- #1
DaveC426913
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- TL;DR Summary
- I have a grid of tiles filled with exactly 6 colours in a gradient from 1 to 6. I want to add "noise" to it using some sort of randomization technique.
I am designing the pattern of a quilt my wife is making. The quilt is made of 15x20 squares of exactly six shades of blue - dark at one end to light at the other end.
The gradient will be "noisy". I want to experiment with that noise.
I am exploring Photoshop to do this visually, but it doesn't deal well with limited palettes. In particular any filters such as "add noise" are not available to an image with an indexed (i.e. less than 16-bit) palette.
Left: no noise:
Right: noise done manually:
I am thinking of some sort of mathematical procedure that spits out a value from 1 to 6 into every cell of a 15x20 table.
There are a few ways I can see this varying, but mostly it involves the "spread" - whether colour "4" is smeared across only bands with colours "3" and "5", or whether it is smeared all the way from, say band 2 to 6. That would presumably affect the parameters of the randomizer.
I am looking for suggestions on how to randomize this gradient above and beyond my fruitless attempts in Photoshop.
The gradient will be "noisy". I want to experiment with that noise.
I am exploring Photoshop to do this visually, but it doesn't deal well with limited palettes. In particular any filters such as "add noise" are not available to an image with an indexed (i.e. less than 16-bit) palette.
Left: no noise:
Right: noise done manually:
I am thinking of some sort of mathematical procedure that spits out a value from 1 to 6 into every cell of a 15x20 table.
There are a few ways I can see this varying, but mostly it involves the "spread" - whether colour "4" is smeared across only bands with colours "3" and "5", or whether it is smeared all the way from, say band 2 to 6. That would presumably affect the parameters of the randomizer.
I am looking for suggestions on how to randomize this gradient above and beyond my fruitless attempts in Photoshop.
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