OpenCV: How to convert CV_8UC1 mat to CV_8UC3

Question

How to convert CV_8UC1 Mat to CV_8UC3 with OpenCV?

Mat dst;
Mat src(height, width, CV_8UC1, (unsigned char*) captureClient->data());
src.convertTo(dst, CV         


        

Answer 1

I've found that the best way to do this is:

cvtColor(src, dst, COLOR_GRAY2RGB);

The image will look the same as when it was grayscale CV_8UC1 but it will be a 3 channel image of type CV_8UC3.