模板匹配主要是采用基于灰度信息的匹配算法，其中是统计模板与原图像的相关系数，得到最大值的地方，就是相似度最大的地方，也就是成功地找到了匹配的像素点。具体的算法如下。其中，im_matched为原图像，im_template为模板图像。MaxR为最大相似度系数。-Template matching matching algorithm based on gray-scale information, which is the the statistical template with the correlation coefficient of the original image to obtain the maximum value of the place is the biggest similarity place is to find matching pixels. The specific algorithm is as follows. Wherein, im_matched original image, im_template the template image. MaxR maximum similarity coefficient.