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Frequency and resolution analyzed biometric authentication method and device

  • US 7,099,495 B2
  • Filed: 02/27/2002
  • Issued: 08/29/2006
  • Est. Priority Date: 02/28/2001
  • Status: Active Grant
First Claim
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1. A personal authentication method using biological information,wherein during registration, acquired biological information is frequency-analyzed using a plurality of frequencies to generate a feature for each frequency and register the feature, andwherein the method comprises the steps of:

  • selecting a frequency used for frequency analysis for authentication from the plurality of frequencies;

    performing frequency analysis for acquired biological information of a person to be authenticated using the selected frequency to generate a feature for the frequency;

    comparing the generated feature with the feature generated for the same frequency during the registration to perform personal authentication;

    wherein the biological information is an image of an iris of an eye; and

    wherein the selection of the frequency during the authentication is performed based on a resolution of an iris image taken during the authentication.

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