The "wavelet decompose" filter is a great plug-in for doing just that. You need a way to separate out lines and fine detail from the predominant colour regions. However, the result will be as you suspected, very pixelated around areas where one colour is transitioning to another.
#Reduce color palette converter android
In the past I remember seeing some android apps which did quantisation plus the bonus features, but I suspect they had resolution limitations among others - last but not least, it was only available on a phone, and PC (Windows) would definitely be preferable.Īs Paolo Gibellini and jsbueno said, the Gimp image mode conversion can calculate an optimized colour palette for as many colours as you want, or can use a colour palette that you specify. I don't think GIMP implements custom/optimal quantization out of the box. I have searched for GIMP plugins but I have not found anything. I would like free (open source) software to do this.
(For example, plain dithered pixels would be impossible to paint by hand) (As a bonus, it would be great if the result could be manipulated in interesting ways so that if the boundaries of the colours were traced onto paper, then filled in by good-old-fashioned paint, the result would look more natural, or interesting - anything other than pixellated basically. I would like those colours to be automatically optimised for the photo in question. I want to manipulate a photo so that the number of colours is reduced significantly (to say 15-50 colours which I would specify the number).
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