High security biometric authentication system
AssigneeHitachi, Ltd.
InventorsTAKAO MURAKAMI, Kenta Takahashi
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Abstract
By reducing both a WAP and an LAP to a certain value or lower, biometric authentication with high security is implemented. A template and a query sample are generated from biometric data of a user and they are matched. There, a query sample-specific impostor distribution, to which a score of a query sample and a template of an impostor follows, and a template-specific impostor distribution, to which a score of a template arid a query sample of an impostor follows, are estimated and user judgment is performed using one of them in which false accept is more difficult to occur.
Claims7
A biometric authentication system, comprising:
- a biometric data input sensor which acquires biometric data from users;
- a template generation unit which generates a template from the biometric data.
- a query sample generation unit which generates a query sample from the biometric data,
- a matching unit which matches the query sample and the template with each other;
- a query sample-specific impostor distribution estimation unit which estimates a query sample-specific impostor distribution to which a score of the query sample and the template of an impostor follows;
- a template-specific impostor distribution estimation unit which estimates a template-specific impostor distribution to which a score of the template and the query sample of an impostor follows;
- and
- a user judgment unit which performs judgment of a user using one in which false accept is more difficult to occur between the query sample-specific impostor distribution and the template-specific impostor distribution.
Dependencies are inferred from the claim text.