Testing of my eye tracking library running in Flash 10. The red circle represents the perceived position of my eyes, and the green line is just a line that moves with a speed that is based on the circle position (when the circle is on top, the line moves up; when the circle is in the middle, the line stays; when the circle is at the bottom, the line moves down).

It uses a face tracking algorithm for initial face detection, then some other color-separating code to find where the eye is looking at in real-time. An initial calibration is necessary (the code must know when the eye is looking at the top and at the bottom of the screen; then it can find where you're looking at, in between those two).

The face detection used an AS3 port of OpenCV, based on the work of Ohtsuka Masakazu (maaash.jp/as3/as3marilena-object-detection-in-as3/) and Mario Klingemann (quasimondo.com/archives/000687.php) with a bunch of modifications for speed and varying levels of accuracy (nothing too crazy though, just better for our specific use case).

Part of my daily work at firstborn.com.

More information
zehfernando.com/2011/eye-tracking-testing/

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