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US 10,762,348 B2Granted
Method and apparatus for determining the position and/or the orientation of an eye
AssigneePrecitec Optronik GmbH
InventorsGabriel Palzer, Christoph Dietz, Stefan Birmanns
Life of this patent
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Abstract
A method for determining parameters for the position and orientation of the cornea of an eye and involves the steps of generating linear structures on the iris and/or sclera of the eye, having a camera capture a first image of the eye including the linear structures, and determining, on the basis of the first image, a distance and an orientation of the linear structures in relation to the camera.
Claims20
A method for determining a position and an orientation of a cornea of an eye, comprising the steps of:
- projecting linear structures directly on an iris of the eye;
- recording a first image of the eye with the linear structures on the iris using a camera;
- determining, using the linear structures on the iris of the eye of the first image, a distance and parameters characterizing the orientation of the linear structures relative to the camera, wherein the iris is assumed to be planar;
- and
- determining the position and orientation of the cornea of the eye from the distance and parameters that characterize the orientation of the linear structures on the iris.
2 more elements
An apparatus for determining position and orientation of a cornea of an eye, comprising:
- a projector for projecting linear structures directly on the iris of the eye;
- a camera having an axis aligned with the eye;
- and
- a control device connected to the projector and the camera and configured to record a first image of the iris of the eye with the linear structures by way of the camera, the control device being configured to determine based on the linear structures on the iris of the eye of the first image, a distance and parameters characterizing the orientation of the linear structures relative to the camera, wherein the iris is assumed to be planar, and further configured to determine the position and orientation of the eye from the distance and parameters that characterize the orientation of the linear structures on the iris.
1 more element
Dependencies are inferred from the claim text.