摘要： 针对运动矢量的方向性，结合经典的快速算法，提出一种改进的十字搜索算法。设计具有方向性的搜索模板，并利用搜索起始点预测、中止准则、搜索模板、辅助点搜索等技术来减少搜索点数。在H.264实验平台的仿真结果表明，该算法在保持峰值信噪比不变的情况下，能有效提高搜索速度。

关键词: 运动估计, 搜索模板, 峰值信噪比

Abstract: The paper proposes an improved cross search algorithm, considering the direction of moving vector. The algorithm designs a directional search pattern, and adopts a series of skills, which are composed of prediction of initial search point, half-stop criteria, search pattern and auxiliary search points to reduce search points. Extensive experiments conducted based on the H.264 encoding platform show that the improved algorithm can increase the searching-rate while keeping the similar PSNR.

Key words: Motion Estimation(ME), search pattern, PSNR

中图分类号: 

• TP301.6