| 一种快速实现H.264运动估计的方法 |
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| 引用本文： | 韩立强,杨波.一种快速实现H.264运动估计的方法[J].光电工程,2006,33(8):94-97. |
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| 作者姓名： | 韩立强 杨波 |
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| 作者单位： | 中国科学院长春光学精密机械与物理研究所,吉林,长春,130033;中国科学院长春光学精密机械与物理研究所,吉林,长春,130033;中国科学院研究生院,北京,100039 |
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| 摘 要： | 本文提出一种快速实现H.264运动估计的算法。该算法利用视频图像中存在大量空/时域冗余这一特点,在运动估计过程中引入预判空间相关性和时域稳定性的方法,节省了大量不必要的计算步骤。试验结果表明,该算法运动估计时间仅为JM84的30.3%,峰值信噪比(PSNR)仅降低1.1%,码率平均增加3.95%。
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| 关 键 词： | H.264 运动估计 算法 视频压缩 |
| 文章编号： | 1003-501X(2006)08-0094-04 |
| 收稿时间： | 2005-06-24 |
| 修稿时间： | 2005-09-06 |
Fast motion estimation algorithm in H.264 |
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| HANG Li-qiang,YANG Bo.Fast motion estimation algorithm in H.264[J].Opto-Electronic Engineering,2006,33(8):94-97. |
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| Authors: | HANG Li-qiang YANG Bo |
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| Affiliation: | 1. Changchun Institute Of Optics, Fine Mechanics and Physics, the Chinese Academy of Sciences, Changchun 130033, China; 2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China |
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| Abstract: | A new fast Motion Estimation algorithm in H.264 is proposed to significantly improve the time efficiency. The characteristic of video sequences that exists great deal spatial/temporal redundancy is utilized in the algorithm. It imported early-terminate strategy of predicting the spatial homogeneity and temporal stability and can reduce lots of computational quantity. Experiment results show that proposed algorithm can achieve a reduction of 70% ME time on average, with a small average PSNR loss of 1.1%, and approximately 3.95% bit rate increases compared with the original H.264 reference software JM84. |
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| Keywords: | H 264 |
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