I have a cv::Mat A, which has CV_32F. However it holds integer values like 1,2....100. I want to form a mask of same size as A.
But the mask must contain zeros if A(x,y) not equal to 5 (say). The mask must contain ones if A(x,y) equal to 5 (say).
I want to later use it as ROIs.
// you will have a much simpler construct,
// this is just for demonstration
Mat_<float> A(3,3); mf << 1,5,5,2,5,5,1,2,3;
// now use a simple MatExpr to get a mask:
Mat mask = (A == 5);
// show results:
cerr << A << endl;
cerr << mask << endl;
------------------------------
[1, 5, 5;
2, 5, 5;
1, 2, 3]
[0, 255, 255;
0, 255, 255;
0, 0, 0]
