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 Title: |
US6578962:
Calibration-free eye gaze tracking
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Amir, Arnon; Cupertino, CA
Flickner, Myron Dale; San Jose, CA
Koons, David Bruce; San Jose, CA
Russell, Gregory Fraser; Yorktown Heights, NY
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| Assignee: |
International Business Machines Corporation, Armonk, NY
other patents from INTERNATIONAL BUSINESS MACHINES CORPORATION (280070) (approx. 44,393)
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| Published / Filed: |
2003-06-17
/ 2001-04-27
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| Application Number: |
US2001000844682
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| IPC Code: |
Advanced:
A61B 3/113;
Core:
more...
IPC-7:
A61B 3/14;
G09G 5/08;
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| ECLA Code: |
A61B3/113;
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| U.S. Class: |
351/209;
345/157;
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| Field of Search: |
351/209,210,208,200,246,206,205,211,221
396/051
345/156,157,158,973
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| Priority Number: |
| 2001-04-27 |
US2001000844682 |
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| Abstract: |
A system and method for calibration-free tracking of a user's eye gaze vector and point of regard even if substantial head movement or rotation occurs. The preferred embodiment includes two synchronized interlaced cameras, each viewing the user's eye and having on-axis lighting that is alternately modulated. An image difference between lighted and unlighted images of the eye is used to identify a user's pupil. A plane containing the gaze vector is defined by rotating a base plane through the angle in a camera image plane between a pupil center, a first glint, and a second glint. The intersection of two such planes (one from each camera), defines the gaze vector. The gaze position is the intersection of the gaze vector with the object being viewed by the user. Alternate embodiments are also described.
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| Attorney, Agent or Firm: |
McSwain, Marc D. ;
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| Primary / Asst. Examiners: |
Lateef, Marvin M.; Sanders, John R.
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| INPADOC Legal Status: |
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Family Legal Status Report
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| Family: |
Show 3 known family members
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First Claim:
Show all 30 claims |
We claim:
1. A method for eye gaze tracking, comprising the steps of:
- focusing at least one camera upon at least one of a user's eyes, each said camera having a focal center, an image plane, and a co-located light source emitting light toward said eye;
- identifying and locating image aspects including at least one glint and a pupil image in said image plane; and
- computing a gaze vector from at least one plane generated from said image aspects and camera position and orientation data.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 8 U.S. patent(s) that reference this one
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| Foreign References: |
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| Other References: |
K. Talmi and J. Liu, "Eye and Gaze Tracking for Visually Controlled Interactive Stereoscopic Displays", Image Communication, vol. 14, No. 10, p. 799-810, 1999.
(12 pages)
Cited by 4 patents
[ISI abstract]
S. Shih, Y. Wu, J. Liu, "A Calibration-Free Gaze Tracking Technique", ICPR 2000, vol. 4, pp. 201-204, 2000.
J. Liu et al., "Three-dimensional PC: toward novel forms of human-computer interaction", in Three-Dimensional Video and Display: Devices and Systems SPIE CR76, Nov. 5-8, 2000, Boston, MA, USA.
K. White, Jr. et al., "Spatially Dynamic Calibration of an Eye-Tracking System", IEEE Transactions on Systems, Man and Cybernetics, vol. 23, No. 4, Jul./Aug. 1993, p. 1162-1168.
(7 pages)
Cited by 5 patents
[ISI abstract]
Y. Ebisawa et al., "Effectiveness of Pupil Area Detection Technique Using Two Light Sources and Image Difference Method", Proceedings of the 15th Annual International Conference of IEEE Engineering in Medicine and Biology Society, vol. 15, Oct. 1993, p. 1268-1269.
Technical Report MSR-TR-98-71 from http://research.microsoft.com/~zhang/Papers/TR98-71.pdf also available as: Z. Zhang, "A Flexible New Technique for Camera Calibration", IEEE Transactions on Pattern Analysis and Machine Intelligence, 22(11):1330-1334, 2000.
(5 pages)
Cited by 4 patents
[ISI abstract]
German Patent Application DE19810728A1 "Eye Movement Detection and Processing Device", published Sep. 30, 1999 by S. Astoor and J. Liu, A61B3/113.
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