相关系数法就是寻找使得目标窗口和搜索窗口中相关系数取得最大值的点作为同名点的方法，即它是用相关系数作为匹配测度的-Correlation coefficient method is to find the target window and makes the search window correlation coefficient as a method to obtain the maximum point of the same name point that it is the correlation coefficient as a measure of the match