互相关法的实现。一般多用于图像配准之中，能够求两幅具有角度偏移图像的互相关值大小。互相关值能够应用于众多方面。-Implementation of Cross Correlation Method. Generally used for image registration, can be obtained with two angle offset image cross-correlation value size. The cross-correlation value can be applied to a number of aspects.