Generate all colour permutations of an image
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Hello,
I am looking to take the mondrian art image below and generate all the possible colour permutations. Does anyone have advice as to how to go about this?
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/720734/image.png)
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Accepted Answer
Chunru
on 25 Aug 2021
x = imread("image.png");
image(x)
% unique colors in the image
uc = unique(reshape(x, numel(x)/3, 3), 'rows');
nc = size(uc, 1);
fprintf('There are %d unique colors\n', nc);
p = perms(1:nc);
fprintf('There are %d permutations of colors\n', size(p, 1));
x2 = reshape(x, numel(x)/3, 3);
for i=1:size(p,1)
xp = x2;
for j=1:nc
idx = all(x2 == uc(j,:), 2);
for k=1:3
xp(idx, k) = uc(p(i,j), k);
end
end
xp = reshape(xp, size(x));
image(xp);
drawnow
pause(0.05)
end
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