Ran Jed’s Model through the two images I’m using currently to do my tests:
Jed’s RGB Saturation Based Model - Threshold 0.15
Thomas’s HSV Control Based Model - Threshold & Hue Twist Controls Tweaked
Thomas’s HSV Control Based Model - Threshold 0.15
Note that with default parameters, the model is almost the same than the HSV model of @matthias.scharfenber.
I can get close to Jed’s with mine using the Hue Twists and fiddling a bit with the Threshold but Jed’s default to a much more pleasing output, i.e. less magenta, the Model is simpler, more elegant, faster and easier to implement.
Cheers,
Thomas