This reminds me a bit of the octree quantization implementation I hacked up to improve speed of generating Racket's animated gifs. * https://github.com/racket/

This reminds me a bit of the octree quantization implementation I hacked up to improve speed of generating Racket's animated gifs. * https://github.com/racket/racket/commit/6b2e5f4014ed95c9b8839248d8ee249edbb4f073 https://github.com/racket/racket/commit/6b2e5f4014ed95c9b883... * https://github.com/racket/racket/commit/f2a1773422feaa4ec112e97467c6a671a3123008 https://github.com/racket/racket/commit/f2a1773422feaa4ec112...