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采用菱形搜索算法对各种视频测试序列中运动矢量的研究,基于H.264视频编码标准提出了一种快速块匹配运动估计算法。它是以图像中相邻宏块之间的时空相关性为前提,结合了分布式菱形搜索,预测搜索和中止阈值等一系列技术而提出的,试验结果表明该算法在运算速度方面优于菱形搜索,而获得与全搜索相当的峰值信噪比。
A diamond search algorithm for motion vectors in various video test sequences is proposed. A fast block matching motion estimation algorithm is proposed based on H.264 video coding standard. Based on the spatiotemporal correlation between adjacent macroblocks in image, this paper proposes a series of techniques such as distributed diamond search, predictive search and abort threshold. The experimental results show that the proposed algorithm is superior to diamond in terms of computing speed Search, and get full search comparable peak signal to noise ratio.