Method and apparatus for rolling enrollment for signature verification
First Claim
1. A method of adapting a signature verification system to variations in a signature of a user, comprising the steps of:
- obtaining one or more signature samples from the user, the one or more obtained signature samples being submitted by the user as part of a regular authentication procedure associated with the signature verification system; and
updating a reference set of signature samples for the user through selection of one or more signature samples from the obtained signature samples, such that the updated reference set is usable by the signature verification system for verifying subsequent signature samples attributed to the user;
wherein the selection of the one or more signature samples used to update the reference set is conditioned on a false rejection rate of the user when at least one obtained signature sample of the user is authenticated and on an identification check when no obtained signature sample is authenticated; and
further wherein the updating step is implemented as one or more software components loaded from a memory and executed by a processor.
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Abstract
Improved techniques are disclosed for adapting signature verification systems to natural signature variations. For example, a technique for adapting a signature verification system to variations in a signature of a user includes the following steps/operations. One or more signature samples are obtained from the user. The one or more obtained signature samples are submitted by the user as part of a regular authentication procedure associated with the signature verification system. A reference set of signature samples for the user is updated through selection of one or more signature samples from the obtained signature samples, such that the updated reference set is usable by the signature verification system for verifying subsequent signature samples attributed to the user. The selection of the one or more signature samples used to update the reference set is conditioned on a false rejection rate of the user when at least one obtained signature sample of the user is authenticated and on an identification check when no obtained signature sample is authenticated.
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Citations
17 Claims
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1. A method of adapting a signature verification system to variations in a signature of a user, comprising the steps of:
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obtaining one or more signature samples from the user, the one or more obtained signature samples being submitted by the user as part of a regular authentication procedure associated with the signature verification system; and updating a reference set of signature samples for the user through selection of one or more signature samples from the obtained signature samples, such that the updated reference set is usable by the signature verification system for verifying subsequent signature samples attributed to the user; wherein the selection of the one or more signature samples used to update the reference set is conditioned on a false rejection rate of the user when at least one obtained signature sample of the user is authenticated and on an identification check when no obtained signature sample is authenticated; and
further wherein the updating step is implemented as one or more software components loaded from a memory and executed by a processor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. Apparatus for adapting a signature verification system to variations in a signature of a user, comprising:
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a memory; and a processor coupled to the memory and operative to;
(i) obtain one or more signature samples from the user, the one or more obtained signature samples being submitted by the user as part of a regular authentication procedure associated with the signature verification system; and
(ii) update a reference set of signature samples for the user through selection of one or more signature samples from the obtained signature samples, such that the updated reference set is usable by the signature verification system for verifying subsequent signature samples attributed to the user, wherein the selection of the one or more signature samples used to update the reference set is conditioned on a false rejection rate of the user when at least one obtained signature sample of the user is authenticated and on an identification check when no obtained signature sample is authenticated. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. An article of manufacture for adapting a signature verification system to variations in a signature of a user, comprising a machine readable storage medium containing one or more programs which when executed by a processor implement the steps of:
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obtaining one or more signature samples from the user, the one or more obtained signature samples being submitted by the user as part of a regular authentication procedure associated with the signature verification system; and updating a reference set of signature samples for the user through selection of one or more signature samples from the obtained signature samples, such that the updated reference set is usable by the signature verification system for verifying subsequent signature samples attributed to the user; wherein the selection of the one or more signature samples used to update the reference set is conditioned on a false rejection rate of the user when at least one obtained signature sample of the user is authenticated and on an identification check when no obtained signature sample is authenticated.
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Specification