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Eyelid shape estimation using eye pose measurement

  • US 10,671,845 B2
  • Filed: 11/02/2018
  • Issued: 06/02/2020
  • Est. Priority Date: 08/21/2015
  • Status: Active Grant
First Claim
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1. A method for estimating pose of an eye, the method comprising:

  • under control of a hardware processor;

    detecting, from an image of the eye, a boundary between an eyelid of an eye and an iris of the eye using an edge detector;

    determining an eyelid shape of the eye using the boundary between the eyelid of the eye and the iris of the eye,wherein an eyelid shape coordinate system of the eyelid shape comprises a horizontal shift, a vertical shift, and a curvature of the eyelid,wherein a functional relationship between the eyelid shape coordinate system and an eye pose coordinate system comprises a mapping matrix, andwherein the eye pose coordinate system comprises an azimuthal deflection angle of the eye and a zenithal deflection angle of the eye relative to a resting orientation of the eye; and

    estimating an eye pose of the eye based at least in part on the eyelid shape and the functional relationship.

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