Title:
IRIS AUTHENTICATION DEVICE, IRIS AUTHENTICATION SYSTEM, IRIS AUTHENTICATION METHOD, AND RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2023/073954
Kind Code:
A1
Abstract:
The present invention comprises: an iris image acquisition unit 211 for acquiring an iris image LI in which an iris of a living body is included; a calculation unit 212 for calculating a magnification for the iris image LI from an intended size and the size of an iris region included in the iris image LI; a generation unit 213 for generating a resolution conversion image RI obtained by converting the resolution of the iris image LI in accordance with the magnification; and a post-conversion feature amount extraction unit 214 for extracting a post-conversion feature amount OC that is a feature amount of the resolution conversion image RI.
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Inventors:
TOIZUMI TAKAHIRO (JP)
TSUKADA MASATO (JP)
OGINO YUKA (JP)
ICHINO MASATSUGU (JP)
BOURA TSUBASA (JP)
TSUKADA MASATO (JP)
OGINO YUKA (JP)
ICHINO MASATSUGU (JP)
BOURA TSUBASA (JP)
Application Number:
PCT/JP2021/040123
Publication Date:
May 04, 2023
Filing Date:
October 29, 2021
Export Citation:
Assignee:
NEC CORP (JP)
UNIV ELECTRO COMMUNICATIONS (JP)
UNIV ELECTRO COMMUNICATIONS (JP)
International Classes:
G06T7/00; G06F21/32
Foreign References:
| JP2002259981A | 2002-09-13 | |||
| JP2020071627A | 2020-05-07 | |||
| JP2009282925A | 2009-12-03 | |||
| JP2008090483A | 2008-04-17 |
Attorney, Agent or Firm:
EGAMI, Tatsuo et al. (JP)
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