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基于自适应搜索模板的快速运动估计算法

DOI: 10.11834/jig.20091102

Keywords: 运动估计,自适应,搜索模板

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Abstract:

为了降低快速运动估计的计算复杂度,避免小菱形搜索算法带来的局部最优点问题,提出了自适应搜索模板的估计算法。该算法在搜索时根据SAD值的变化快慢和相邻帧之间时间相关性自适应选择搜索模板。实验表明,使用该算法编码,码流大小与使用菱形搜索算法和六边形搜索算法差距为±0.6%,搜索点数为菱形算法的72%~77%,六边形算法的83%~86%。在减少搜索点数的情况下有效地避免了局部最优点问题。

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