title: Robust high-speed binocular 3D eye movement tracking system using a two-radii eye model.
abstract: Existing video-based eye movement tracking systems measure three-dimensional eye orientations by assuming the eye is a sphere that rotates around its center at a fixed radius. We found this model inaccurate. We have developed a system that uses a two-radii eye model, which assumes that the eye rotates around two different centers with different radii horizontally and vertically. We found this two-radii model more accurate in estimating the three-dimensional eye positions than the traditional one-radius eye model.
authors.affiliation: Department of Computer & Information Science, Brooklyn College of City University of New York, Brooklyn, NY 11210, USA. danjie@nsi.brooklyn.cuny.edu
authors.forename: Danjie
authors.initials: D
authors.lastname: Zhu
authors.forename: Mikhail
authors.initials: M
authors.lastname: Kunin
authors.forename: Theodore
authors.initials: T
authors.lastname: Raphan
mesh_terms: D000465:Algorithms; D004585:Electrooculography / Q000295:instrumentation* / Q000379:methods*; D005123:Eye / Q000033:anatomy & histology*; D005133:Eye Movements; D005403:Fixation, Ocular; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000295:instrumentation* / Q000379:methods*; D015233:Models, Statistical; D008962:Models, Theoretical; D009068:Movement; D015203:Reproducibility of Results; D014741:Video Recording; D014785:Vision, Ocular