opencv match template

match.cpp

void match(Mat &a, Mat &b)
{

	Mat r;
	matchTemplate(a, b, r, CV_TM_SQDIFF_NORMED);
	double minVal; double maxVal; Point minLoc; Point maxLoc;
	Point matchLoc;

	minMaxLoc(r, &minVal, &maxVal, &minLoc, &maxLoc, Mat());
	
	rectangle(a, maxLoc, Point(maxLoc.x + b.cols, maxLoc.y + b.rows), Scalar(255));
	imshow("1", r);
	imshow("2", a);
}