Hi people. I´m trying to do something and I can´t realize what I´m doing wrong. I have a mask, that has been done with a colour threshold macro from a RGB picture. I want to know the values of RGB channels used on that pictures to apply them in another picture. So, I obtained a selection from the mask, and whith this ROI I measured min and max values of RGB from the original pictures. When I use those min a max to colour threshold the original picture, I got a completely different selection/mask. I hope you can help me. Sorry for english!!!