Sample PBM data files

Simple test files

test-t test-house

The files test-t.pbm.gz and test-house.pbm.gz are designed to be simple tests for you to use. They correspond to the quadtrees test-t.quad and test-house.quad. Note that your labelling system does not need to be the same.

For those who are more interested, here are some larger data sets:

UNSW Logo

UNSW Logo

The school's logo. Available in 128x128, 256x256 or 512x512.

Quadtree fractals

Here are some of the more interesting quadtree fractals I have come up with for the COMP2031 assignments. If you have an interesting one, mail me at: waleed@cse.unsw.edu.au.

If you are interested in the source for quad2pbm, then it's in java (JDK 1.1). You can have a look at that here.

Each of the below images is generated at 512x512, then reduced to a 128x128 thumbnail. The full image is available by clicking on the thumbnail image. The source (for quad2pbm) is also included should you be interested.

Satellite Squares

Tree 1 Source

Triangle Explosion

Tree 2 Source

Diamond Rose

Tree 3 Source

The Infinite Rug

Tree 4 Source
WARNING: The above is a bit of a hack. It relies on the fact that pixels are white by default, and that if the recursion goes so deep that the size is less than one pixel, it is left as white, not black.

Arabesque

Source
Mohammed Waleed Kadous
Last modified: Sat May 15 12:52:41 EST 1999