Template matching function, that is, in one figure, find another one in similar places in the chart
CV_EXPORTS_W void matchTemplate( InputArray image, InputArray templ,OutputArray result, int method, InputArray mask = noArray() );
the input image is an image,
templ template image is input,
result is stored in a result matrix, the matrix may be determined by the maximum and minimum function minMaxLoc
image matching method is a method of:
CV_TM_SQDIFF matching squared difference method, the best match is zero, the greater the value the poorer the match
CV_TM_SQDIFF_NORMED normalized square difference matching
CV_TM_CCORR correlation matching method using multiplication operations, the greater the value the better the match
CV_TM_CCORR_NORMED normalized correlation matching method
CV_TM_CCOEFF correlation matching method, the best match is 1, -1 represents the worst match
CV_TM_CCOEFF_NORMED normalized correlation coefficient matching
After the completion of general image matching, the result will be normalized:
normalize(result, result, 0, 1, NORM_MINMAX, -1, Mat());