Patent Document ID: 20040184642
Application ID: 10738050
Patent Status: 0

Claim One:
1. A fingerprint verification method using a fingerprint image, the method comprising: extracting N D sample feature points (N D is an integer greater than or equal to four) from a fingerprint image that has been sampled; assigning a sample numerical values to each of the sample feature points as sample numerical value information, the sample numerical values being obtained from a plurality of sample connection lines, which connect each of the sample feature points with L D close sample feature points (2&lE;L D &lE;N D −1, L D is an integer) which are close to each of the sample feature points; based on results of comparison between the sample numerical value information and registration numerical value information which is registration numerical values assigned to each of N R registration feature points (N R is an integer greater than or equal to four), associating m sample feature points (3&lE;m&lE;N D and 3&lE;m&lE;N R, m is an integer) among the N D sample feature points with m registration feature points among the N R registration feature points; and comparing a position relationship among the m sample feature points with a position relationship among the m registration feature points.