Patent ID: 9426447
Filing Date: 2016-08-23
CPC Classification: G06F,H04N

Claim Text:
1. A gaze tracking apparatus, comprising: a calibration performing unit to perform calibration between at least two wide angle cameras, a narrow angle camera, and an image playback apparatus, and to calculate user position information associated with a user; an image information input unit to receive input of image information through the at least two wide angle cameras; a first information detector to detect eye position information from the image information; an image acquiring unit to acquire an eye image by performing panning, tilting, and focusing of the narrow angle camera, based on the eye position information and the user position information; a second information detector to detect pupil center information regarding a center of a pupil from the eye image; a third information detector to detect corneal reflected light information regarding corneal reflected light reflected from an eye of the user; and a gaze position calculating unit to calculate gaze position information from the pupil center information and the corneal reflected light information, wherein the image acquiring unit detects a pupil candidate region by applying a filter algorithm to the image information from which a reflected light is eliminated.