| 一种H.264帧内预测模式快速选择算法 |
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| 引用本文： | 赵金,张有会,王志巍,杨会云,霍利岭,高申友.一种H.264帧内预测模式快速选择算法[J].燕山大学学报,2010,34(1):56-60. |
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| 作者姓名： | 赵金 张有会 王志巍 杨会云 霍利岭 高申友 |
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| 作者单位： | 1. 河北师范大学,数学与信息科学学院,河北,石家庄,050016
2. 河北省军区,通信处,河北,石家庄,050011 |
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| 摘 要： | H.264使用率失真优化提高了编码效率,但也增加了计算复杂度,不利于编码的实时实现。本文分析了H.264中计算复杂度较高的帧内预测模式选择部分,提出一种快速的帧内预测模式选择算法。根据隶属度函数预先判断宏块类型,通过求取各像素点的方向得到4×4块的纹理方向,由此确定候选模式,减少预测模式的数量。实验结果表明,在图像性能和码率基本保持不变的情况下,编码时间平均下降了约38%,大大提高了编码速度。
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| 关 键 词： | H.264 帧内预测 模式选择 纹理方向 |
A fast mode decision algorithm for intra prediction of H. 264 |
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| ZHAO Jin,ZHANG You-hui,WANG Zhi-wei,YANG Hui-yun,HUO Li-ling,GAO Shen-you.A fast mode decision algorithm for intra prediction of H. 264[J].Journal of Yanshan University,2010,34(1):56-60. |
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| Authors: | ZHAO Jin ZHANG You-hui WANG Zhi-wei YANG Hui-yun HUO Li-ling GAO Shen-you |
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| Institution: | 1.Mathematics and Information Science College;Hebei Normal University;Shijiazhuang;Hebei 050016;China;2.Department of Communications;Hebei Military Region;Hebei 050011;China |
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| Abstract: | H.264 adopts Rate Distortion Optimization (RDO) to enhance coding efficiency at the cost of a very high computational complexity,and it is difficult to be real-timely implemented.By analyzing the factors of the computational complexity of the intraprediction mode decision,a fast algorithm for the intra-prediction mode decision is proposed.First,the type of the macro-block is decided based on the fuzzy membership function,and then the block texture direction is estimated.The number of prediction modes and th... |
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| Keywords: | H 264 intra prediction mode decision texture direction |
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