This filter "quantizes" an image (the user chooses the number of colours) then fills each separated colour area with a gradient chosen randomly from a set (the user enters a "discriminant" text, used by Gimp to extract the subset of gradients wanted).
The filter by default makes use of the discriminant "mandelbulb_" which determines the extraction of all gradients of the Mandelbul_nnn set present in the user's active gradients.
If you do not have it and you want to try my preferred set for this filter, I attach it below.
Here the filter:
Attachment:
DIEGO_DRAWING_StyleP.7z [4.72 KiB]
Downloaded 166 times
Here my gradients set: (I have many others)
Attachment:
Here an example of outcome:
Attachment:
2021-02-07 13-44-19 thomas-millot-nJTE_b347jU-unsplash, with gradients mandelbulb_ on 18 areas.jpeg [ 2.39 MiB | Viewed 3346 times ]
Please remember: each gradient used is selected randomly, hence practically you will almost never get the same outcome you already got