03-02-2018, 08:39 AM
Just to round things off:
While I go for a bespoke palette, limiting colours by using a selection or from a gradient.
Gimp does have provision for reducing colours.
The relevant bit from Gimp help is
...quote...Interval Even setting “Number of colors” to maximum, the number of colors can’t exceed 10000 in the palette. RGB images have much more colors. Interval should allow to group similar colors around an average and so get a better palette. This problem doesn’t exist with 256 colors indexed images: Interval to 1 allows picking 256 colors (this option is grayed out with more than 256 colors indexed palettes too).
To get a representative palette from your photograph, adjust the value of the interval until you get one that suits.
While I go for a bespoke palette, limiting colours by using a selection or from a gradient.
Gimp does have provision for reducing colours.
The relevant bit from Gimp help is
...quote...Interval Even setting “Number of colors” to maximum, the number of colors can’t exceed 10000 in the palette. RGB images have much more colors. Interval should allow to group similar colors around an average and so get a better palette. This problem doesn’t exist with 256 colors indexed images: Interval to 1 allows picking 256 colors (this option is grayed out with more than 256 colors indexed palettes too).
To get a representative palette from your photograph, adjust the value of the interval until you get one that suits.