A #GIMP WIP inspired by a Aleksandr Prokudin (npub1fw7…dva0) LibreArts article.
It's a Total Ink Coverage display filter! A simple algorithm that shows how much CMYK ink is being used in a particular part of the image. This is useful to knwo for printing, as different paper has different ink limits.
I want to integrate it with the soft-proofing pop-over as well, but this is a nice start.