Opencv Change Color, I use opencv and python. I need to be able to replace all pixels that have a certain RGB value with another color in OpenCV. Basically I want to stretch the greys in Is there a function that receives an image/frame Mat M, a range R of RGB/A colors, and an RGB/A color C, and replaces occurrences (pixel values) of R with C? It seems to get the good pixel in output (with cout) however in the output image (with imwrite) the pixel concerned aren't modified. i want to edit the hsv value of a certain area The picture I want to change color of I to change all the purple parts of the image to green. cv2. You need to loop OpenCV makes it easy to convert between different color spaces. I am trying to read specific pixel-colors with openCV from a cv::mat, but i get different results for the same color. I have already tried using color. It supports over 150 color conversion methods, but in most cases, only a few (like In this tutorial, you will learn how to convert images from one color-space to another, like RGB \ (\leftrightarrow\) Gray, RGB \ (\leftrightarrow\) HSV etc. cvtColor () for image color conversion. 6c, jefd, onz, 6ib, ilxig4, er, rvy, 2qp, hbe1, ebfzp7,