Systems And Methods Of Biometric Analysis To Determine Lack Of Three-Dimensionality

• US 20180025244A1
• Filed: 07/27/2017
• Published: 01/25/2018
• Est. Priority Date: 01/12/2016
• Status: Active Grant

• Current Assignee: Princeton Identity Inc.
• Original Assignee: Princeton Identity Inc.
• Inventors: Bohl, Andrew James, Ackerman, David Alan, Martin, Christopher Robert
• Granted Patent: US 10,943,138 B2
• Time in Patent Office: Days
• CPC Class Codes: G06T 2207/10016 Video; Image sequence
• CPC Class Codes: G06T 2207/10024 Color image
• CPC Class Codes: G06T 2207/10048 Infrared image
• CPC Class Codes: G06T 2207/10152 Varying illumination
• CPC Class Codes: G06T 2207/30041 Eye; Retina; Ophthalmic
• CPC Class Codes: G06T 7/40 Analysis of texture depth or shape recovery from texture G06T7/529
• CPC Class Codes: G06T 7/62 of area, perimeter, diameter or volume
• CPC Class Codes: G06T 7/90 Determination of colour characteristics
• CPC Class Codes: G06T 7/97 Determining parameters from multiple pictures depth or shape recovery from multiple images G06T7/55; stereo camera calibration G06T7/85
• CPC Class Codes: G06V 10/141 Control of illumination
• CPC Class Codes: G06V 20/64 Three-dimensional objects
• CPC Class Codes: G06V 40/166 using acquisition arrangements
• CPC Class Codes: G06V 40/172 Classification, e.g. identification
• CPC Class Codes: G06V 40/19 Sensors therefor
• CPC Class Codes: G06V 40/193 Preprocessing; Feature extraction
• CPC Class Codes: G06V 40/197 Matching; Classification
• CPC Class Codes: G06V 40/45 Detection of the body part being alive
• CPC Class Codes: G06V 40/70 Multimodal biometrics, e.g. combining information from different biometric modalities
• CPC Class Codes: H04N 23/56 provided with illuminating means

Abstract

Exemplary embodiments are directed to biometric analysis systems generally including one or more illumination sources, a camera, and an analysis module. The illumination sources are configured to illuminate at least a portion of a face of a subject. The camera is configured to capture one or more images of the subject during illumination of the face of the subject. The analysis module is configured to analyze the one or more images captured by the camera to determine an indication of liveliness of the subject and prevent spoofing.

Claims

1. A biometric analysis system, comprising:

an illumination source configured to illuminate an iris of a subject and at least a portion of a surrounding eye, ocular region and face of the subject;

a camera configured to capture one or more images of the subject during illumination of the subject with the illumination source, the one or more images displaying reflected light from the iris and the portion of the surrounding ocular region and face of the subject; and

an analysis module configured to receive as input the one or more images, analyze the reflected light in the one or more images, and determine a lack of three-dimensionality of the subject based on the reflected light in the one or more images of the portion of the surrounding ocular region and face of the subject.

2. The biometric analysis system of claim 1, wherein the illumination source is a near infrared illumination source.

3. The biometric analysis system of claim 1, wherein illumination of the portion of the surrounding ocular region and face of the subject creates a pattern of illumination.

4. The biometric analysis system of claim 1, wherein the analysis module is configured to determine the lack of three-dimensionality of the subject based on a detection of a uniform pattern of illumination distribution of the subject.

5. The biometric analysis system of claim 1, wherein the analysis module is configured to determine whether the lack of three-dimensionality is contraindicative of a live subject and indicative of a facsimile image.

6. The biometric analysis system of claim 1, wherein the analysis module is configured to determine a three-dimensionality of the subject based on a detection of a non-uniform pattern of illumination distribution of the subject corresponding with a face of a living subject.

7. The biometric analysis system of claim 1, wherein the illumination source is configured to illuminate a three-dimensional relief around a temporal edge of an eye socket of the subject, the camera is configured to capture one or more images of the temporal edge of the eye socket of the subject, and the analysis module is configured to analyze the reflected light of the temporal edge of the eye socket of the subject.

8. The biometric analysis system of claim 1, wherein the illumination source is configured to emit a static light to illuminate the iris of a subject and the portion of the surrounding ocular region and face of the subject.

9. The biometric analysis system of claim 8, wherein the static light is a substantially uniform level of illumination.

10. The biometric analysis system of claim 1, wherein the illumination source is configured to emit a dynamic light to illuminate the iris of a subject and the portion of the surrounding ocular region and face of the subject.

11. The biometric analysis system of claim 10, wherein emitting the dynamic light comprises emitting a first illumination level with the illumination source and subsequently emitting a second illumination level with the illumination source.

12. The biometric analysis system of claim 11, wherein the second illumination level is greater than the first illumination level.

13. The biometric analysis system of claim 11, wherein the second illumination level is lower than the first illumination level.

14. The biometric analysis system of claim 11, wherein the camera is configured to capture one or more images of the subject during illumination of the subject at the first illumination level, and capture one or more images of the subject during illumination of the subject at the second illumination level.

15. The biometric analysis system of claim 14, wherein the analysis module is configured to receive as input the one or more images at the first illumination level and the one or more images at the second illumination level, analyze the reflected light in the one or more images, and determine the lack of three-dimensionality of the subject based on a change in characteristics in a pattern of illumination distribution of the subject.

16. The biometric analysis system of claim 1, comprising one or more databases configured to electronically store data corresponding to biometric data of subjects.

17. A method of biometric analysis, comprising:

illuminating an iris of a subject and at least a portion of a surrounding eye, ocular region and face of the subject with an illumination source of a biometric analysis system;

capturing one or more images of the subject with a camera of the biometric analysis system during illumination of the subject with the illumination source, the one or more images displaying reflected light from the iris and the portion of the surrounding ocular region and face of the subject;

receiving as input at an analysis module of the biometric analysis system the one or more images;

analyzing the reflected light in the one or more images with the analysis module of the biometric analysis system; and

determining a lack of three-dimensionality of the subject with the analysis module of the biometric analysis system based on the reflected light in the one or more images of the portion of the surrounding ocular region and face of the subject.

18. The method of claim 17, comprising determining the lack of three-dimensionality of the subject with the analysis module based on a detection of a uniform pattern of illumination distribution of the subject.

20. The method of claim 17, comprising determining a three-dimensionality of the subject with the analysis module based on a detection of a non-uniform pattern of illumination distribution of the subject corresponding with a face of a living subject.

19. (canceled)

21-26. -26. (canceled)

27. A non-transitory computer-readable medium storing instructions for biometric analysis that are executable by a processing device, wherein execution of the instructions by the processing device causes the processing device to:

illuminate an iris of a subject and at least a portion of a surrounding eye, ocular region and face of the subject with an illumination source of a biometric analysis system;

capture one or more images of the subject with a camera of the biometric analysis system during illumination of the subject with the illumination source, the one or more images displaying reflected light from the iris and the portion of the surrounding ocular region and face of the subject;

receive as input at an analysis module of the biometric analysis system the one or more images;

analyze the reflected light in the one or more images with the analysis module; and

determine a lack of three-dimensionality of the subject with the analysis module based on the reflected light in the one or more images of the portion of the surrounding ocular region and face of the subject.

28-111. -111. (canceled)