Folks -
I now have a compact and reasonably efficient implementation of wavelet transforms in Squeak. I based it on Mac Cody's article in Dr. Dobb's Journal, so as to be able to leverage off his documentation and examples. Those can be found at...
http://www.dfw.net/~mcody/fwt/fwt.html
I will issue it as a squeak update in a week or so, but if you want an advance copy, send me a message offline.
- Dan