YeahTuna's video: Reaction Diffusion in Photoshop

This is a repost from 1 year ago on my Vimeo page. Reaction-Diffusion can be seen anywhere in nature, from patterns on fish, coral, to zebras, and anything spotted. Doing this in photoshop is extremely easy and an old trick. You just have to have an initial image, then apply a set of filters that "cause a reaction", sharpen, highness, levels, edge detect... anything that brings contrast, and then have it diffuse, for example blur, median, min/max, and otherwise so many options. I also recommend experimenting with new chains of reaction-diffusion patterns such as edge detect - threshold - median to get completely different patterns. Hope this video is useful!