Method and system for generating a combined retina/iris pattern biometric

• US 7,248,720 B2
• Filed: 03/23/2005
• Issued: 07/24/2007
• Est. Priority Date: 10/21/2004
• Status: Active Grant

• Current Assignee: Idemia Identity & Security USA, LLC (Advent International Corporation)
• Original Assignee: Retica Systems, Inc. (Advent International Corporation)
• Inventors: Heacock, Gregory L., Muller, David F., Usher, David B.
• Primary Examiner(s): Bella; Matthew C.
• Assistant Examiner(s): PERUNGAVOOR, SATHYANARAYA V
• Application Number:
  US11/087,205
• Publication Number:
  US 20060088193A1
• Time in Patent Office: 853 Days
• Field of Search: 382/117
• US Class Current: 382/117
• CPC Class Codes: G06V 40/18 Eye characteristics, e.g. of the iris

Abstract

A method and system generates correlated biometric information by capturing an image of a retinal vessel pattern and simultaneously capturing an image of an iris minutia pattern. Retinal biometric data and iris biometric data are generated from the images. The retinal biometric data and the iris biometric data are then combined or linked to maintain the correlation between the two biometrics.

Claims

1. A method for generating biometric information comprising:

directing light of a first wavelength to reflect from a retina;

directing light of a second wavelength different from the first wavelength to reflect from an iris at or near the same time that light of the first wavelength is directed to reflect from the retina; and

capturing a combined image representing light reflected from the retina and light reflected from the iris to provide biometric information.

2. A method for generating biometric information as recited in claim 1 including using the light reflected from the retina to define an inner perimeter of the iris.

3. A method for generating biometric information as recited in claim 1 wherein the light reflected from the retina is used to define an outer perimeter of the pupil.

4. A method for generating biometric information comprising:

illuminating the retina with light of a first wavelength to reflect light from a retina;

illuminating the iris with light of a second wavelength different from the first wavelength to reflect the light from an iris;

capturing an image of a retinal vessel pattern;

capturing an image of an iris minutia pattern at or near the same time that the image of the retinal vessel pattern is captured, the iris minutia pattern having a defined correlation with the captured retinal vessel pattern; and

generating a retina biometric representing at least a portion of the captured retinal vessel pattern and an iris biometric representing at least a portion of an iris minutia pattern, the retina biometric and the iris biometric being correlated.

5. A method for generating biometric information as recited in claim 4 wherein the retinal vessel pattern image and iris minutia pattern image are captured by separate image capturing devices.

6. A method for generating biometric information as recited in claim 4 wherein the retinal vessel pattern image and iris minutia pattern image are captured within two seconds of each other.

7. A method for generating biometric information comprising:

illuminating the retina with light of a first wavelength to capture an image of a retinal vessel pattern;

illuminating the iris with light of a second wavelength different than the first wavelength to capture an iris minutia pattern;

capturing an image of a retinal vessel pattern with a first image capturing device;

capturing an image of an iris minutia pattern with a second image capturing device at or near the same time that the image of the retinal vessel pattern is captured;

generating a retina biometric representing at least a portion of the captured retinal vessel pattern;

generating an iris biometric representing at least a portion of the captured iris minutia pattern; and

linking the retina biometric with the iris biometric.

8. A method for generating biometric information as recited in claim 7 wherein the retinal vessel pattern image and iris minutia pattern image are captured within two seconds of each other.

9. A method for generating biometric information as recited in claim 7 wherein the retina and iris biometrics are linked so that the biometrics can be analyzed as one biometric or as two separate biometrics.

10. A method for generating biometric information comprising:

capturing an image of a retinal vessel pattern;

capturing an image of an iris minutia pattern at the same time or near the time that the image of the retinal vessel pattern is captured;

generating a retina biometric representing at least a portion of the captured retinal vessel pattern;

generating an iris biometric representing at least a portion of the captured iris minutia pattern;

linking the retina biometric with the iris biometric; and

using information derived from the captured retinal vessel pattern to determine a rotational angle for the captured iris minutia pattern.

11. A method for generating biometric information comprising:

capturing an image of a retinal vessel pattern;

capturing an image of an iris minutia pattern at the same time or near the time that the image of the retinal vessel pattern is captured;

generating a retina biometric representing at least a portion of the captured retinal vessel pattern;

generating an iris biometric representing at least a portion of the captured iris minutia pattern;

linking the retina biometric with the iris biometric; and

using information derived from the retina biometric to determine a rotational angle for the captured iris minutia pattern.

12. A method for generating biometric information comprising:

directing an eye to look at a fixed location;

illuminating the retina with light of a first wavelength to reflect light from a retina;

illuminating the iris with light of a second wavelength different from the first wavelength to reflect the light from an iris;

capturing an image of a retinal vessel pattern while the eye is directed to look at the fixed location;

capturing an image of an iris minutia pattern while the eye is directed to look at the fixed location and at or near the same time that the image of the retinal vessel pattern is captured;

generating a retina biometric representing at least a portion of the captured retinal vessel pattern; and

generating an iris biometric representing at least a portion of the captured iris minutia pattern.

13. A method for generating biometric information as recited in claim 12 including correlating retina biometric information with iris biometric information.

14. A method for generating biometric information as recited in claim 12 including linking the retina biometric and the iris biometric.

15. A method for generating biometric information as recited in claim 14 wherein the retina and iris biometrics are linked in a manner to allow the biometrics to be analyzed as one biometric or as two separate biometrics.

16. A method for generating biometric information as recited in claim 12 wherein the first wavelength is within 50 nm of 660 nm and the second wavelength is within 50 nm of 800 nm.

17. A method for generating biometric information comprising:

illuminating the retina with light of a first wavelength;

illuminating the iris with light of a second wavelength different than the first wavelength at or near the same time that the retina is illuminated;

passing light of the first wavelength reflected from the retina to an image capturing device without passing light of the second wavelength to the image capturing device to capture a retinal vessel pattern;

capturing an image of an iris minutia pattern from light reflected from the iris;

generating a retina biometric representing at least a portion of the captured retinal vessel pattern; and

generating an iris biometric representing at least a portion of the captured iris minutia pattern.

18. A method for generating biometric information as recited in claim 17 including correlating retina biometric information with iris biometric information.

19. A method for generating biometric information as recited in claim 17 including linking the retina biometric and the iris biometric.

20. A method for generating biometric information as recited in claim 19 wherein the retina and iris biometrics are linked in a manner to allow the biometrics to be analyzed as one biometric or as two separate biometrics.

21. A system for generating biometric information comprising:

a source of illumination light of a first wavelength for illuminating the retina;

a source of illumination light of a second wavelength different from the first wavelength for illuminating the iris;

a first image capturing device aligned relative to a first axis to capture a retinal vessel pattern from light reflected from a retina;

a second image capture device aligned relative to a second axis to capture an iris minutia pattern from light reflected from an iris;

a partial reflector on which light reflected from the retina impinges, the partial reflector passing light of the first wavelength to the image capture device and reflecting substantially all wavelengths of light other than the first wavelength of light; and

a controller for controlling the first image capturing device and the second image capturing device to capture an image of the retina and iris.