Authentication device, authentication system, authentication method, and program

Patent metadata

Field	Value
Publication number	US-11429703-B2
Application number	US-202016747251-A
Country	US
Kind code	B2
Filing date	Jan 20, 2020
Priority date	Sep 28, 2017
Publication date	Aug 30, 2022
Grant date	Aug 30, 2022

Abstract

An authentication device includes an acquisition unit that acquires first image data generated at a first timing and indicating a first face of a living creature to be authenticated, age information indicating an age of the living creature at the first timing, second image data generated at a second timing later than the first timing and indicating a second face of the living creature, and aging information indicating a time period from the first timing to the second timing, and a controller that compares the first image data with the second image data. The controller calculates a similarity between the first face and the second face based on the first image data and the second image data, corrects the similarity based on the age information and the aging information, and determines, based on the corrected similarity, whether the living creature in the first image data is identical to the living creature in the second image data.

First claim

The invention claimed is:

1. An authentication device comprising:
an acquisition unit configured to:
acquire, from an integrated circuit card, first image data generated at a first timing and indicating a first face of a living creature to be authenticated and age information indicating an age of the living creature at the first timing, and
acquires second image data generated at a second timing later than the first timing and indicating a second face of the living creature, and aging information indicating a time period from the first timing to the second timing; and

a controller configured to compare the first image data with the second image data, wherein:
the age information includes:
first information that indicates when the living creature has been born, and
second information that indicates when the integrated circuit card has been issued, the controller is configured to:
calculate a similarity between the first face and the second face based on the first image data and the second image data,
correct the similarity based on the first information, the second information and the aging information, and
determine, based on the corrected similarity, whether the living creature in the first image data is identical to the living creature in the second image data, and
the controller is configured to correct the similarity by using a correction table which comprises correlation amounts for different age groups and different aging time periods.

2. The authentication device according to claim 1 , wherein the controller is configured to determine a correction amount that is used when correcting the similarity, based on the age information and the aging information.

3. The authentication device according to claim 2 , wherein the correction amount is selected from correction information including a plurality of correction amounts, based on the age information and the aging information.

4. The authentication device according to claim 3 , wherein the controller is further configured to:
calculate, for each of a plurality of living creatures not to be authenticated, a similarity between a third face and a fourth face of each of the living creatures not to be authenticated, based on third image data generated at a third timing and indicating the third face of each of the living creatures not to be authenticated and fourth image data generated at a fourth timing later than the third timing and indicating the fourth face of each of the living creatures not to be authenticated,
classify the calculated similarities between the third face and the fourth face into a plurality of groups based on an age of each of the living creatures not to be authenticated in the third image data and a time period from the third timing to the fourth timing, and
calculate, for each of the groups, a correction amount based on the similarities classified into a respective one of groups to generate the correction information.

5. The authentication device according to claim 1 , wherein
the acquisition unit is a communication unit that receives the first image data and the age information, and the second image data and the aging information, from an external device through communication.

6. The authentication device according to claim 1 , wherein
the acquisition unit includes:
a reader configured to read, from the integrated circuit card, the first image data and the age information, and
an image capturer configured to generate the second image data and the aging information.

7. The authentication device according to claim 1 , wherein
the living creature is a human being.

8. The authentication device according to claim 1 ,
wherein
the aging information includes information that indicates when the second image data has been captured.

9. The authentication device according to claim 2 , wherein
as the time period increases, the correction amount increases.

10. The authentication device according to claim 2 , wherein
as an age of the living creature in the first image data decreases, the correction amount increases.

11. An authentication system comprising:
a collation terminal; and
a server, wherein:
the collation terminal includes:
an acquisition unit configured to acquire, from an integrated circuit card, first image data generated at a first timing and indicating a first face of a living creature and age information indicating an age of the living creature at the first timing,
an image capturer that generates, at a second timing later than the first timing, second image data indicating a second face of the living creature and aging information indicating a time period from the first timing to the second timing, and
a communication unit that sends the first image data and the age information, and the second image data and the aging information, and

the server includes:
a communication unit that receives the first image data and the age information, and the second image data and the aging information, and
a controller that calculates a similarity between the first face and the second face based on the first image data and the second image data, corrects the similarity, and determines, based on the corrected similarity, whether the living creature in the first image data is identical to the living creature in the second image data,

the age information includes:
first information that indicates when the living creature has been born, and
second information that indicates when the integrated circuit card has been issued, and

the controller corrects the similarity based on the first information, the second information and the aging information, and
the controller is configured to correct the similarity by using a correction table which comprises correlation amounts for different age groups and different aging time periods.

12. An authentication method comprising:
acquiring, from an integrated circuit card, first image data generated at a first timing and indicating a first face of a living creature, and age information indicating an age of the living creature at the first timing;
acquiring second image data generated at a second timing later than the first timing and indicating a second face of the living creature, and aging information indicating a time period from the first timing to the second timing;
calculating a similarity between the first face and the second face based on the first image data and the second image data;
correcting the similarity; and
determining, based on the corrected similarity, whether the living creature in the first image data is identical to the living creature in the second image data, wherein:
the age information includes:
first information that indicates when the living creature has been born, and
second information that indicates when the integrated circuit card has been issued, and

the similarity is corrected based on the first information, the second information and the aging information, and
the similarity is corrected by using a correction table which comprises correlation amounts for different age groups and different aging time periods.

13. A non-transitory recording medium storing a program that causes a computer to execute:
acquiring, from an integrated circuit card, first image data generated at a first timing and indicating a first face of a living creature, and age information indicating an age of the living creature at the first timing;
acquiring second image data generated at a second timing later than the first timing and indicating a second face of the living creature, and aging information indicating a time period from the first timing to the second timing;
calculating a si

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Maeno Kazuki
• Yoshio Hiroaki
• Tamura Hajime
• Ogura Yasunobu

Classifications

• H04L9/3231

  Biological data, e.g. fingerprint, voice or retina (network architectures or network communication protocols for supporting authentication of entities using biometrical features in a packet data network H04L63/0861) · CPC title

• G06F21/32 Primary

  using biometric data, e.g. fingerprints, iris scans or voiceprints · CPC title

• G06V40/172

  Classification, e.g. identification · CPC title

• G06V40/178

  estimating age from face image; using age information for improving recognition · CPC title