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I have a image in that suppose i want to change the pixel colour ,how i can do it.assume i have peppers image,in that if i want to replace a pixel value say 5 by yellow colour or some other colour,please tell how to proceed
5 in which color channel and which color space? In general it's
rgbImage(row, column, 1) = 255; rgbImage(row, column, 2) = 255; rgbImage(row, column, 3) = 0;
for yellow (though I suspect you knew this already). If you have a mask (a binary image of where the 5's occur), it's somewhat different.