Systems and methods for iris detection and gaze estimation
OwnerBernardo R. Pires, Takeo Kanade +1inventors
InventorsBERNARDO R. PIRES, TAKEO KANADE, AKIHIRO TSUKADA
Life of this patent
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Abstract
A method for estimating a direction of a subject's gaze includes providing headgear to be worn by the subject, the headgear including an imaging system in operative connection therewith, imaging at least one eyeball using the imaging system over time using light in the visible spectrum, using light in the visible spectrum to determine the position of the iris on a model of the eyeball, and estimating the direction of the subject's gaze from the determined position of the iris on the model of the eyeball.
Claims22
A method for estimating a direction of a subject's gaze, comprising:
- providing headgear to be worn by the subject, the headgear including an imaging system in operative connection therewith;
- imaging at least one eyeball using the imaging system over time using light in the visible spectrum,
- using light in the visible spectrum to determine the position of the iris on a model of the eyeball;
- and
- estimating the direction of the subject's gaze from the determined position of the iris on the model of the eyeball.
A method for estimating a direction of a subject's gaze, comprising:
- providing headgear to be worn by the subject, the headgear including an imaging system in operative connection therewith;
- imaging at least one eyeball using the imaging system over time, modeling the eyeball as a sphere;
- determining the position of the iris on the sphere modeling the eyeball by mapping an image from the imaging system to a θ, φ plane wherein θ is a polar angle about an axis ze emanating from the center of the sphere modeling the eyeball, φ is an azimuth angle in an xe, ye plane which passes through the center of the sphere modeling the eyeball and is orthogonal to the ze axis, and determining the position of the iris on the θ, φ plane by detection of a circle modeling the iris on the θ,φ plane;
- and
- estimating the direction of the subject's gaze from the determined position of the iris on the eyeball.
A method for estimating a direction of a subject's gaze, comprising:
- providing headgear to be worn by the subject, the headgear including an imaging system in operative connection with the headgear;
- imaging at least one eyeball using the imaging system over time,
- determining the position of the iris on the eyeball by modeling the eyeball as a sphere and modeling the iris as a circle movable on the sphere modeling the eyeball;
- and
- estimating the direction of the subject's gaze from the determined position of the iris on the eyeball.
Dependencies are inferred from the claim text.