Patent ID: 11961329
Assignee: NEC CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 4:
5. An authentication method by an authentication device: the authentication device comprising a storage configured to store a plurality of reliability scores of eyes pertaining to each of a plurality of registrants, each reliability score representing an ease of identification of the eye of the registrant to which the reliability score pertains and corresponding eyes of others;, the authentication method comprising:
acquiring a first image and a second image, the first image is a whole body image of an object of authentication and the second image is a left eye region or a right eye region of the object of authentication in the whole body image of the object;
determining whether the eye captured in the second image is of a left eye or a right eye of the object of authentication using the first image;
calculating a verification score with respect to the object of authentication by comparing iris characteristic information on an iris of the eye in the second image with one or more sets of iris characteristic information calculated from irises of the eyes of the others as stored in the storage;
specify the object of authentication based on the verification score;
calculating a weighted verification score by weighting the verification score with the reliability score stored in the storage pertaining to the specified object of authentication and the eye captured in the second image;
determining whether the object of authentication is one of the plurality of registrants to be authenticated using the weighted verification score; and
output an authentication result.