EYE GAZE TRACKING APPARATUS, IMAGING APPARATUS, EYE GAZE TRACKING METHOD, PROGRAM, AND INTEGRATED CIRCUIT
First Claim
1. An eye gaze tracking apparatus which detects a gaze-path direction of a user from an electro-oculogram, said eye gaze tracking apparatus comprising:
- an electro-oculogram measuring unit configured to measure the electro-oculogram resulting from an eye movement, and to output an electro-oculogram original signal;
a calibration index presenting unit configured to present a calibration index to the user;
a saccade detection unit configured to detect a saccadic movement from the electro-oculogram original signal, and to output an electro-oculogram change amount, the saccadic movement being a rapid eyeball movement which occurs when a gaze-point of the user moves to the calibration index presented by said calibration index presenting unit, and the electro-oculogram change amount being an amount of change in the electro-oculogram before or after the saccadic movement;
a calibration parameter calculating unit configured to calculate a calibration parameter based on a position of the calibration index presented by said calibration index presenting unit and the electro-oculogram change amount that has been output from said saccade detection unit; and
a calibration unit configured to detect the gaze-path direction of the user from the electro-oculogram original signal based on the calibration parameter.
1 Assignment
0 Petitions
Accused Products
Abstract
An eye gaze tracking apparatus (100) includes: an electro-oculogram measuring unit that outputs an electro-oculogram original signal; a calibration index presenting unit (103) that presents a calibration index to a user; a saccade detection unit (104) that outputs an electro-oculogram change amount that is an amount of change in an electro-oculogram before or after a saccadic movement which is measured when a gaze-path position of the user moves to the calibration index; a calibration parameter calculating unit (105) that calculates a calibration parameter based on a position of the calibration index and an electro-oculogram change amount; and a calibration unit (101) that detects the gaze-path direction of the user from the electro-oculogram original signal.
-
Citations
13 Claims
-
1. An eye gaze tracking apparatus which detects a gaze-path direction of a user from an electro-oculogram, said eye gaze tracking apparatus comprising:
-
an electro-oculogram measuring unit configured to measure the electro-oculogram resulting from an eye movement, and to output an electro-oculogram original signal; a calibration index presenting unit configured to present a calibration index to the user; a saccade detection unit configured to detect a saccadic movement from the electro-oculogram original signal, and to output an electro-oculogram change amount, the saccadic movement being a rapid eyeball movement which occurs when a gaze-point of the user moves to the calibration index presented by said calibration index presenting unit, and the electro-oculogram change amount being an amount of change in the electro-oculogram before or after the saccadic movement; a calibration parameter calculating unit configured to calculate a calibration parameter based on a position of the calibration index presented by said calibration index presenting unit and the electro-oculogram change amount that has been output from said saccade detection unit; and a calibration unit configured to detect the gaze-path direction of the user from the electro-oculogram original signal based on the calibration parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. An eye gaze tracking method for detecting a gaze-path direction of a user from an electro-oculogram,
said eye gaze tracking method comprising: -
measuring an electro-oculogram resulting from an eye movement, and outputting an electro-oculogram original signal; presenting a calibration index to the user; detecting a saccadic movement from the electro-oculogram original signal, and outputting an electro-oculogram change amount, the saccadic movement being a rapid eyeball movement which occurs when a gaze-point of the user moves to the calibration index presented in said presenting a calibration index, and the electro-oculogram change amount being an amount of change in the electro-oculogram before or after the saccadic movement; calculating a calibration parameter based on a position of the calibration index presented in said presenting a calibration index and the electro-oculogram change amount that has been output in said detecting a saccadic movement; and detecting the gaze-path direction of the user from the electro-oculogram original signal based on the calibration parameter.
-
-
12. A program causing a computer to detect a gaze-path direction of a user, the computer being connected to an electro-oculogram measuring unit that measures an electro-oculogram resulting from an eye movement and outputs an electro-oculogram original signal, said program causing the computer to execute:
- presenting a calibration index to the user;
detecting a saccadic movement from the electro-oculogram original signal, and outputting an electro-oculogram change amount, the saccadic movement being a rapid eyeball movement which occurs when a gaze-point of the user moves to the calibration index presented in said presenting a calibration index, and the electro-oculogram change amount being an amount of change in the electro-oculogram before or after the saccadic movement; calculating a calibration parameter based on a position of the calibration index presented in said presenting a calibration index and the electro-oculogram change amount that has been output in said detecting a saccadic movement; and detecting the gaze-path direction of the user from the electro-oculogram original signal based on the calibration parameter.
- presenting a calibration index to the user;
-
13. An integrated circuit which detects a gaze-path direction of a user and is connected to an electro-oculogram measuring unit that measures an electro-oculogram resulting from an eye movement and outputs an electro-oculogram original signal, said integrated circuit comprising:
- a calibration index presenting unit configured to present a calibration index to the user;
a saccade detection unit configured to detect a saccadic movement from the electro-oculogram original signal, and to output an electro-oculogram change amount, the saccadic movement being a rapid eyeball movement which occurs when a gaze-point of the user moves to the calibration index presented by said calibration index presenting unit, and the electro-oculogram change amount being an amount of change in the electro-oculogram before or after the saccadic movement; a calibration parameter calculating unit configured to calculate a calibration parameter based on a position of the calibration index presented by said calibration index presenting unit and the electro-oculogram change amount that has been output from said saccade detection unit; and a calibration unit configured to detect the gaze-path direction of the user from the electro-oculogram original signal based on the calibration parameter.
- a calibration index presenting unit configured to present a calibration index to the user;
Specification