Eyetracker 1.0 (1994):
This system was the first actual set put up. As you can see it is very basic. A lot of improvements had to be made , especially concerning the design (i.e. cooling modules, loose cable connections)
Eyetracker 2.0 (1995)
The system is located inside an external box and connected to the PC by an ISA-interface card. This design was the first one based on an industrially manufactured board. This step had become necessary due to minimization of size. Additionally the resolution compared to version 1.0 was doubled.
Eyetracker 5.0 1995 (final Eyetracking System):
The system is located directly on an ISA-card and it is the fastest of all my Eyetracking systems so far. Version 5.0 detects the eye at a resolution of 512x256 at a rate of 25 per second. You see the two programmable arrays, which are able to calculate with about 800 MIPS
To see a demonstration have a look at the AVI-Video (700 kb, AVI ). It shows the process of pattern recognition online at a resolution of 120 x 90 dots. Due to the high compression rate of the AVI-format the image is a bit blurry.