Biometric authentication method and biometric authentication apparatus
First Claim
1. A biometric authentication apparatus, which detects biometrics characteristic data of a living body and performs individual authentication, comprising:
- a detection device which detects the living body and obtains biometrics information;
a control unit which extracts, from said biometrics information, comparatively coarse first biometrics characteristic data and comparatively fine second characteristic data on a user; and
a biometrics information database file, in which is stored, as biometrics information on said user, said first biometrics characteristic data and said second biometrics characteristic data, wherein said control unit extracts comparatively coarse first biometrics characteristic data and comparatively fine second characteristic data for use in verification from said biometrics information obtained by said detection device, calculates the degree of similarity between said first biometrics characteristic data for verification and first biometrics characteristic data sets stored in said biometrics database file, determines the order of verification with second biometrics characteristic data sets stored in said biometrics database file according to said degrees of similarity, and performs verification of said second biometrics characteristic data for verification against said stored second biometrics characteristic data sets according to said verification order.
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Accused Products
Abstract
A biometric authentication device, which uses biometrics characteristic information to perform individual authentication, prevents declines in verification speed even when numerous biometrics information sets have been registered. A control unit registers broad characteristic quantities for blood vessel image data from an image capture device, together with characteristic data for verification. And at the time of authentication the control unit uses degrees of similarity of characteristic quantities to determine an order of verification, and performs verification of blood vessel image characteristic data in the verification order thus determined. The order of verification is determined based on captured blood vessel images, so that even when numerous characteristic data sets have been registered, verification can be performed in an order of verification based on a blood vessel image of the user, and the speed of verification can be improved.
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Citations
26 Claims
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1. A biometric authentication apparatus, which detects biometrics characteristic data of a living body and performs individual authentication, comprising:
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a detection device which detects the living body and obtains biometrics information;
a control unit which extracts, from said biometrics information, comparatively coarse first biometrics characteristic data and comparatively fine second characteristic data on a user; and
a biometrics information database file, in which is stored, as biometrics information on said user, said first biometrics characteristic data and said second biometrics characteristic data, wherein said control unit extracts comparatively coarse first biometrics characteristic data and comparatively fine second characteristic data for use in verification from said biometrics information obtained by said detection device, calculates the degree of similarity between said first biometrics characteristic data for verification and first biometrics characteristic data sets stored in said biometrics database file, determines the order of verification with second biometrics characteristic data sets stored in said biometrics database file according to said degrees of similarity, and performs verification of said second biometrics characteristic data for verification against said stored second biometrics characteristic data sets according to said verification order. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A biometric authentication method of detecting biometrics characteristic data and performing individual authentication, comprising the steps of:
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detecting biometrics information of a living body using a detection device;
extracting, from the biometrics information obtained, comparatively coarse first biometrics characteristic data and comparatively fine second characteristic data on the user;
calculating the degrees of similarity between said first biometrics characteristic data for verification and the first biometrics characteristic data sets stored in a biometrics database file;
determining the order of verification with second biometrics characteristic data stored in said biometrics database file according to the degrees of similarity; and
verifying said second biometrics characteristic data for verification against said stored second biometrics characteristic data sets according to said verification order. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification