>>140
what problem did I post? I don't know who I am.
>>142
In some cases ey could be right. For instance, in a screen cap where desktop background is all #00DDDD. If you look at the image and there is a light layer of noise present in areas that should all be constant, then that is a sign. If there are objects in reality that have the same consistent color pattern all the way down to the least significant bit, then it will show there as well. There are algorithms that target regions of the image with high gradient to avoid this problem.