I have imported an image using imread - which creates a matrix of the image. The size of such a matrix is n x m x p. I think p refers to the colour information of each cell. I am using imshow to display these matrices.
Parts of the image, that are white, have the value of 255. How can I change the colour of a specific cell to a colour of my choice? I have tried stuff like X(1,10) = 230, but that doesnt seem to do anything. Could someone please help? Thanks,