03-07-2018, 08:49 PM
If you do a colorcube analysis on your image, there are a good number of colours, nearly 17,000
see: https://i.imgur.com/MvKcy5h.jpg
I would try the g'mic plugin from http://www.gmic.eu and the color curves filter.
The interface looks like this https://i.imgur.com/mtSA5Xx.jpg
Using the HSV option and pulling the Saturation curve right down and adjusting the Value curve gets this https://i.imgur.com/wyqVQrp.jpg
Not as many colors as I would like but getting there: https://i.imgur.com/m0LSawF.jpg
see: https://i.imgur.com/MvKcy5h.jpg
I would try the g'mic plugin from http://www.gmic.eu and the color curves filter.
The interface looks like this https://i.imgur.com/mtSA5Xx.jpg
Using the HSV option and pulling the Saturation curve right down and adjusting the Value curve gets this https://i.imgur.com/wyqVQrp.jpg
Not as many colors as I would like but getting there: https://i.imgur.com/m0LSawF.jpg