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Systems and methods with identity verification by comparison and interpretation of skin patterns such as fingerprints

  • US 5,909,501 A
  • Filed: 09/09/1996
  • Issued: 06/01/1999
  • Est. Priority Date: 09/09/1996
  • Status: Expired due to Term
First Claim
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1. Apparatus for verifying the identity of a person by comparing test data representing a two-dimensional test image of that person'"'"'s skin-pattern print with reference data derived from a two-dimensional reference skin-pattern print image obtained during a prior enrollment procedure;

  • said apparatus being for use in the presence of an assumed distortion of the test image relative to the reference image; and

    said apparatus comprising;

    means for deriving from the test data corresponding multilevel test data that are bandpassed and normalized;

    means for estimating the assumed distortion of the test image relative to a reference image;

    means for comparing portions of the bandpassed and normalized multilevel test data with the reference data, taking into account the estimated distortion;

    means responsive to the comparing means for making an identity-verification decision; and

    nonvolatile memory means for holding instructions for automatic operation of the foregoing means.

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