Method and apparatus for calibration-free eye tracking
First Claim
1. A method for tracking a user'"'"'s eye gaze at a surface, object, or visual scene, comprising:
- providing an imaging device for acquiring images of at least one of the user'"'"'s eyes;
modeling, measuring, estimating, and/or calibrating for the user'"'"'s head position;
providing one or more markers associated with the surface, object, or visual scene for producing corresponding glints or reflections in the user'"'"'s eyes;
analyzing the images to find said glints or reflections and/or the pupil; and
determining eye gaze of the user upon a said one or more marker without calibration relative to a said one or more marker, as indicative of the user'"'"'s eye gaze at the surface, object, or visual scene.
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Accused Products
Abstract
A method and apparatus for eye gaze tracking in human or animal subjects without calibration of cameras, specific measurements of eye geometries, or tracking of a cursor image on a screen by the subject through a known trajectory. One embodiment provides a method for tracking a user'"'"'s eye gaze at a surface, object, or visual scene, comprising: providing an imaging device for acquiring images of at least one of the user'"'"'s eves: modeling, measuring, estimating, and/or calibrating for the user'"'"'s head position: providing one or more markers associated with the surface, object, or visual scene for producing corresponding glints or reflections in the user'"'"'s eyes; analyzing the images to find said glints or reflections and/or the pupil: and determining eye gaze of the user upon a said one or more marker as indicative of the user'"'"'s eye gaze at the surface, object, or visual scene.
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Citations
56 Claims
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1. A method for tracking a user'"'"'s eye gaze at a surface, object, or visual scene, comprising:
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providing an imaging device for acquiring images of at least one of the user'"'"'s eyes; modeling, measuring, estimating, and/or calibrating for the user'"'"'s head position; providing one or more markers associated with the surface, object, or visual scene for producing corresponding glints or reflections in the user'"'"'s eyes; analyzing the images to find said glints or reflections and/or the pupil; and determining eye gaze of the user upon a said one or more marker without calibration relative to a said one or more marker, as indicative of the user'"'"'s eye gaze at the surface, object, or visual scene. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. Apparatus for tracking a user'"'"'s eye gaze at a surface, object, or visual scene, comprising:
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an imaging device for acquiring images of at least one of the user'"'"'s eyes, the imaging device modeling, measuring, estimating, and/or calibrating for the user'"'"'s head position; one or more markers associated with the surface, object, or visual scene for producing corresponding glints or reflections in the user'"'"'s eyes; and means for analyzing the images to find said glints or reflections and/or the pupil and determining the user'"'"'s eye gaze upon a said one or more marker without calibration relative to a said one or more marker, as indicative of the user'"'"'s eye gaze at the surface, object, or visual scene. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
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Specification