Create random colors shapes that are not repeated nearby?

Hello, i have made previousñy this filter

color squares with photos

In this filter the background of each square is randomly choosen fr om variations, the problem I see with this is that the random color done this way can be repeated as shown on the presets, and you could have maybe 2 or 3 red squares together, and the same with other colors

What I want to know is if there could be a way to make that the random color variation in bomber can be cuatomized in some way so that the probability of the same color appearing again nearby the same color is reduced to a minimum or that is does not happen

For example like this image wh ere all the colors are different, I mean that nearby colors are not repeated ( the blues are not the same)

2 - COLORFUL TINY PERLIN NOISE I have seen also that it can be used a very tiny colorful perlin noise particles to feed the bomber for color choosing but does not work as expected or as I want, maybe I do it wrong

Here is a example of colorful perlin noise, but in this case is big dots, and not tiny ones

Here is something I threw together using the checker, generating the grayscale checker using Perlin noise scaled to 0. No lookup in this version. This brings up the issue, the more "random" the pattern, the less likely you can guarantee that adjacent colors will not match. Let me know if you want the snippet.

And one more, this one using perlin noise as random values for R, G, B.

It really is an idea that requires more of a standard filter approach, not procedural.

If not map script, looping, that's insane However the last RGB experiment I tried was not too bad, with some tweaking, usable, don't like the colors, do another variation. Also the color values can be weighted to favor one color over the others, and saturation/brightness can be dealt with as well. Colors could be limited to certain values, like with cutouts/steps. Here's an example with color weighting.

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I do not mean and want to have different colors and that they are not repeated, as in the example on first post the colors are repeated and is good what it can't be is that when there for example red in one square then no one of the 4 neighboring square can be red.

Ah ok. I think then Rick has the right idea.

Although it would be a nice little extra challenge since you currently have a bunch of random colors now... what if you just want 8 colors?

Here is the filter that I used to generate random checker colors from November 8, 2015 10:44 pm.

Perlin Color 4.ffxml

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Skybase wrote: Although it would be a nice little extra challenge since you currently have a bunch of random colors now... what if you just want 8 colors?

YES, maybe this is more difficult that I may have thought and not easy to do with reduced amount of colors that you can choose. it should be able to custom choose this 8 colors

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Rick Duim wrote: Here is the filter that I used to generate random checker colors fr om November 8, 2015 10:44 pm

Thanks for the filter and for trying, I have tried it and it gives a very good result wh ere all the squares seems to be different to each other and there is no one color repeated, but the problem I see with this method is to choose the range of colors that I may want, as the results includes all the possible colors with the RGB values given, and using the variations sliders gives many variations but always with the same RGB range, and you can´t define what colors to be included.

As the result is very good technically for detecting neighbor non-repeated colors as shown here below but without color customization is not good, will see if using this way, there can be a way to choose colors in some way

Note to SpaceRay. The presets in Perlin Color 4 show you how you can control the color to some degree. Another approach would be a perlin lookup into an 8 color gradient, I am going to give that one a shot. If that works as planned, you can control the colors yourself.

... and the filter itself. Any gradient could be used instead of the 8 color one I've created here.

Random Gradient Color Checker.ffxml

Elevation gradient in this case does the same.

I'd argue it's not that different.

I get how the filter works. A lot of work. Thanks

As for mapmakers, here is the 4 Color Theorem. From reading it, simple maps can be done in 3 colors. And apparently, modern mapmakers usually use more than 4 colors for maps of any complexity, in practice.

this thread seems to be interesting and useful to learn, thanks

I think that maybe this thread could be related to this other thread in some way as both are about being able to distribute bomber result in a non repeating way

Bomber plus - Would be possible to avoid repeat a source image loaded?