US 11,682,235 B2
Iris authentication device, iris authentication method and recording medium
Takashi Shibata, Tokyo (JP); Shoji Yachida, Tokyo (JP); Chisato Funayama, Tokyo (JP); Masato Tsukada, Tokyo (JP); Yuka Ogino, Tokyo (JP); Keiichi Chono, Tokyo (JP); Emi Kitagawa, Tokyo (JP); Yasuhiko Yoshida, Tokyo (JP); and Yusuke Mori, Tokyo (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Filed by NEC Corporation, Tokyo (JP)
Filed on Feb. 25, 2022, as Appl. No. 17/680,485.
Application 17/680,485 is a continuation of application No. 17/278,719, previously published as PCT/JP2018/036033, filed on Sep. 27, 2018.
Prior Publication US 2022/0392262 A1, Dec. 8, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G06V 40/18 (2022.01); G06V 40/16 (2022.01); G06V 40/19 (2022.01); G06V 40/70 (2022.01); G06V 40/20 (2022.01)
CPC G06V 40/197 (2022.01) [G06V 40/172 (2022.01); G06V 40/19 (2022.01); G06V 40/25 (2022.01); G06V 40/70 (2022.01)] 12 Claims
OG exemplary drawing
 
1. An authentication device comprising:
a memory configured to store instructions; and
at least one processor configured to execute the instructions to:
acquire a first image by capturing at least a face of an object of authentication;
acquire a second image by capturing one eye or two eyes of the object of authentication;
determine, when the second image includes the one eye, whether the one eye included is a left eye or a right eye of the object of authentication using the first image;
determine, when the second image includes two eyes, which of the two eyes is the left eye and which of the two eyes is the right eye of the object of authentication, using the first image;
calculate a first verification score with respect to the object of authentication by comparing characteristic information on an iris of the one eye or irises of the two eyes in the second image with one or more sets of the characteristic information calculated from irises of eyes of others stored in a storage;
acquire, as second characteristic information, characteristic information on characteristic selected, by a user, from a plurality of sets of characteristics other than the iris of the one eye or the irises of the two eyes with respect to the object of authentication;
calculate a second verification score with respect to the object of authentication by comparing the second characteristic information with one or more sets of the characteristic information on the selected characteristic of the others stored in the storage;
determine whether the object of authentication is a registrant to be authenticated using the first verification score and the second verification score; and
output the second image,
wherein a plurality of reliability scores of right eyes and left eyes pertaining to each of the plurality of registrants are stored in a storage, each of the plurality of reliability scores representing ease of identification between eyes of others, and
wherein the at least one processor is further configured to execute the instructions to:
specify the object of authentication based on the first verification score;
calculate a weighted verification score by weighting the first verification score with a reliability score stored in the storage with respect to the specified object of authentication; and
determine whether the object of authentication is the registrant using the weighted verification score instead of the first verification score and the second verification score.