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Biometrics authentication device and biometrics authentication method

  • US 9,898,673 B2
  • Filed: 08/15/2016
  • Issued: 02/20/2018
  • Est. Priority Date: 03/25/2014
  • Status: Active Grant
First Claim
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1. A biometrics authentication device comprising:

  • a computer configured to execute a program, the computer havinga PLDI (Principal-Line Dependent Index) generating unit that extracts directional features that respectively correspond to directions different from each other from an image that has been input, and generates a PLDI (Principal-Line Dependent Index) obtained by dividing a difference between a maximum directional feature and a minimum directional feature from among the directional features by an average value of the directional features;

    a PLDI (Principal-Line Dependent Index) matching processing unit that determines a first degree of similarity between the PLDI and a registered PLDI stored in a storing unit; and

    a determining unit that determines identity by using the first degree of similarity.

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