Improved Likelihood Function in Particle-based IR Eye Tracking

R. Satria, J. Sorensen, R. Hammoud, Dan Witzner Hansen

Research output: Conference Article in Proceeding or Book/Report chapterBook chapterResearchpeer-review


In this paper we propose a log likelihood-ratio function of foreground and background models used in a particle filter to track the eye region in dark-bright pupil image sequences. This model fuses information from both dark and bright pupil images and their difference image into one model. Our enhanced tracker overcomes the issues of prior selection of static thresholds during the detection of feature observations in the bright-dark difference images. The auto-initialization process is performed using cascaded classifier trained using adaboost and adapted to IR eye images. Experiments show good performance in challenging sequences with test subjects showing large head movements and under significant light conditions.
Original languageEnglish
Title of host publicationImproved Likelihood Function in Particle-based IR Eye Tracking
Publication date2005
ISBN (Print)0-7695-2372-2
Publication statusPublished - 2005


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