NDLI: Covert monitoring of the point-of-gaze

Content Provider	IEEE Xplore Digital Library
Author	Eizenman, M. Model, D. Guestrin, E.D.
Copyright Year	2009
Description	Author affiliation: Dept. of Electrical and Computer Engineering, Dept. of Ophthalmology and Vision Sciences, and Institute of Biomaterials and Biomedical Engineering, University of Toronto, ON, Canada (Eizenman, M.) \|\| Dept. of Electrical and Computer Engineering and Institute of Biomaterials and Biomedical Engineering, University of Toronto, ON, Canada (Guestrin, E.D.) \|\| Dept. of Electrical and Computer Engineering, University of Toronto, ON, Canada (Model, D.)
Abstract	Gaze estimation systems use calibration procedures that require active subject participation to estimate the point-of-gaze accurately. Consequently, these systems do not support covert monitoring of visual scanning patterns. This paper presents a novel gaze estimation methodology that does not use calibration procedures that require active user participation. This methodology uses multiple infrared light sources for illumination and a stereo pair of video cameras to obtain images of the eyes. Each pair of images is analyzed and the centers of the pupils and the centers of curvature of the corneas are estimated. These points, which are estimated without a personal calibration procedure, define the optical axis of each eye. To estimate the point-of-gaze, which lies along the visual axis, the angle between the optical and visual axes is estimated by a procedure that minimizes the distance between the intersections of the visual axes of the left and right eyes with the surface of a display while subjects look naturally at the display (e.g., watching a video clip). Simulation results demonstrate that for a subject sitting 75 cm in front of an 80 cm × 60 cm display (40″ TV) the RMS error of the estimated point-of-gaze is 17.8 mm (1.3°).
Starting Page	551
Ending Page	556
File Size	526973
Page Count	6
File Format	PDF
ISBN	9781424438778
DOI	10.1109/TIC-STH.2009.5444437
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-26
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cornea Covert gaze monitoring Eyes Calibration-free gaze estimation Displays Calibration Light sources Remote gaze estimation Image analysis Lighting Infrared imaging Cameras Monitoring
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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