Colorpalette from image: nice to have

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Assessment

Difficulty
5/5
Estimated time
Over a week
Newbie friendliness
35/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Stale
Tech stack
julia
Domain
data-visualization

Research direction

Start with _assets/scripts/getColorPalette.jl and review the referenced Julia approach using Clustering, Colors, Random, and Images. Determine the appropriate built-in ColorSchemes API and dependency scope from that example. Done means ColorSchemes provides a supported way to obtain color palettes from images, with behavior matching the intended use case.

Written by the indexing model from the issue text.

Description

I do have this script to obtain colorpalettes from images (like the ones for Taylor Swift :D, https://twitter.com/drob/status/1459259255312236547 ). However, probably it will be nice to have a built-in function in ColorSchemes for this. Just in case this is of interest, here the relevant code (probably not the best approach, but it works).

using Clustering, Colors, Random
using Images: load, RGB, channelview, permutedims

function getColorPalette(image; ncolors = 5)
        img_CHWa = channelview(image)
        #img_CHW = permutedims(img_CHWa, (1,3,2))
        testmat = reshape(img_CHWa, (3, size(image)[1]*size(image)[2])) #input shape
        sol = kmeans(testmat, ncolors)
        csize = counts(sol) # get the cluster sizes
        colores = sol.centers # get the cluster centers, dominat colors
        indxc = sortperm(csize)
        colores, indxc
end
Dominant language
Julia
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Forks
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