Esoteric programming language coded with images
See the original posting on Boing Boing
Piet is an esoteric programming language where the programs are encoded as images and resemble abstract paintings. Spot-on Mondrians (pictures) are the hook, but a wide range of pixelated styles are possible; the logic of the program can be exposed in the image.
Prime Number Generator
Sylvain Tintillier provides a method of generating prime numbers using Piet. Figuring out how it works is easy, he says, “Just look at the bitmap!”