Device and method for tracking gaze
AssigneeKorea Institute of Science and Technology
InventorsJi Hyung PARK, Joong Ho LEE, Chul Woo CHO
Life of this patent
Estimating the term…
Abstract
A gaze tracking device includes a first image acquisition unit installed at a right side of a face of a user to acquire a side image of a right eye, a second image acquisition unit installed at a left side of the face of the user to acquire a side image of a left eye, a fixing unit to fix the first image acquisition unit and the second image acquisition unit, and a gaze tracking unit to track a gaze position of the user by deriving a pupil and iris area, a sclera area, and an angle between eyelids from the side image of the right eye and the side image of the left eye. Accordingly, accurate gaze tracking is ensured while realizing a compact and lightweight gaze tracking device.
Claims9
A gaze tracking device, comprising:
- a first image acquisition unit installed at a right side of a face of a user to acquire a side image of a right eye;
- a second image acquisition unit installed at a left side of the face of the user to acquire a side image of a left eye;
- a fixing unit to fix the first image acquisition unit and the second image acquisition unit;
- and
- a gaze tracking unit to track a gaze position of the user by deriving a pupil and iris area, a sclera area, and an angle between eyelids from the side image of the right eye and the side image of the left eye.
A gaze tracking method, comprising:
- acquiring each of a side image of a right eye and a side image of a left eye of a user;
- detecting a pupil and iris area and a sclera area from the side image of the right eye and the side image of the left eye;
- calculating a horizontal gaze angle of the user using a ratio of the pupil and iris area to the sclera area;
- measuring an angle between eyelids from the side image of the right eye and the side image of the left eye;
- calculating a vertical gaze angle of the user using a ratio of an angle between an upper eyelid of the user and a reference line to an angle between a lower eyelid of the user and the reference line;
- and
- calculating a final gaze position of the user from the horizontal gaze angle and the vertical gaze angle.
Dependencies are inferred from the claim text.