The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 05, 2010
Filed:
Nov. 15, 2004
Roel Vertegaal, Battersea, CA;
Changuk Sohn, Kingston, CA;
Daniel Cheng, Kingston, CA;
Victor Macfarlane, Battersea, CA;
Jeffrey S. Shell, Toronto, CA;
Roel Vertegaal, Battersea, CA;
Changuk Sohn, Kingston, CA;
Daniel Cheng, Kingston, CA;
Victor Macfarlane, Battersea, CA;
Jeffrey S. Shell, Toronto, CA;
Queen's University at Kingston, Kingston, Ontario, CA;
Abstract
Apparatus and method for eye gaze tracking in human or animal subjects without calibration of cameras, specific measurements of eye geometries or the tracking of a cursor image on a screen by the subject through a known trajectory. One embodiment includes one uncalibrated camera for acquiring video images of the subject's eye(s) and optionally having an on-axis illuminator, and a surface, object, or visual scene with embedded off-axis illuminator markers. The off-axis markers are reflected on the corneal surface of the subject's eyes as glints. The glints indicate the distance between the point of gaze in the surface, object, or visual scene and the corresponding marker on the surface, object, or visual scene.