Whole-Hand Multispectral Biometric Imaging
First Claim
1. A whole-hand biometric sensor comprising:
- a platen configured to receive a human hand, wherein a surface of the platen defines a target surface;
one or more illumination sources configured to illuminate at least a portion of the target surface;
a first imager configured to receive light from at least a portion of the target surface under a first optical condition;
a second imager configured to receive light from at least a portion of the target surface under a second optical condition, wherein the first optical condition is distinct from the second optical condition; and
an analyzer communicatively coupled with the one or more illumination sources and the plurality of imagers, wherein the analyzer is configured to control the operation of the one or more illumination sources, the first imager, and the second imager in order to produce a multispectral image of an object placed on the target surface from the light received at first imager and the second imager.
2 Assignments
0 Petitions
Accused Products
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.
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Citations
21 Claims
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1. A whole-hand biometric sensor comprising:
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a platen configured to receive a human hand, wherein a surface of the platen defines a target surface; one or more illumination sources configured to illuminate at least a portion of the target surface; a first imager configured to receive light from at least a portion of the target surface under a first optical condition; a second imager configured to receive light from at least a portion of the target surface under a second optical condition, wherein the first optical condition is distinct from the second optical condition; and an analyzer communicatively coupled with the one or more illumination sources and the plurality of imagers, wherein the analyzer is configured to control the operation of the one or more illumination sources, the first imager, and the second imager in order to produce a multispectral image of an object placed on the target surface from the light received at first imager and the second imager. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for collecting a multispectral biometric image of a human hand, the method comprising:
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illuminating at least a portion of a target surface of a platen; receiving light from at least a portion of the target surface under a first optical condition; separately receiving light from at least a portion of the target surface under a second optical condition substantially simultaneously as receiving light from the target surface under a first optical condition, wherein the first optical condition and the second optical condition are distinct; and deriving a multispectral image of an object within the target surface from the light received under either or both of the first optical condition and the second optical condition. - View Dependent Claims (11, 12, 13, 14)
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15. A biometric system comprising:
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illumination means for illuminating a target space defined at least in part by a platen; first imaging means for imaging at least a portion of the target space under a first optical condition and providing a first image; second imaging means for imaging at least a portion of the target space under a second optical condition distinct from the first optical condition and providing a second image; and processing means for controlling the illumination means, the first imaging means and the second imaging means, wherein the processing means is configured to derive a multispectral image from the first image and the second image. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification