RDO)technology has been employed in H.264 for intra pre-diction mode selection to achieve good codingefficien-cy, which makes encoder extremely complex. Efforts have been made in developing fast H.264intra…
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| 关 键 词： | H. 264 高速模式设计 边缘提取 预报 |
| 收稿时间： | 2005-11-08 |
Edge Feature Based Fast Mode Decision Algorithm for H.264 Intra Prediction |
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| GAO Wei,LI Hua,ZHANG Shufang,HOU Ling,ZHANG Shujun.Edge Feature Based Fast Mode Decision Algorithm for H. 264 Intra Prediction[J].Transactions of Tianjin University,2006,12(5):383-386. |
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| Authors: | GAO Wei LI Hua ZHANG Shufang HOU Ling ZHANG Shujun |
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| 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 71.7% compared with FS method, while the performance loss is trivial compared with FS mode decision scheme. |
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| Keywords: | H 264 fast mode decision intra prediction |
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