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Apparatus and method for identifying individuals through their subcutaneous vein patterns and integrated system using said apparatus and method

  • US 6,301,375 B1
  • Filed: 04/06/1998
  • Issued: 10/09/2001
  • Est. Priority Date: 04/14/1997
  • Status: Expired due to Term
First Claim
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1. A method of authenticating a user by a subcutaneous vein pattern in the back of the user'"'"'s hand, comprising:

  • capturing an image containing a subcutaneous vein pattern from the back of a hand of a user;

    extracting a plurality of branching points from the subcutaneous vein pattern of the captured image, each branching point being defined as a point where three or more vessels meet;

    extracting branching characteristics for the each branching point from the subcutaneous vein pattern of the captured image, for the each branching point, the branching characteristics including the number of branches connected to the each branching point and the connection relationship between the each branching point and at least some of the other extracted branching points; and

    comparing the extracted branching characteristics with the branching characteristics of the branching points of a stored reference image for authentication of the user.

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