Information processing apparatus for verifying biometric authentication scores, information processing method, and non-transitory recording medium
AssigneeNEC Corporation
InventorsHiroshi Hashimoto, Akihiro Hayasaka
Life of this patent
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Abstract
An information processing apparatus includes: a first score acquisition unit that performs one-to-N verification by using target data acquired from a verification target and N pieces of registration data registered in advance, thereby acquiring a first matching score; and a second score acquisition unit that transforms the first matching score on the basis of an amount depending on a number of verifications N of the registration data, thereby acquiring a second matching score. According to such an information processing apparatus, it is possible to transform a score of the one-to-N verification into an appropriate value.
Claims6
An information processing apparatus comprising:
- at least one memory that is configured to store instructions;
- and
- at least one processor that is configured to execute the instructions to:
- receive captured target data for a verification target, wherein the captured target data comprises image data of the verification target;
- perform one-to-N verification by using the target data acquired from the verification target and N pieces of registration data registered in advance, thereby acquiring a first matching score;
- store a plurality of third matching scores acquired by one-to-one verification;
- determine whether a value of N has changed from a previous iteration of verification;
- estimate, in response to a determination that the value of N changed, a new distribution of fourth matching scores acquired by one-to-N verification corresponding to the number of verifications N, on the basis of the plurality of third matching scores;
- utilize, in response to a determination that the value of N is unchanged, a previously determined distribution of the fourth matching scores;
- transform the first matching score on the basis of the new distribution of the fourth matching scores in response to the determination that the value of N change, thereby acquiring a second matching score;
- and
- transform the first matching score on the basis of the previously determined distribution of the fourth matching scores in response to the determination that the value of N is unchanged, thereby acquiring the second matching score.
An information processing method that is executed by at least one computer, the information processing method comprising:
- capturing target data for a verification target, wherein capturing the target data comprises capturing an image of the verification target;
- performing one-to-N verification by using the target data acquired from the verification target and N pieces of registration data registered in advance, thereby acquiring a first matching score;
- storing a plurality of third matching scores acquired by one-to-one verification;
- determining whether a value of N has changed from a previous iteration of verification;
- estimating, in response to a determination that the value of N changed, a new distribution of fourth matching scores acquired by one-to-N verification corresponding to the number of verifications N, on the basis of the plurality of third matching scores;
- utilizing, in response to a determination that the value of N is unchanged, a previously determined distribution of the fourth matching scores;
- and
- transforming the first matching score on the basis of the new distribution of the fourth matching scores in response to the determination that the value of N change, thereby acquiring a second matching score;
- and
- transforming the first matching score on the basis of the previously determined distribution of the fourth matching scores in response to the determination that the value of N is unchanged, thereby acquiring the second matching score.
A non-transitory recording medium on which a computer program that allows at least one computer to execute an information processing method is recorded, the information processing method including:
- receiving captured target data for a verification target, wherein the captured target data comprises image data of the verification target;
- performing one-to-N verification by using the target data acquired from the verification target and N pieces of registration data registered in advance, thereby acquiring a first matching score;
- storing a plurality of third matching scores acquired by one-to-one verification;
- determining whether a value of N has changed from a previous iteration of verification;
- estimating, in response to a determination that the value of N changed, a new distribution of fourth matching scores acquired by one-to-N verification corresponding to the number of verifications N, on the basis of the plurality of third matching scores;
- utilizing, in response to a determination that the value of N is unchanged, a previously determined distribution of the fourth matching scores;
- and
- transforming the first matching score on the basis of the new distribution of the fourth matching scores in response to the determination that the value of N change, thereby acquiring a second matching score;
- and
- transforming the first matching score on the basis of the previously determined distribution of the fourth matching scores in response to the determination that the value of N is unchanged, thereby acquiring the second matching score.
Dependencies are inferred from the claim text.