| 一种基于二维直方图的H.264/AVC快速帧内预测判决算法 |
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| 引用本文： | 谢晶,贾克斌.一种基于二维直方图的H.264/AVC快速帧内预测判决算法[J].电子与信息学报,2005,27(7):1053-1057. |
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| 作者姓名： | 谢晶 贾克斌 |
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| 作者单位： | 北京工业大学电子信息与控制工程学院,北京,100022;北京工业大学电子信息与控制工程学院,北京,100022 |
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| 基金项目： | 北京市教委科技发展计划项目 |
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| 摘 要： | 最新的视频压缩标准H.264/AVC具有极高的压缩率,但由于其算法极其复杂,编码时间较长,无法达到实时应用的要求。该文针对其帧内预测算法的特点,提出了一种基于二维直方图的快速帧内预测算法。该算法在进行帧内预测之前先对宏块预判,从两种帧内预测模式中选择一种,从而减少了算法的复杂度,提高了压缩速度。实验结果表明,所提的算法在码率只有少许增加的情况下,编码速度提高了16.26%,PSNR值基本不变。
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| 关 键 词： | 编码 H.264/AVC 帧内预测 二维直方图 |
| 文章编号： | 1009-5896(2005)07-1053-05 |
| 收稿时间： | 2004-11-29 |
| 修稿时间： | 2004年11月29 |
A Fast Intra-frame Prediction Algorithm Based on Two-Dimensional Histogram for H.264/AVC |
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| Xie Jing,JIA Ke-bin.A Fast Intra-frame Prediction Algorithm Based on Two-Dimensional Histogram for H.264/AVC[J].Journal of Electronics & Information Technology,2005,27(7):1053-1057. |
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| Authors: | Xie Jing JIA Ke-bin |
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| Affiliation: | School of Electronic Information & Control Engineering, Beijing University of Technology, Beijing 100022, China |
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| Abstract: | H.264/AVC is the newest video coding Standard with high compression efficiency. Because it will take a long time to code with extremely complex algorithm, it can not achieve real-time application. In this paper, according to the characteristic of intra-frame prediction algorithm, a fast algorithm based on 2D-histogram is proposed. This algorithm will predict every macroblock before coding, then selecting one of the two prediction modes. Therefore, the complexity of algorithm and coding time are reduced dramatically. Experimental results show that the coding speed of proposed algorithm is 16.26% faster than that of H.264/AVC, with a little bit increase, and the PSNR is invariable. |
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| Keywords: | H 264/AVC |
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