gimp-elsamuko

# Calculate Saturation

This plugin calculates the saturation from a picture with four different saturation algorithms:

  1. (max-min)
  2. (max-min) / sum
  3. like HSV: (max-min) / max
  4. like HSL: (max-min) / (max+min)

Download here:
https://github.com/elsamuko/gimp-elsamuko/tree/master/plugins/elsamuko-saturation

Build and install it with:

gimptool-2.0 --install elsamuko-saturation.c

You’ll find it then under Colors → Components → Calc Saturation.

Example:

The resulting b/w image can be used as layer mask to filter saturation. For example the script elsamuko-naturalize below uses this plugin to give oversaturated images a more natural impression:
(cc) by Edgar Chambon 94

If you like it, hug someone.