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Biometric authentication technology

  • US 9,600,730 B2
  • Filed: 10/17/2016
  • Issued: 03/21/2017
  • Est. Priority Date: 06/07/2011
  • Status: Active Grant
First Claim
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1. A biometric authentication system comprising:

  • a data storage system configured to maintain, for a group of multiple, different people, biometric data that includes sorted similarity scores, wherein each similarity score represents a similarity between an image of at least a portion of a corresponding person from the group of multiple, different people and a reference image; and

    a biometric enrollment system that includes at least one computer, the biometric enrollment system configured to;

    receive a particular image of at least a portion of a particular person;

    compute a particular similarity score that represents similarity between the particular image and the reference image used in computing the similarity scores for each person in the group of multiple, different people;

    determine, from the similarity scores stored in the data storage system for the reference image, a first similarity score that has a value greater than the particular similarity score without any other similarity scores from the similarity scores stored in the data storage system for the reference image having values between the first similarity score and the particular similarity score;

    determine, from the similarity scores stored in the data storage system for the reference image, a second similarity score that has a value less than the particular similarity score without any other similarity scores from the similarity scores stored in the data storage system for the reference image having values between the first similarity score and the second similarity score; and

    determine a location in the data storage system at which to store biometric data for the particular person using the first similarity score, the second similarity score, and the particular similarity score as an index in the data storage system; and

    store, in the data storage system, the biometric data for the particular person at the location in the data storage system.

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