C++ – Copy an cv::Mat inside a ROI of another one


I need to copy a cv::Mat image (source) to an ROI of another (Destination) cv::Mat image.

I found this reference, but it seems that it does not work for my case.
Do you have any pointers how could I do this using the OpenCV C++ interface?

Best Solution

OpenCV 2.4:

src.copyTo(dst(Rect(left, top, src.cols, src.rows)));

OpenCV 2.x:

Mat dst_roi = dst(Rect(left, top, src.cols, src.rows));