Method and system for adaptively varying templates to accommodate changes in biometric information
First Claim
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1. A method of identifying a user comprising the steps of:
- a) receiving a biometric information sample from the user for use in identifying the user;
b) determining electronic data representing said biometric information sample of the user;
c) analyzing the electronic data to compare the electronic data against first stored data relating to identifications of users;
d) when a substantial match is found, identifying the individual; and
, e) when a difference between the electronic data and the first stored data is above a predetermined other threshold, comparing the electronic data against adaptive enrolments, the adaptive enrolments relating to biometric information samples provided by the user for use in identifying the user by the steps (a) through (c).
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Abstract
A method of authenticating a user in dependence upon biometric input information is disclosed. According to the method when a user is identified, their biometric information or data derived therefrom is automatically stored. The data is then used in subsequent user identification attempts as a template. The original templates are not replaced but those templates that are automatically stored are replaced at intervals.
84 Citations
31 Claims
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1. A method of identifying a user comprising the steps of:
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a) receiving a biometric information sample from the user for use in identifying the user;
b) determining electronic data representing said biometric information sample of the user;
c) analyzing the electronic data to compare the electronic data against first stored data relating to identifications of users;
d) when a substantial match is found, identifying the individual; and
,e) when a difference between the electronic data and the first stored data is above a predetermined other threshold, comparing the electronic data against adaptive enrolments, the adaptive enrolments relating to biometric information samples provided by the user for use in identifying the user by the steps (a) through (c). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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13. A method of identifying a user comprising the steps of:
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a) receiving a biometric information sample from the user for use in identifying the user;
b) determining electronic data representing said biometric information sample of the user;
c) analyzing the electronic data to compare the electronic data against stored data, the stored data relating to identifications of users;
d) when a substantial match is found, performing the steps of;
identifying the individual;
storing the electronic data in association with the user identification as further stored data;
determining from the further stored data comparison data for use in identifying the user and different from the stored data; and
,e) wherein a difference between the electronic data and the stored data is above a predetermined other threshold, comparing the electronic data against other stored data, the other stored data relating to biometric information samples provided for use in identifying the user according to steps (a) to (e).
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18. A method of identifying a user comprising the steps of:
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receiving a biometric information sample from the user for use in identifying the user;
determining electronic data representing said biometric information sample of the user;
analyzing the electronic data to extract features for comparison with stored electronic data;
comparing the extracted features against stored electronic data, the stored electronic data relating to identifications of users;
when a substantial match is found, performing the steps of;
identifying the individual;
determining a number of times that the user has been identified and when the number is one of at least a predetermined number;
storing the electronic data in association with the user identification as further stored data;
determining from the further stored data comparison data for use in identifying the user and different from the data; and
,when a difference between the electronic data and the stored data is above a predetermined other threshold, comparing the electronic data against other stored data, the other stored data relating to biometric information samples provided for use in identifying the user.
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19. A method of identifying a user comprising the steps of:
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forming at least a first template including biometric features for use in identifying individual;
forming a history file including a plurality of biometric information samples each provided by the same individual at different limes for use in identifying the individual;
forming at least an adaptive enrollment template from the biometric information samples in the history file, wherein an individual is identified by registering provided biometric information sample against the at least a first template and, when registration is not successful registering the provided biometric information sample against the at least adaptive enrollment template.
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Specification