Patent ID: 9299006
Filing Date: 2016-03-29
CPC Classification: G06F,G06K,H04L

Claim Text:
1. An authentication device comprising: a memory; and a processor coupled to the memory and configured to: acquire a plurality of images with regard to a certain living body, extract first biometric information from each of the plurality of images, perform an alignment between the plurality of images, based on the first biometric information, calculate a coefficient based on a feature of the certain living body, the feature being identified by a result of the alignment, generate a normalized image by normalizing at least one image from among the plurality of images based on the coefficient, extract a second biometric information from the normalized image, register the second biometric information and the coefficient into the memory, receive a request for an authentication including another image, generate another normalized image by normalizing the another image based on the coefficient stored in the memory, extract third biometric information from the normalized another image, compare the second biometric information to the third biometric information, determine whether the authentication is successful or not based on a result of a comparison, register an ID associated with the second biometric information and the coefficient into the memory, and when the request including the ID is received, generate the another normalized image by normalizing the another image based on the coefficient associated with the ID in the memory.