title: Dealing with pixels in contours (OpenCV)?
body: <p>I have retrieved a contour from an image and want to specifically work on the pixels in the contour. I need to find the sum (not area) of the pixel values in the contour. OpenCV only supports rectangle shaped ROI, so I have no idea how to do this. cvSum also only accepts complete images and doesn't have a mask option, so I am a bit lost on how to proceed. Does anyone have any suggestions on how to find the sum of the values of pixels in a specific contour? </p>