You can get some idea of the workflow here: http://chaoticafractals.com/manual/tutorials/basic_gnarl http://chaoticafractals.com/manual/tutorials/basic_gnarl I

You can get some idea of the workflow here: http://chaoticafractals.com/manual/tutorials/basic_gnarl http://chaoticafractals.com/manual/tutorials/basic_gnarl It's a combination of choosing the colour palette, selecting a set of mathematical transformations (and their associated weights), etc.. Chaotica is iterated function system software: http://en.wikipedia.org/wiki/Iterated_function_system http://en.wikipedia.org/wiki/Iterated_function_system