BACKGROUND

The present disclosure relates to an authentication information processing method, an authentication information processing device, and a non-transitory computer-readable medium that are configured to analyze an image and generate information used for collation of biometric information.

Various fingerprint authentication devices are under consideration. For example, a known biometric identification device uses a pattern of ridges and troughs of a fingerprint extracted from the biometric information, and sweat pores extracted from the biometric information, and performs authentication of authentication information for collation with respect to authentication information for registration.

SUMMARY

In the known biometric identification device, sufficient consideration has not been given from the viewpoint of an improvement in authentication speed.

Various embodiments of the broad principles derived herein provide an authentication information processing method, an authentication information processing device, and a non-transitory computer-readable medium which can generate an authentication information, used for biometric authentication, capable of improving authentication speed in comparison with related art.

Embodiments provide an authentication information processing method for an authentication information processing device including a processor and a memory. The authentication information processing method includes acquiring related information generated for each of a plurality of base points representing feature points of biometric information extracted from an image, for a collation base point and a registration base point. The collation base point is the base point included in authentication information for collation used for biometric authentication. The registration base point is the base point included in authentication information for registration stored in the memory. The related information associates attribute information with a central base point. The attribute information is information that, when the base point that is a target of attention among the plurality of base points is set as the central base point and a predetermined number of the base points arranged around the central base point are set as peripheral base points, indicates a feature of an arrangement on the image of each of the predetermined number of peripheral base points. The authentication information processing method includes determining whether the attribute information associated with the collation base point whose related information is acquired matches the attribute information associated with the registration base point whose related information is acquired, and comparing the collation base point and the registration base point for which it is determined that the respective attribute information match each other, and determining a correspondence between the authentication information for collation and the authentication information for registration used to calculate a degree of similarity.

Embodiments also provide an authentication information processing device that includes a processor and a memory. The memory is configured to store computer-readable instructions that, when executed by the processor, instruct the processor to perform processes. The processes include acquiring related information generated for each of a plurality of base points representing feature points of biometric information extracted from an image, for a collation base point and a registration base point. The collation base point is the base point included in authentication information for collation used for biometric authentication. The registration base point is the base point included in authentication information for registration stored in the memory. The related information associates attribute information with a central base point. The attribute information is information that, when the base point that is a target of attention among the plurality of base points is set as the central base point and a predetermined number of the base points arranged around the central base point are set as peripheral base points, indicates a feature of an arrangement on the image of each of the predetermined number of peripheral base points. The processes include determining whether the attribute information associated with the collation base point whose related information is acquired matches the attribute information associated with the registration base point whose related information is acquired, and comparing the collation base point and the registration base point for which it is determined that the respective attribute information match each other, and determining a correspondence between the authentication information for collation and the authentication information for registration used to calculate a degree of similarity.

Embodiments further provide a non-transitory computer-readable medium storing computer-readable instructions that are executed by a processor provided in an authentication information processing device, the computer-readable instructions, when executed, instructing the processor to perform processes. The processes include acquiring related information generated for each of a plurality of base points representing feature points of biometric information extracted from an image, for a collation base point and a registration base point. The collation base point is the base point included in authentication information for collation used for biometric authentication. The registration base point is the base point included in authentication information for registration stored in the memory. The related information associates attribute information with a central base point. The attribute information is information that, when the base point that is a target of attention among the plurality of base points is set as the central base point and a predetermined number of the base points arranged around the central base point are set as peripheral base points, indicates a feature of an arrangement on the image of each of the predetermined number of peripheral base points. The processes include determining whether the attribute information associated with the collation base point whose related information is acquired matches the attribute information associated with the registration base point whose related information is acquired, and comparing the collation base point and the registration base point for which it is determined that the respective attribute information match each other, and determining a correspondence between the authentication information for collation and the authentication information for registration used to calculate a degree of similarity.

