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Algorithm for indexed image mode

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Algorithm for indexed image mode
lesolorzanov Offline
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#1
Scheme  07-27-2023, 11:54 AM
I've always been marveled at GIMP and very happy that it's so accessible.

I was wondering if I can ask, I'd like to know how indexing works and creation of a palette, it happens so quickly that I was wondering if anyone could tell me (even if roughly) how this indexing works. Or even point me to a an article or the name of the creator of this particular algorithm.

I attach an image of what I am talking about.

   
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Ofnuts Offline
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#2
07-27-2023, 02:05 PM
Source code is here: https://gitlab.gnome.org/GNOME/gimp/-/bl...-indexed.c
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PixLab Offline
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#3
07-27-2023, 03:07 PM
(07-27-2023, 02:05 PM)Ofnuts Wrote: Source code is here: https://gitlab.gnome.org/GNOME/gimp/-/bl...-indexed.c

How fantastic is open source!
A simple link and the OP got a lot more than expected Big Grin
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denzjos Offline
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#4
07-27-2023, 03:32 PM
Some information about palettes and indexed colors :
https://www.scantips.com/palettes.html
https://en.wikipedia.org/wiki/Indexed_color
https://en.wikipedia.org/wiki/List_of_8-...e_graphics
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