Title:
BIOMETRIC AUTHENTICATION DEVICE AND METHOD
Document Type and Number:
WIPO Patent Application WO/2018/185992
Kind Code:
A1
Abstract:
Provided is a biometric authentication device which is capable of performing authentication with high accuracy, even when a lighting environment or an image capturing device differs at the times of registration and authentication. The present invention is provided with: an image input unit which captures an image of a finger under ambient light and acquires at least one biometric image; an authentication processing unit which processes the biometric image; and a storage unit which stores registration information on at least one of a plurality of biometric features obtained from the finger. The authentication processing unit uses the registration information in the storage unit, generates a color conversion matrix which minimizes a difference in representative color between a biometric image that is a reference and a biometric image at the time of authentication, uses the generated color conversion matrix to generate a color-converted biometric image (S105), extracts a feature amount (S105), and calculates the similarity with the registration information to perform collation (S106).
Inventors:
NAKAZAKI KEIICHIRO (JP)
MATSUDA YUSUKE (JP)
MIURA NAOTO (JP)
NONOMURA YO (JP)
NAGASAKA AKIO (JP)
MATSUDA YUSUKE (JP)
MIURA NAOTO (JP)
NONOMURA YO (JP)
NAGASAKA AKIO (JP)
Application Number:
PCT/JP2018/000829
Publication Date:
October 11, 2018
Filing Date:
January 15, 2018
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
G06T7/00; G06T1/00
Domestic Patent References:
| WO2012014300A1 | 2012-02-02 |
Foreign References:
| JP2016096987A | 2016-05-30 | |||
| JP2013210845A | 2013-10-10 | |||
| JP2013207721A | 2013-10-07 | |||
| JP2007087253A | 2007-04-05 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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