Biometric Enrollment Systems And Methods

• US 20170286790A1
• Filed: 03/31/2017
• Published: 10/05/2017
• Est. Priority Date: 03/31/2016
• Status: Active Grant

• Current Assignee: Princeton Identity Inc.
• Original Assignee: Princeton Identity Inc.
• Inventors: Mapen, Barry E., Ackerman, David Alan, Bergen, James Russell, Perna, Steven N.
• Granted Patent: US 10,366,296 B2
• Time in Patent Office: Days
• CPC Class Codes: G06V 40/168 Feature extraction; Face representation
• CPC Class Codes: G06V 40/197 Matching; Classification
• CPC Class Codes: G06V 40/50 Maintenance of biometric data or enrolment thereof

Abstract

Exemplary embodiments are directed to biometric enrollment systems including a camera and an image analysis module. The camera configured is to capture a probe image of a subject, the probe image including an iris of the subject. The image analysis module is configured to determine an iris characteristic of the iris in the probe image. The image analysis module is configured to analyze the probe image relative to a first enrollment image to determine if a match exists based on the iris characteristic. If the match exists, the image analysis module is configured to electronically store the matched probe image as an accepted image. The image analysis module is configured to select and establish the accepted image as a second enrollment image if the accepted image meets enrollment image criteria.

Claims

1. A biometric enrollment system, comprising:

a camera configured to capture a probe image of a subject, the probe image including an iris of the subject; and

an image analysis module configured to (i) determine an iris characteristic of the iris in the probe image, (ii) analyze the probe image relative to a first enrollment image to determine if a match exists based on the iris characteristic, (iii) if the match exists, electronically store the matched probe image as an accepted image, and (iv) select and establish the accepted image as a second enrollment image if the accepted image meets enrollment image criteria.

2. The biometric enrollment system of claim 1, wherein the iris characteristic is a normalized iris texture ratio (NITR) of the iris.

3. The biometric enrollment system of claim 1, wherein the enrollment image criteria includes whether the iris characteristic of the iris in the probe image is within a coverage area of the first enrollment image.

4. The biometric enrollment system of claim 3, wherein the coverage area of the first enrollment image defines a variation in the iris characteristic of the iris acceptable for a match with the first enrollment image.

5. The biometric enrollment system of claim 3, wherein the enrollment image criteria includes whether the iris characteristic of the iris in the probe image meets an iris biometric standard.

6. The biometric enrollment system of claim 5, wherein the iris biometric standard is at least one of International Organization of Standardization (ISO) 19794 or ISO 29794.

7. The biometric enrollment system of claim 1, wherein the first enrollment image is electronically stored in a first bin of a predetermined number of bins, an iris characteristic of the iris in the first enrollment image corresponding to a range of the iris characteristic of the first bin.

8. The biometric enrollment system of claim 7, wherein the image analysis module is configured to electronically store the accepted image in a second bin of the predetermined number of bins, the iris characteristic of the iris in the accepted image corresponding to a range of the iris characteristic of the second bin.

9. The biometric enrollment system of claim 8, wherein the first enrollment image in the first bin and the second enrollment image in the second bin provide enrollment images in different ranges of the iris characteristic.

10. The biometric enrollment system of claim 1, comprising one or more illumination sources configured to illuminate the iris of the subject.

11. The biometric enrollment system of claim 1, wherein the second enrollment image includes a coverage area partially overlapping a coverage area of the first enrollment image.

12. The biometric enrollment system of claim 1, wherein if the match does not exist, the image analysis module is configured to electronically store the probe image as a rejected image in a database.

13. The biometric enrollment system of claim 1, wherein the first enrollment image, the accepted image, and the second enrollment image are electronically stored in a database.

14. A method of biometric system enrollment, comprising:

capturing a probe image of a subject with a camera, the probe image including an iris of the subject;

determining an iris characteristic of the iris in the probe image with an image analysis module;

analyzing the probe image relative to a first enrollment image to determine if a match exists based on the iris characteristic;

if the match exists, electronically storing the matched probe image as an accepted image;

determining if the accepted image meets enrollment image criteria; and

if the accepted image meets the enrollment image criteria, selecting and establishing the accepted image as a second enrollment image.

15. The method of claim 14, comprising illuminating the iris of the subject with one or more illumination sources.

16. The method of claim 14, wherein determining if the accepted image meets the enrollment image criteria comprises determining whether the iris characteristic of the iris in the probe image is within a coverage area of the first enrollment image.

17. The method of claim 14, wherein the coverage area of the first enrollment image defines a variation in the iris characteristic of the iris acceptable for a match with the first enrollment image.

18. The method of claim 16, wherein determining if the accepted image meets the enrollment image criteria comprises determining whether the iris characteristic of the iris in the probe image meets an iris biometric standard.

19. The method of claim 18, wherein the iris biometric standard is at least one of International Organization of Standardization (ISO) 19794 or ISO 29794.

20. The method of claim 14, wherein if the match does not exist, the method comprises electronically storing the probe image as a rejected image in a database.

21. The method of claim 14, comprising electronically storing the first enrollment image, the accepted image, and the second enrollment image in a database.

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

capture a probe image of a subject with a camera, the probe image including an iris of the subject;

determine an iris characteristic of the iris in the probe image with an image analysis module;

analyze the probe image relative to a first enrollment image to determine if a match exists based on the iris characteristic;

if the match exists, electronically store the matched probe image as an accepted image;

determine if the accepted image meets enrollment image criteria; and

if the accepted image meets the enrollment image criteria, select and establish the accepted image as a second enrollment image.

23. A biometric enrollment system, comprising:

a camera configured to capture a probe image of a subject; and

an image analysis module configured to (i) determine a subject characteristic of the in the probe image, (ii) analyze the probe image relative to a first enrollment image to determine if a match exists based on the subject characteristic, (iii) if the match exists, electronically store the matched probe image as an accepted image, and (iv) select and establish the accepted image as a second enrollment image if the accepted image meets enrollment image criteria.

24. The biometric enrollment system of claim 23, wherein the subject characteristic is a normalized iris texture ratio (NITR) of an iris of the subject.

25. The biometric enrollment system of claim 23, wherein the enrollment image criteria includes whether the subject characteristic in the probe image is within a coverage area of the first enrollment image.

26. The biometric enrollment system of claim 25, wherein the coverage area of the first enrollment image defines a variation in the subject characteristic acceptable for a match with the first enrollment image.

27. The biometric enrollment system of claim 23, wherein the enrollment image criteria includes whether the subject characteristic in the probe image meets a biometric standard.

28. The biometric enrollment system of claim 27, wherein the biometric standard is at least one of International Organization of Standardization (ISO) 19794 or ISO 29794.

29. The biometric enrollment system of claim 23, wherein the subject characteristic is a facial characteristic of the subject.

30. The biometric enrollment system of claim 29, wherein the facial characteristic of the subject is at least one of a muscle landmark or a bone landmark of the subject.