OpenCV rgb value for cv::Point in cv::Mat

Question

I\'ve looked at different questions already here on StackOverflow, but none seems to helps. What I want to do is quite simple: I have a cv::Point and I need to

Answer 1

That's really easy. However the documentation of OpenCV is good at hiding the simple answers.

Here is example code:

cv::Mat3b image = imread(filename);
cv::Point point(23, 42);
cv::Vec3b template;
template[0] = 128; template[1] = 12; template[2] = 64;

const cv::Vec3b& bgr = image(point);
if (bgr[0] == template[0] && bgr[1] == template[1] && bgr[2] == template[2])
   std::cout << "Colors match!" << std::endl;

There are probable better ways of dealing with the cv::Vec, but I forgot. See also the OpenCV Cheat Sheet.