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FINGERPRINT MATCHING DEVICE, FINGERPRINT MATCHING METHOD, FINGERPRINT MATCHING PROGRAM AND FINGERPRINT REGISTRATION DEVICE
申请公布号：JP2006172258(A)
申请号：JP20040365565
申请日期：2004.12.17
申请公布日期：2006.06.29
发明人：NAKAMURA TAKAHIRO;SANO EMIKO;SHIKAI MASAHIRO
分类号：G06T1/00;A61B5/117;G06T3/00;G06T7/00
主分类号：G06T1/00
摘要：<P>PROBLEM TO BE SOLVED: To provide a contactless fingerprint matching device that increases the accuracy of matching by acquiring matching data considering the attitude of a finger. <P>SOLUTION: The device 2 comprises a camera unit 4 and a laser radiation unit 6 for generating data on a finger face including a fingerprint, a measurement part for measuring a three-dimensional position of the finger face according to the finger face data, a calculation part for computing a terminal axis direction according to the measured three-dimensional position, a setting part for setting a curvilinear coordinate system defining a curved surface formed by a first group of lines of intersection of the finger face and a longitudinal section group substantially parallel to the terminal axis direction and a second group of lines of intersection of the finger face and a cross section group substantially perpendicular to the longitudinal section group, a fingerprint image data acquisition part for acquiring fingerprint image data represented in a predetermined plane coordinate system, and a matching data acquisition part for producing, from the fingerprint image data, intermediate data represented in the curvilinear coordinate system and computing, from the intermediate data, matching data represented in a coordinate system of the virtual plane into which the curved surface corresponding to the curvilinear coordinate system is virtually developed. <P>COPYRIGHT: (C)2006,JPO&NCIPI