亚象素运动估值快速算法

高精度的匹配和补偿可以减少预测误差，提高视频图像的压缩效果。文中提出了一种亚象素精度视频运动估值的快速算法，根据半象素精度运动估值的中间结果，直接推算出更高精度的运动估值。该算法为高精度亚象素运动估值的研究提供了算法保证。

Quick Algorithm of Sub-pixel Accuracy Motion Estimation

The prediction error can be decreased by incorporating high accuracy estimation and compensation, and the performance of compressed video can be improved. A quick algorithm of sub-pixel accuracy video motion estimation was proposed in this paper. After half-pel accuracy motion estimation, a high accuracy motion estimation can be calculated with the intermediate results. According this quick algorithm, high accuracy sub-pixel motion estimation can be obtained.