Patent ID: 7533988
Filing Date: 2009-05-19
Classification: A61B,G06K

Abstract:
1. A line-of-sight detection device using a distance image sensor, comprising: a camera equipped with a light time-of-flight distance image sensor in which image sensors are two-dimensionally arranged; a light source generating a pulsed light; wherein said light time-of-flight distance image sensor generates distance information with respect to each pixel of said image sensors by measuring a delay time of said pulsed light generated by said light source; information acquisition means for obtaining, from output of the distance image sensor, image information of a pupil center and a corneal reflection center of a subject, and distance information from the distance image sensor to the pupil center or the corneal reflection center; and computation means for determining a three-dimensional position of the pupil center of the subject from the image information and distance information.