摘要
对各种常用的块匹配搜索算法进行了仿真比较,依据不同算法,对运动大小不同的块运动预测精度也不同,提出了根据块的运动大小来选用不同搜索算法的分级搜索法,在搜索时间和重建图像质量两方面都达到了很好的效果。
Sorts of block-based search strategies are simulated and compared in this paper.Since strategies are different in the motion estimation precision of large-motion and small-motion blocks,a separate search algo-rithm is presented,which selects different search algorithm according as the block motion vectors are large or small.It achieves a good effect in both the search time and the reconstruction image quality.
出处
《电视技术》
北大核心
2002年第5期9-11,共3页
Video Engineering
关键词
块匹配搜索算法
分级搜索法
图像编码
block matching
motion estimation
separate search algorithm
image quality
