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Real-time calibration-free autonomous eye tracker

: Klefenz, F.; Husar, P.; Krenzer, D.; Hess, A.


Douglas, S.C. ; IEEE Signal Processing Society:
IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2010. Proceedings. Vol.1 : 14-19 March 2010, Dallas, Texas, USA
Piscataway/NJ: IEEE, 2010
ISBN: 978-1-4244-4296-6
ISBN: 978-1-4244-4295-9
International Conference on Acoustics, Speech and Signal Processing (ICASSP) <35, 2010, Dallas/Tex.>
Conference Paper
Fraunhofer IDMT ()

In several fields of medicine, transportation and security the instantaneous gaze direction of a person under supervision is of crucial importance. We developed a contactless stereoscopic video-based eye tracker which works without any individual calibration. In real time it delivers information about the gaze direction frame by frame. The introduced algorithms are designed for computing the gaze direction within image acquisition time that is only limited by the hardware setup. The cameras are integrated into front-end modules by means of FPGA (programmable logic) circuits for image processing. Computation of the gaze direction is based on the spatial position of the pupil which is detected by a five-dimensional Hough transform. The system works under ambient light conditions whereas additional infrared illumination can be used to become independent of ambient light.