Iris-based biometric identification

Details Iris-based biometric identification Iris-based biometric identification

2007-08-14

2008-10-28

Bella, Matthew C. (Department: 2624)

Image analysis

Applications

Personnel identification

C382S115000, C382S116000, C382S118000

Reexamination Certificate

active

07444007

ABSTRACT:
A method includes forming a feature vector associated with an iris of an individual using a transform operation including converting an iris image into a log-polar image, scaling one or more samples in the log-polar image according to a Fourier-Mellin transform, and performing a Fourier transform on the scaled samples. The method involves forming an iris digest based on the feature vector, and creating a biometric identifier based on the iris digest. A system includes an iris scanner, an iris analyzer that forms an image of a human iris wherein the presence of eyelashes in the image is minimized, forms a feature vector associated with the iris image using a modified Fourier-Mellin transform, and compresses the feature vector into an iris digest.

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