Reaction-Diffusion texture synthesis is a procedural method based on the chemical process known as reaction-diffusion.

Reaction-Diffusion
$\bullet$ chemical mechanism for pattern formation.
$\bullet$ first introduced by Alan Turing in 1952.
$\bullet$ possible mechanism by which cells of an embryo arrange themselves into patterns.
$\bullet$ two or more chemicals diffuse through an embryo and react with each other until the chemical concentrations reach some stable state.
$\bullet$ cells of different types may then develop in different positions based on these chemical concentrations, resulting in patterns.