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How can I create a random pixelated pattern?


Question

I was wondering how I'd go about just taking a couple of specific colors, then having something make a random pixelated picture with those colors.

I was wanting to take the colors from my current avatar and use those colors to make a banner. I tried taking my avatar, making it a PS Pattern, but when I applied the pattern, it looked too repetitive. I want the colors to be randomly placed.

2014/01/13
1
3
1/13/2014 12:12:00 AM

As people have commented, coding would yield the best solution. You can get a good approximation using Image > Adjustments > Gradient Map...

Fill a canvas with 400% noise:

enter image description here

Filter using Pixelate > Mosaic...

enter image description here

Increase the saturation:

enter image description here

And re-tone the image with Gradient Map:

enter image description here

Result:

enter image description here

2014/01/12
11
1/12/2014 10:48:00 PM