Methods for performing biometric recognition of a human eye and corroboration of same
First Claim
1. A method of biometric acquisition, comprising:
- acquiring, by at least one sensor, a plurality of images including an image of a face, and an image of a corresponding iris suitable for iris biometric identification and having a resolution of at least 100 to 200 pixels across the corresponding iris, the image of the face and the image of the corresponding iris acquired at the same time or within a specified period of time to ensure that the image of the face and the image of the corresponding iris are from a same live person, wherein acquiring the plurality of images includes using different settings of sensor gain, sensitivity, and illumination;
associating the image of the face with the image of the corresponding iris for biometric identification of the same live person; and
determining if motion vectors from comparing at least the image of the corresponding iris and the image of the face are consistent with that of an expected sequence of images acquired from the same live person.
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Accused Products
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.
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Citations
18 Claims
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1. A method of biometric acquisition, comprising:
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acquiring, by at least one sensor, a plurality of images including an image of a face, and an image of a corresponding iris suitable for iris biometric identification and having a resolution of at least 100 to 200 pixels across the corresponding iris, the image of the face and the image of the corresponding iris acquired at the same time or within a specified period of time to ensure that the image of the face and the image of the corresponding iris are from a same live person, wherein acquiring the plurality of images includes using different settings of sensor gain, sensitivity, and illumination; associating the image of the face with the image of the corresponding iris for biometric identification of the same live person; and determining if motion vectors from comparing at least the image of the corresponding iris and the image of the face are consistent with that of an expected sequence of images acquired from the same live person. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system, comprising:
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at least one sensor configured for acquiring a plurality of images including an image of a face, and an image of a corresponding iris suitable for iris biometric identification and having a resolution of at least 100 to 200 pixels across the corresponding iris, the image of the face and the image of the corresponding iris acquired at the same time or within a specified period of time to ensure that the image of the face and the image of the corresponding iris are from a same live person, wherein acquiring the plurality of images includes using different settings of sensor gain, sensitivity, and illumination; and a processor, operably coupled to the at least one sensor, configured to associate the image of the face with the image of the corresponding iris for biometric identification of the same live person, and to determine if motion vectors from comparing at least the image of the corresponding iris and the image of the face are consistent with that of an expected sequence of images acquired from the same live person. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification