Bresen-Jam draws all the lines that could possibly exist of equal colour. Originally I could only scan in four directions but eventually I devised a method using the Bresenham algorithm (which is how pixelated lines are drawn on your computer at high speed).
Images below are links to pdf files that were generated from this project, I left the images at their original scan size so one can appreciate the scale of information one can acquire.
Four directional pixel scan experiments:
Bresen-Jam pixel scan experiments:
Source code package for Bresen-Scan (Updated 25/07/06)
The latest improvement to this sketch addressed memory issues and will now allow far larger and far more complex images. The live drawing is not visible however but it does keep you posted on what row is being iterated.