Method and apparatus for iris biometric systems for use in an entryway
First Claim
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1. An iris biometric system for use about a doorway, comprising:
- a processor;
a plurality of illuminators coupled to the processor;
a plurality of cameras coupled to the processor and positioned in substantially the same plane as the illuminators, wherein the illuminators and the cameras are positioned in substantially the same plane as the doorway;
a sensor coupled to the processor for detecting when a subject enters and leaves the system, wherein the sensor uses diffuse reflection points through a capture volume, the sensor acting as a beam perpendicular to the plane of the doorway toward the subject that is broken as the subject walks toward the system, andwherein the processor is configured to control the cameras and the illuminators such that the illuminators illuminate an iris of the subject walking through the doorway and move corneal specularities from the iris to a pupil of the subject, and the cameras capture an image of the iris.
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Abstract
A method and apparatus for designing an iris biometrics system that operates in minimally constrained settings. The image acquisition system has fewer constraints on subjects than traditional methods by extending standoff distance and capture volume. The method receives design parameters and provides derived quantities that are useful in designing an image acquisition system having a specific set of performance requirements. Exemplary scenarios of minimally constrained settings are provided, such as a high volume security checkpoint, an office, an aircraft boarding bridge, a wide corridor, and an automobile.
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Citations
5 Claims
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1. An iris biometric system for use about a doorway, comprising:
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a processor; a plurality of illuminators coupled to the processor; a plurality of cameras coupled to the processor and positioned in substantially the same plane as the illuminators, wherein the illuminators and the cameras are positioned in substantially the same plane as the doorway; a sensor coupled to the processor for detecting when a subject enters and leaves the system, wherein the sensor uses diffuse reflection points through a capture volume, the sensor acting as a beam perpendicular to the plane of the doorway toward the subject that is broken as the subject walks toward the system, and wherein the processor is configured to control the cameras and the illuminators such that the illuminators illuminate an iris of the subject walking through the doorway and move corneal specularities from the iris to a pupil of the subject, and the cameras capture an image of the iris. - View Dependent Claims (2, 3, 4, 5)
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Specification