LONG DISTANCE MULTIMODAL BIOMETRIC SYSTEM AND METHOD

• US 20120200689A1
• Filed: 02/20/2012
• Published: 08/09/2012
• Est. Priority Date: 09/15/2006
• Status: Active Grant

• Current Assignee: Idemia Identity & Security USA, LLC (Advent International Corporation)
• Original Assignee: Identix, Inc. (Advent International Corporation)
• Inventors: Friedman, Marc D., Accomando, Nicholas A., Bashir, Faisal, Casaverde, Pablo, Daly, Stephen F., Hitchcock, David J., Jose, Romina Marie Johnson, McNerney, Tim, Muller, David, Ruzhitsky, Vladimir, Tosa, Yasunari, Usher, David
• Granted Patent: US 8,577,093 B2
• Time in Patent Office: Days
• US Class Current: 348/78
• CPC Class Codes: G06V 40/166 using acquisition arrangements
• CPC Class Codes: G06V 40/19 Sensors therefor

Abstract

A system for multimodal biometric identification has a first imaging system that detects one or more subjects in a first field of view, including a targeted subject having a first biometric characteristic and a second biometric characteristic; a second imaging system that captures a first image of the first biometric characteristic according to first photons, where the first biometric characteristic is positioned in a second field of view smaller than the first field of view, and the first image includes first data for biometric identification; a third imaging system that captures a second image of the second biometric characteristic according to second photons, where the second biometric characteristic is positioned in a third field of view which is smaller than the first and second fields of view, and the second image includes second data for biometric identification. At least one active illumination source emits the second photons.

Claims

1. A system for capturing biometric data from a subject, comprising:

a first imaging system having a first field of view and capturing at least one first image in which a subject is detected;

a second imaging system having a second field of view;

a third imaging system having a third field of view; and

an adjustment system coupled to the second imaging system and the third imaging system, the adjustment system being movable according to a position of the subject detected in the first field of view, movement of the adjustment system causing the subject to be positioned in at least one of the second field of view and the third field of view, the second imaging system capturing at least one second image from the subject when the subject is positioned in the second field of view, and the third imaging system capturing at least one third image from the subject when the subject is positioned in the third field of view, the at least one third image being determined from the at least one second image and providing biometric data for the subject.

2. The system according to claim 1, wherein the adjustment system pans about a vertical axis of rotation and tilts about a horizontal axis of rotation.

3. The system according to claim 2, wherein (x, y) positions for pixels in the first field of view of the first imaging system are mapped to pan angles about the vertical axis of rotation and tilt angles about the horizontal axis of rotation such that the (x, y) positions are positioned in the second field of view of the second imaging system.

4. The system according to claim 1, wherein the second imaging system is in fixed alignment with the third imaging system.

5. The system according to claim 1, wherein the adjustment system includes a movable support on which the second imaging system and the third imaging system are disposed.

6. The system according to claim 1, further comprising an illuminator that propagates an illumination beam, the illuminator being coupled to the adjustment device, the movement of the adjustment system causing the illumination beam to be directed at the subject.

7. The system according to claim 6, wherein the illuminator propagates the illumination beam according to a vertical direction and a horizontal direction, the vertical direction and the horizontal direction being independently adjustable to move the illumination beam.

8. The system according to claim 6, wherein the illuminator is a laser illuminator that propagates a collimated beam having a substantially uniform illumination profile over a distance to the subject.

9. The system according to claim 1, wherein the subject is one of a plurality of subjects detected in the first field of view, and the adjustment system is moved in a sequence according to the position of each subject to position each subject in at least one of the second field of view and the third field of view, the sequence being determined by a scheduler.

10. The system according to claim 9, wherein the scheduler determined the sequence according to one of physical characteristics, behavioral characteristics, and other biometric characteristics of the plurality of subjects.

11. The system according to claim 1, wherein the first imaging system captures images of a fixed scene.

12. The system according to claim 11, wherein the first imaging system includes a plurality of cameras substantially overlapping and the first field of view is 360-degrees.

13. The system according to claim 1, wherein the second field of view is smaller than the first field of view, and the third field of view is smaller than the second field of view.

14. The system according to claim 1, wherein the third imaging system includes dual sensors.

15. The system according to claim 14, wherein the dual sensors reside on a single printed circuit board.

16. The system according to claim 14, wherein the dual sensors are spaced according to a pupillary distance between the subject'"'"'s eyes.

17. The system according to claim 14, wherein the dual sensors capture iris images from the subject, and the iris images contain biometric data.

18. The system according to claim 14, wherein the third imaging system further includes an imaging lens and two beam splitters disposed at an imaging plane of the imaging lens, the beam splitters splitting the eye images and sending each eye image to a corresponding one of the dual sensors.

19. The system according to claim 18, wherein the third imaging system further includes relay lenses modifying a magnification of the eye images for the dual sensors.

20. The system according to claim 14, wherein the third imaging system further includes an imaging lens and a motorized lens that modifies a focus of the imaging lens.

21-81. -81. (canceled)