SPOOFING DETECTION DEVICE, SPOOFING DETECTION METHOD, AND RECORDING MEDIUM

• US 20170228586A1
• Filed: 10/09/2015
• Published: 08/10/2017
• Est. Priority Date: 10/15/2014
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: MORISHITA, Yusuke
• Granted Patent: US 10,515,262 B2
• Time in Patent Office: Days
• CPC Class Codes: G06T 7/00 Image analysis
• CPC Class Codes: G06V 40/161 Detection; Localisation; Normalisation
• CPC Class Codes: G06V 40/172 Classification, e.g. identification
• CPC Class Codes: G06V 40/40 Spoof detection, e.g. liveness detection
• CPC Class Codes: G06V 40/67 by interactive indications to the user

Abstract

To provide a technology of more accurately detecting spoofing in face authentication, without increasing a scale of a device configuration and a burden on a user. A spoofing detection device includes a facial image sequence acquisition unit, a line-of-sight change detection unit, a presentation information display unit, and a spoofing determination unit. The facial image sequence acquisition unit acquires a facial image sequence indicating the face of a user. The line-of-sight change detection unit detects information about a temporal change in the line-of-sight from the facial image sequence. The presentation information display unit displays presentation information presented to the user as part of an authentication process. The spoofing determination unit determines the likelihood of the face indicated by the facial image sequence being spoofing on the basis of the information about the temporal change in the line-of-sight with respect to the presentation information.

Claims

1. A spoofing detection device comprising:

one or more processors acting as a facial image sequence acquisition unit configured to acquire a facial image sequence indicating a user'"'"'s face;

the one or more processors acting as a line-of-sight change detection unit configured to detect information about temporal line-of-sight change from the facial image sequence;

the one or more processors acting as a presentation information display unit configured to display presentation information presented to the user as part of authentication processing; and

the one or more processors acting as a spoofing determination unit configured to determine a likelihood that a face indicated by the facial image sequence is spoofing, in accordance with the information about temporal line-of-sight change with respect to the presentation information.

2. The spoofing detection device according to claim 1, wherein

the presentation information display unit performs switching of the presentation information, and

the spoofing determination unit determines a likelihood of the spoofing in accordance with relevance of the information about temporal line-of-sight change to switching of the presentation information.

3. The spoofing detection device according to claim 2, wherein

the spoofing determination unit determines a likelihood of the spoofing in accordance with relevance of the information about temporal line-of-sight change to a timing of the switching.

4. The spoofing detection device according to claim 2, wherein

the spoofing determination unit determines a likelihood of the spoofing in accordance with relevance of the information about temporal line-of-sight change to a change in a display position of the presentation information by the switching.

5. The spoofing detection device according to claim 1, wherein

the spoofing determination unit determines a likelihood of the spoofing in accordance with relevance of the information about temporal line-of-sight change to a content of the presentation information.

6. The spoofing detection device according to claim 1, wherein

the line-of-sight change detection unit detects, as the information about temporal line-of-sight change, a time series of information indicating a position of a line-of-sight or a direction of a line-of-sight, or a derivative value of the time series.

9. The spoofing detection device according to claim 3, wherein

the spoofing determination unit determines a likelihood of the spoofing in accordance with relevance of the information about temporal line-of-sight change to a change in a display position of the presentation information by the switching.

10. The spoofing detection device according to claim 2, wherein

the spoofing determination unit determines a likelihood of the spoofing in accordance with relevance of the information about temporal line-of-sight change to a content of the presentation information.

11. The spoofing detection device according to claim 3, wherein

the spoofing determination unit determines a likelihood of the spoofing in accordance with relevance of the information about temporal line-of-sight change to a content of the presentation information.

12. The spoofing detection device according to claim 4, wherein

the spoofing determination unit determines a likelihood of the spoofing in accordance with relevance of the information about temporal line-of-sight change to a content of the presentation information.

13. The spoofing detection device according to claim 2, wherein

the line-of-sight change detection unit detects, as the information about temporal line-of-sight change, a time series of information indicating a position of a line-of-sight or a direction of a line-of-sight, or a derivative value of the time series.

14. The spoofing detection device according to claim 3, wherein

the line-of-sight change detection unit detects, as the information about temporal line-of-sight change, a time series of information indicating a position of a line-of-sight or a direction of a line-of-sight, or a derivative value of the time series.

15. The spoofing detection device according to claim 4, wherein

the line-of-sight change detection unit detects, as the information about temporal line-of-sight change, a time series of information indicating a position of a line-of-sight or a direction of a line-of-sight, or a derivative value of the time series.

16. The spoofing detection device according to claim 5, wherein

the line-of-sight change detection unit detects, as the information about temporal line-of-sight change, a time series of information indicating a position of a line-of-sight or a direction of a line-of-sight, or a derivative value of the time series.

7. A spoofing detection method comprising:

detecting, by a computer device, information about temporal line-of-sight change from a facial image sequence indicating a user'"'"'s face; and

determining, by a computer device, a likelihood that a face indicated by the facial image sequence is spoofing, in accordance with the information about temporal line-of-sight change with respect to presentation information presented to the user as part of authentication processing.

8. A non-transitory computer readable recording medium storing a spoofing detection program causing a computer device to perform:

acquiring a facial image sequence indicating a user'"'"'s face;

detecting information about temporal line-of-sight change from the facial image sequence;

displaying presentation information presented to the user as part of authentication processing; and

determining a likelihood that a face indicated by the facial image sequence is spoofing, in accordance with the information about temporal line-of-sight change with respect to the presentation information.