I've put together a cheap eye tracking system using a 10 dollar web camera, Ogama, and ITU Gaze Tracker. At the moment, the tracking hardware is a total hack and held together with duct tape, zip ties, and solder. After putting the apparatus together this morning, I did some initial tests. Given the very early prototype nature of the hardware, the calibration is a bit off. But the results are impressive, regardless.
Video showing saccades and fixations
Video showing spotlight highlighting
Image with saccades and fixations
Heatmap overlay - here it is very obvious that the calibration is skewed to the left
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