For G'MIC 2.9.8 and later, don't use this but use "Filters -> G'MIC-Qt -> Artistic -> Comic Book" (You have to have updated G'MIC filters by "ctrl-R"). For GIMP 2.8 ...
For some reason the auto Github generated source code of this filter is outdated. So please use the updated source code I provided here named photo_2_cartoon_source ...
GIMP 3.0 is finally here, and it's perfect timing really – with creatives everywhere yearning to save money on expensive photo editing and digital art software subscriptions. GIMP has long been our ...