| 摘要 |
PROBLEM TO BE SOLVED: To enable always accurate individual person authentication by setting a threshold value in accordance with individual characteristic. SOLUTION: In this individual person authentication method, unevenness information of wrinkles of an identical person identical finger to be authenticated is read m-times, each error is calculated from the combination mC2 in which arbitrary two are selected, similarity is calculated from a plurality of calculated errors, a characteristic curve of an FRR (principal rejection rate) and a characteristic curve of an FAR (others rejection rate) of the person are obtained from the similarity, and a threshold value peculiar to the individual person is set. The unevenness information of a finger of an individual person to be authenticated is compared with the unevenness information of a finger of the individual person which is previously registered, and individual person authentication is performed by using the threshold value peculiar to the individual person.
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