一种改进的方向性菱形运动估计算法

Improved Directional Diamond Algorithm

针对方向性菱形搜索算法搜索不精确的情况,提出一种改进的算法。通过设置阈值来判断宏块的运动类型,依据运动类型来选取模板:若为剧烈运动,使用方向性菱形模板,若为缓慢运动,使用小菱形模板。对使用方向性模板时的搜索策略进行了改进,以保证有更好的图像质量。实验表明,该方法取得了较为理想的结果。

In view of the imprecision of directive diamond search algorithm,it proposed an improved algorithm.It set a threshold value to judge the motion type,then selected the template according to the motion type: if the motion blocks are violent,directional diamond could be used,and if not,the small diamond could be used.Finally,an improvement was made to the search strategy which used the directive template that would guarantee the better picture quality.The experiment showed that the method has obtained a more i...