Changing to a CYMK colourspace

Good morning,

Is there a way I can change SNAP from using the RGB colourspace to a CYMK one so that I can properly display SAR amplitude change images?

Currently if I display the old image in red and new in blue it results in a magenta mix, not the standard grey mix. I assume there must be a way to do this that I have missed since it is standard practice in the SAR community.


There is currently only RGB and HSV colour models.