【摘要】 针对运动预测过程中单一匹配准则的不足提出了一种联合匹配准则,能较好地处理小目标的灰度渐变。基于运动预测过程中不断进行的像素块匹配运算提出了一种新的像素抽样算法,该算法使得运算量大大减少,匹配精度逼近全像素匹配算法。这两种技术的综合应用使得整个运动预测效率有较大改善。更多还原

【Abstract】 In view of the shortage of one matching criterion in motion estimation, a new united matching criterion is presented in this paper, and a new pixel sampling algorithm is presented in accordance of continuous matching computation of pixel blocks in the course of motion estimation. Besides the quantity of computation is greatly reduced by this algorithm, its matching precision approaches to that of whole-pixel algorithm. When applying these two techniques synthetically, it shows that the efficiency of the global motion estimation can be largely improved.更多还原