hi. good time.I have a gray scale image with a bounding box in it.I want to calculate intensity for bounding box.the resolution of my picture is 720*750 and my rectangle is: rectangle(400,210,70,50).do you have any idea to calculate the intensity for this region of my image?Thanks a lot for you're help.
you can use cv::mean() for this:
Mat image = ....
Mat roi( image, Rect(400,210,70,50) );
Scalar m = mean(roi);
Heartiest congratulations.Exactly what I want.if I want to compare the mean intensity of 2 ROI's,When I do this:
Mat roi(frame, Rect(405, 210, 70, 50));
Scalar m = mean(roi);
Mat roi2(frame, Rect(365, 185, 150, 100));
Scalar M = mean(roi2);
if (mean (roi) > mean (roi2))
cout << "louis89" << endl;
my code can't bulid because of sign <.but for == or != it work.why?
Asked: 2017-06-12 05:45:20 -0600
Seen: 6,572 times
Last updated: Jun 12 '17
