OpenCV 模板匹配，matchTemplate方法使用，实测非常不错 平方差匹配法(SQDIFF) 归一化平方差匹配法(SQDIFF NORMED) 相关匹配法(TM CCORR) 归一化相关匹配法(TM CCORR NORMED) 相关系数匹配法(TM COEFF) 归一化相关系数匹配法(TM COEFF NORMED)(OpenCV template matching, matchTemplate method used, the measurement is very