(This series later turned into the "Melt into You" series of prints, first shown at Bridges Pécs, Hungary in 2010. The third print was dropped from the series to meet space requirements... 4 square images fit better than 5.)
Mathmap is a program that lets you manipulate images with formulas. After battling the learning curve (software, xtools, plugins, filters, settings, faulty transparency handling in mathmap cocoa) I finally got some nice results. Here's the cover image from Naked Geometry, done with a Droste effect.