一种八边形的混合快速运动估计算法

One kind of mix octagon algorithm for fast motion estimation

根据图像序列的运动矢量的时空相关性和中心偏移特性,并结合零运动判断,设计研究了一种八边形模式搜索[1]。其在中等或大运动块的情况下相对于FS、TSS、DS、MVFAST能够得到更高的精确度,又由于对非静止块采用了起始点预测,减少了搜索的时间,同时可以大大提高搜索速度。

Based on the space-time correlation of video sequence motion vector and center-biased character,this paper unifies the zero movement judgment.A new kind of octagon pattern search1 is proposed.The proposed algorithm can obtain a higher precision than FS,TSS,DS,MVFAST,when the block movement is strong and due to the initial prediction to the non-static block.It also reduces the search time at the same time,and therefore enhances search speed greatly.