| 基于AVS的UMHexagonS算法研究与改进 |
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| 引用本文： | 白洪成,王姚,闫凡勇.基于AVS的UMHexagonS算法研究与改进[J].数字社区&智能家居,2010,6(10):2442-2443. |
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| 作者姓名： | 白洪成 王姚 闫凡勇 |
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| 作者单位： | 上海海事大学信息工程学院;广东工业大学计算机学院; |
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| 摘 要： | 运动估计是视频压缩中最重要的环节。该文在分析UMHexagonS算法的基础上,进行了两方面的改进。首先,针对它在高效的起始点预测后陷入搜索冗余的可能,增加了一个提前终止判断。另外,对算法中的大六边形搜索模板进行了改进以减少搜索的点数,在保持原有图象质量的情况下有效的节省了运动估计时间。通过对各种测试序列的实验证明,在保证PSNR和码率变化不大的前提下,可以有效地降低4%-25%的运动估计时间。
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| 关 键 词： | UMHexagonS 运动估计 AVS 搜索模板 |
Optimization on UMHexagonS Algorithm Based on AVS |
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| BAI Hong-cheng,WANG Yao,YAN Fan-yong.Optimization on UMHexagonS Algorithm Based on AVS[J].Digital Community & Smart Home,2010,6(10):2442-2443. |
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| Authors: | BAI Hong-cheng WANG Yao YAN Fan-yong |
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| Affiliation: | 1.School of Information & Engineering;Shanghai Maritime University;Shanghai 200135;China;2.Guangdong University of Technology;Computer Science;Guangzhou 510006;China |
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| Abstract: | Motion estimation(ME) is vital to video compression.In this paper,based on Analyzing the UMHexagonS algorithm and give two improvement measures.firstly,an early term ination is added in the case that it enters the redundan t search after the initial search point prediction w ith good effects.secondly,,an optimized algorithm is proposed based on big hexagon,which saved the search point and saves ME time effectively without quality loss.Experimenting with some typical video sequences proves that,this ME time ... |
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| Keywords: | UMHexagonS motion estimation AVS Search Templates |
| 本文献已被 CNKI 维普 等数据库收录！ |
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