Patent ID: 6301375
Filing Date: 2001-10-09
Classification: G06K

Abstract:
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; andcomparing the extracted branching characteristics with the branching characteristics of the branching points of a stored reference image for authentication of the user.