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Any idea how this image was generated?
Posted: 2016-04-23T15:59:19-07:00
by fluxer
https://en.fotolia.com/id/55047809
I'm interested in generating similar type images using my own parameters. Anyone have any insight as to what algorithms are used?
Re: Any idea how this image was generated?
Posted: 2016-04-24T02:48:00-07:00
by snibgo
It looks like an interference (or "beat frequency") pattern, which happens when two images have a similar or identical repeated pattern at slightly different frequencies, and these are added (or multiplied or whatever) together.
In this case, the pattern has two main elements: 22 radials from the centre, and a large number of concentric rings, of thicknesses that increase with the radius. The interference is from the rings.
When we have a grayscale interference pattern, this can be coloured (eg with "-remap") in yellow through green and cyan to blue.
Instead of creating radial lines and rings, we can create vertical and horizontal lines, then "-distort polar" or "-distort arc".