基于相关系数的相关匹配算法的研究，从减少相关系数计算运算量和减少搜索点数量这两个方面对以相关系数作为相似性度量准则的相关匹配算法进行改进-Based on the correlation coefficient of correlation matching algorithm, the correlation coefficient calculated from the reduction of computation and reduce the number of search poin