BIOMETRIC AUTHENTICATION USING BIOLOGIC TEMPLATES
First Claim
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1. A biometric apparatus comprising:
- a memory unit storing a registration biologic information template which is fixed and at least one learning biologic information template which is subject to replacement; and
a determining unit capable of operating in connection with the memory unit to;
receive an inputted biologic information,calculate a plurality of matching scores showing a respective degree of similarity between an inputted biologic information and each of a plurality of biologic information templates,determine whether the inputted biologic information is accepted based on the plurality of matching scores, andoutput a signal showing whether the inputted biologic information is accepted.
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Abstract
Tools and techniques for biometric authentication obtain a biologic information input such as a fingerprint image, which is to be accepted or rejected as being input from an authentic user. Calculated matching scores show respective degrees of similarity between the biologic information input and several templates. The templates include a fixed registration biologic information template, as well as non-fixed learning biologic information templates which are subject to replacement.
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Citations
18 Claims
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1. A biometric apparatus comprising:
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a memory unit storing a registration biologic information template which is fixed and at least one learning biologic information template which is subject to replacement; and a determining unit capable of operating in connection with the memory unit to; receive an inputted biologic information, calculate a plurality of matching scores showing a respective degree of similarity between an inputted biologic information and each of a plurality of biologic information templates, determine whether the inputted biologic information is accepted based on the plurality of matching scores, and output a signal showing whether the inputted biologic information is accepted. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for biometric authentication, comprising the steps of:
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obtaining a biologic information input which is to be accepted or rejected as being input from an authentic user; calculating a matching score which shows a degree of similarity between the biologic information input and a fixed registration biologic information template; for each of one or more non-fixed learning biologic information templates, calculating a matching score which shows a degree of similarity between the biologic information input and the learning biologic information template; determining whether the biologic information input is accepted as input from an authentic user based on the matching scores; and outputting a signal showing whether the biologic information input is accepted as input from an authentic user. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification