Contactless multispectral biometric capture
AssigneeLumidigm, Inc.
InventorsRobert K. Rowe, Matthew Ennis, Stephen P. Corcoran
Life of this patent
Estimating the term…
Abstract
A number of biometric systems and methods are disclosed. A system according to one embodiment includes an illumination subsystem, an imaging subsystem, and an analyzer. The illumination subsystem is disposed to illuminate a target space. The imaging subsystem is configured to image the target space under distinct optical conditions. The analyzer is provided in communication with the illumination subsystem, the imaging subsystem, and the three-dimensional subsystem. The analyzer also has instructions to operate the subsystems to collect substantially simultaneously a plurality of images of the object disposed at the predetermined spatial location under multispectral conditions.
Claims20
A contactless biometric system comprising:
- an illumination source configured to illuminate a target space with polarized light;
- a first imager configured to receive light scattered from a purported skin site of an individual within at least a portion of the target space under a first polarization condition;
- a second imager configured to receive light scattered from the purported skin site within at least a portion of the target space under a second polarization condition, wherein the first polarization condition is distinct from the second polarization condition;
- and
- an analyzer communicatively coupled with the illumination source, the first imager, and the second imager, wherein the analyzer is configured to control the operation of the illumination source, the first imager, and the second imager in order to perform a biometric function based on the light received at first imager and the second imager.
The contactless biometric system according to claim 10, wherein two of the plurality of illumination sources illuminate the target space with cross-polarized light.
A contactless biometric method comprising:
- illuminating a skin site with polarized light;
- collecting light with a first polarization condition from the skin site;
- collecting light with a second polarization condition from the skin site, wherein the second polarization condition is distinct from the first polarization condition;
- and
- performing a biometric function with the light collected with the first polarization condition and the second polarization condition.
A contactless biometric system comprising:
- an illumination subsystem configured to illuminate a target space with polarized light;
- a first imager configured to receive light scattered from a purported skin site of an individual within at least a portion of the target space under a first polarization condition, wherein the skin site is not in physical contact with the biometric system;
- a second imager configured to receive light scattered from the purported skin site within at least a portion of the target space under a second polarization condition, wherein the first polarization condition is distinct from the second polarization condition;
- and
- an analyzer communicatively coupled with the illumination source, the first imager, and the second imager, wherein the analyzer is configured to control the operation of the illumination source, the first imager, and the second imager in order to perform a biometric function based on the light received at first imager and the second imager.
Dependencies are inferred from the claim text.