Apparatus and method for eye tracking
AssigneeElectronics and Telecommunications Research Institute
InventorsHee Kyung Lee, In Jae Lee, Ji Hun Cha, Whoi Yul Kim, Dong Chan Cho
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Abstract
A gaze tracking apparatus and method are provided that may calculate a three-dimensional (3D) position of a user using at least two wide angle cameras, may perform panning, tilting, and focusing based on position information of the user and eye region detection information, using a narrow angle camera, may detect pupil center information and corneal reflected light information from an eye image acquired through an operation of the narrow angle camera, and may finally calculate gaze position information from the pupil center information and the corneal reflected light information.
Claims14
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.
A gaze tracking apparatus, comprising:
- at least two wide angle cameras to receive input of image information, and to calculate user position information associated with a user through calibration;
- a narrow angle camera to perform panning, tilting, and focusing, using the user position information and eye region detection information;
- an image acquiring unit to acquire an eye image through an operation of the narrow angle camera;
- a detector to detect pupil center information and corneal reflected light information from the eye image;
- 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.
Dependencies are inferred from the claim text.