Convert single channle image to 3 channel image C++ / OpenCV

Question

Im using openCV C++

Im need to convert a single channel image to 3 channels image. So i can use this: cvCvtColor(result,gray,CV_BGR2GRAY);

I cannot do that because the result img is a single channel image. Any ideas?

Answer 1

You should use CV_GRAY2BGR instead of CV_BGR2GRAY.