Non-contact eye gaze tracking system by mapping of corneal reflections

Abstract

In this paper, we suggest a new system to estimate the direction of a user's eye gaze. Our system consisted of five IR LEDs and a CCD camera. The IR LEDs, which are attached to the corners of a computer monitor, make glints on the surface of the cornea of the eye. If the user sees the monitor, the center of a pupil is always in a polygon that is made by the glints. Consequently, the direction of the user's eye gaze can be computed without computing the geometrical relation between the eye, the camera and the monitor in 3D space. Our method is comparatively simple and fast. We introduce the method and show some experimental results.