For those of you who have been looking for free, open source eye tracking, 
I know the options out there are very limited.

You may already be familiar with Derrick Parkhurst's (et al) project called 
openEyes. http://thirtysixthspan.com/openEyes/index.html  
However this project has only been working on Linux.
I've taken the post-processing (not real-time) visual spectrum version, and 
converted it to work with windows.

I’ve uploaded my version along with comprehensive instructions and camera 
tips to my website:
http://joelclemens.colinr.ca/eyetrack/

I tested this software and outputted a video using scrap parts that I had 
from old projects. Testing this project cost me 0$ thanks to the free 
nature of openEyes. The video has been uploaded to google video, and is 
also viewable from my website.

If I work with this algorithm further, I’ll post my results to this 
listserv.

Thanks
-Joel Clemens
http://joelclemens.colinr.ca

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