Eye tracking method and display apparatus using the same
A display apparatus employs two tracking units to track the gaze of a user. The display apparatus includes a first tracking unit to generate position information on a user positioned relative to a displayed image; and a second tracking unit to track a gaze of the user upon the displayed image, based on the position information. A method of eye tracking using the display apparatus includes steps of displaying an image; generating position information on a user positioned relative to the displayed image; and tracking a gaze of the user upon the displayed image, based on the position information.
1. A display apparatus comprising:
a display to display an image;
a first tracking unit to generate position information on a user positioned relative to the displayed image; and
a second tracking unit to capture a first image of the user, to determine a portion of the captured first image corresponding to a position of the user, based on the position information, to zoom in the portion of the captured first image, and to track a gaze of the user upon the displayed image by analyzing the zoomed in portion of the first image.
2. The display apparatus of claim 1 , wherein the first tracking unit comprises:
a sensor to detect a distance between the user and the displayed image and to output the position information based on the detected distance.
3. The display apparatus of claim 1 , wherein the first tracking unit comprises:
a first camera to capture the first image of the user; and
a position tracking unit to derive the position information from the captured first image,
wherein the position information includes coordinate information indicative of a position of the head of the user within the first image.
4. The display apparatus of claim 1 , wherein the position information includes coordinate information indicative of a position of the head of the user.
5. The display apparatus of claim 4 , wherein the second tracking unit comprises:
a second camera to capture a second image of the user by referencing the coordinate information; and
an eye tracking unit to track the gaze of the user by analyzing the second image.
6. The display apparatus of claim 5 , wherein the second image corresponds to a portion of the first image.
7. A display apparatus comprising:
a display to display an image;
a tracking unit;
a communication unit to receive, from a peripheral device, a first image of a user positioned relative to the displayed image; and
a controller to calculate position information on the user based on the received first image, to determine a portion of the first image corresponding to a position of the user based on the position information, to zoom in the portion of the mage, and to control the tracking unit to track a gaze of the user upon the displayed image by alalyzing the zoomed in portion of the first image.
8. The display apparatus of claim 7 , wherein the position information includes coordinate information indicative of a position of the head of the user within the first image.
9. The display apparatus of claim 8 , wherein the tracking unit comprises:
a camera to capture a second image of the user by referencing the coordinate information; and
an eye tracking unit to track the gaze of the user by analyzing the second image.
10. The display apparatus of claim 9 , wherein the second image corresponds to a portion of the first image.
11. A method of eye tracking using a display apparatus, the method comprising:
displaying an image;
generating position information on a user positioned relative to the displayed image;
capturing a first image of the user;
determining a portion of the captured first image corresponding to a position the user based on the position information;
zooming in the portion of the captured first image; and
tracking a gaze of the user upon the displayed image by analyzing the zoomed portion of the first image.
12. The method of claim 11 , further comprising:
detecting a distance between the user and the displayed image,
wherein the position information is based on the detected distance.
13. The method of claim 11 , wherein the position information includes coordinate information indicative of a position of the head of the user.
14. The method of claim 13 , further comprising:
capturing a second image of the user by referencing the coordinate information,
wherein the gaze of the user is tracked by analyzing the second image.
15. The method of claim 14 , wherein the second image corresponds to a portion of the first image.
16. The method of claim 11 , further comprising:
capturing the first image of the user,
wherein the position information is derived from the captured first image and includes coordinate information indicative of a position of the head of the user within the first image.
17. A method of eye tracking using a display apparatus, the method comprising:
receiving, from a peripheral device, a first image of a user positioned relative to a displayed image;
calculating position information on the user based on the received first image;
determining a portion of the first image corresponding to a position of the user based on the position information;
zooming in the portion of the first image; and
tracking a gaze of the user upon the displayed image, by analyzing the zoomed in portion of the first image.
18. The method of claim 17 , wherein the position information includes coordinate information indicative of a position of the head of the user within the first image.
19. The method of claim 18 , further comprising:
capturing a second image of the user by referencing the coordinate information,
wherein the gaze of the user is tracked by analyzing the second image.
20. The method of claim 19 , wherein the second image corresponds to a portion of the first image.