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A geometric approach to remote eye tracking |
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| Authors: | Arantxa Villanueva Gintautas Daunys Dan Witzner Hansen Martin Böhme Rafael Cabeza André Meyer Erhardt Barth |
| Affiliation: | 1. Electrical and Electronics Engineering Department, Public University of Navarre, Navarre, Spain 2. Department of Electronics, Siauliai University, Siauliai, Lithuania 3. Technical University of Denmark/IT University, Copenhagen, Denmark 4. Institute for Neuro- and Bioinformatics, University of Lübeck, Lübeck, Germany |
| Abstract: | This paper presents a principled analysis of various combinations of image features to determine their suitability for remote eye tracking. It begins by reviewing the basic theory underlying the connection between eye image and gaze direction. Then a set of approaches is proposed based on different combinations of well-known features and their behaviour is evaluated, taking into account various additional criteria such as free head movement, and minimum hardware and calibration requirements. The paper proposes a final method based on multiple glints and the pupil centre; the method is evaluated experimentally. Future trends in eye tracking technology are also discussed. |
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