Methods for performing biometric recognition of a human eye and corroboration of same

Abstract

A method of biometric recognition is provided. Multiple images of the face or other non-iris image and iris of an individual are acquired. If the multiple images are determined to form an expected sequence of images, the face and iris images are associated together. A single camera preferably acquires both the iris and face images by changing at least one of the zoom, position, or dynamic range of the camera. The dynamic range can be adjusted by at least one of adjusting the gain settings of the camera, adjusting the exposure time, and/or adjusting the illuminator brightness. The expected sequence determination can be made by determining if the accumulated motion vectors of the multiple images is consistent with an expected set of motion vectors and/or ensuring that the iris remains in the field of view of all of the multiple images.

1 . A method of biometric acquisition, comprising the steps of:
 (a) acquiring, by a sensor, at least one image of the iris comprising a reflection of a predefined geometrical shape;   (b) determining a value of deformation or magnification of the geometrical shape in the reflection;   (c) comparing the determined value to a value of deformation or magnification pre-determined from a reflection occurring off a live eye; and   (d) determining that the at least one image of the iris is acquired from a live eye if the determined value is consistent with the pre-determined value.   
     
     
         2 - 20 . (canceled)