title: A low cost human computer interface based on eye tracking.
abstract: This paper describes the implementation of a human computer interface based on eye tracking. Current commercially available systems exist, but have limited use due mainly to their large cost. The system described in this paper was designed to be a low cost and unobtrusive. The technique was video-oculography assisted by corneal reflections. An off-the shelf CCD webcam was used to capture images. The images were analyzed in software to extract key features of the eye. The users gaze point was then calculated based on the relative position of these features. The system is capable of calculating eye-gaze in real-time to provide a responsive interaction. A throughput of eight gaze points per second was achieved. The accuracy of the fixations based on the calculated eye-gazes were within 1 cm of the on-screen gaze location. By developing a low-cost system, this technology is made accessible to a wider range of applications.
authors.affiliation: Dept. of Electr. & Comput. Eng., Manitoba Univ., Winnipeg, MB, Canada. umhileyj@cc.umanitoba.ca
authors.forename: Jonathan B
authors.initials: JB
authors.lastname: Hiley
authors.forename: Andrew H
authors.initials: AH
authors.lastname: Redekopp
authors.forename: Reza
authors.initials: R
authors.lastname: Fazel-Rezai
mesh_terms: D000465:Algorithms; D001698:Biomedical Engineering; D003365:Costs and Cost Analysis; D004585:Electrooculography; D053483:Eye Movement Measurements / Q000706:statistics & numerical data; D005133:Eye Movements; D006801:Humans; D008328:Man-Machine Systems; D009988:Orthoptics; D011680:Pupil; D014584:User-Computer Interface; D014741:Video Recording