Contactless multispectral biometric capture
First Claim
Patent Images
1. A biometric system comprising:
- one or more illumination sources configured to illuminate at least a portion of a target space;
a first imager configured to receive light from at least a portion of the target space under a first optical condition;
a second imager configured to receive light from at least a portion of the target space 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 a skin site of a purported individual placed within the target space from the light received at first imager and the second imager, wherein the analyzer is configured to derive spatially distributed multispectral characteristics from the one or more multispectral images.
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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.
300 Citations
106 Claims
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1. A biometric system comprising:
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one or more illumination sources configured to illuminate at least a portion of a target space; a first imager configured to receive light from at least a portion of the target space under a first optical condition; a second imager configured to receive light from at least a portion of the target space 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 a skin site of a purported individual placed within the target space from the light received at first imager and the second imager, wherein the analyzer is configured to derive spatially distributed multispectral characteristics from the one or more multispectral images. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for collecting a multispectral biometric image, the method comprising:
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illuminating at least a portion of a target space; receiving light from at least a portion of the target space under a first optical condition; separately receiving light from at least a portion of the target space under a second optical condition substantially simultaneously as receiving light from the target space under the first optical condition, wherein the first optical condition and the second optical condition are distinct; deriving a multispectral image of a skin site of a purported individual within the target space from the light received under either or both of the first optical condition and the second optical condition; and deriving spatially distributed multispectral characteristics from the multispectral image. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A biometric system comprising:
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illumination means for illuminating a target space; 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 of a skin site of a purported individual from the first image and the second image, the processing means further for deriving spatially distributed multispectral characteristics from the multispectral image. - View Dependent Claims (19, 20, 21)
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22. A biometric system comprising:
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one or more illumination sources configured to illuminate a target space; a plurality of imagers configured to receive light from the target space under multispectral conditions, wherein each imager is configured to receive light from a different subspace of said target space; and an analyzer communicatively coupled with the one or more illumination sources and the plurality of imagers, the analyzer configured to control the operation of the one or more illumination sources and the plurality of imagers in order to produce one or more multispectral image of a skin site of a purported individual placed within the target space from the light received at any or all the imagers, wherein the analyzer includes instructions to derive spatially distributed multispectral characteristics from the multispectral image. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A biometric system comprising:
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one or more illumination sources configured to illuminate a target space; a first imager that receives light from a first subspace of said target space under multispectral conditions; a second imager that receives light from a second subspace of said target space under multispectral conditions, wherein the first imager and the second imager receive light substantially simultaneously; and an analyzer communicatively coupled with the one or more illumination sources, the first imager, and the second imager, the analyzer configured to control the operation of the one or more illumination sources, the first imager, and the second imager in order to derive a multispectral image of a skin site of a purported individual placed within the target space from light received at either or both of the first imager and the second imager, wherein the analyzer includes instructions to derive spatially distributed multispectral characteristics from the multispectral image. - View Dependent Claims (33, 34, 35, 36, 37)
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38. A method for collecting a biometric image comprising:
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illuminating a target space with one or more illumination sources; receiving light from a first subspace of said target space with a first imager; receiving light from a second subspace of said target space with a second imager; deriving a multispectral image of at least a portion of a skin site of a purported individual within said target space from the light received at either or both of the first imager and the second imager; and deriving spatially distributed multispectral characteristics from the multispectral image. - View Dependent Claims (39, 40, 41, 42, 43)
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44. A biometric system comprising:
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a platen adapted for placement of a purported skin site by an individual; one or more illumination sources configured to illuminate the skin site; a first imager configured to receive light from a first zone of said skin site under multispectral conditions; a second imager configured to receive light from a second zone of said skin site under multispectral conditions; and an analyzer communicatively coupled with the one or more illumination sources, the first imager, and the second imager, the analyzer configured to control the operation of the one or more illumination sources, the first imager, and the second imager in order to derive a multispectral image of the skin site from light received at either or both of the first imager and the second imager, wherein the analyzer includes instructions to derive spatially distributed multispectral characteristics from the multispectral image. - View Dependent Claims (45, 46, 47)
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48. A biometric system comprising:
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one or more illumination sources configured to illuminate a target space; a plurality of imagers configured to receive light from the target space under multispectral conditions, wherein at least one imager receives light with a multispectral condition distinct from the multispectral condition received with at least one other imager; 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 and the plurality of imagers in order to produce a multispectral image of a skin site of a purported individual placed within the target space from the light received at any or all the imagers, wherein the analyzer includes instructions to derive spatially distributed multispectral characteristics from the multispectral image. - View Dependent Claims (49, 50, 51, 52)
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53. A biometric system comprising:
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one or more illumination sources configured to illuminate a target space; a first imager configured to receive light from said target space under a first optical condition; a second imager configured to receive light from said target space under a second optical condition; and an analyzer communicatively coupled with the one or more illumination sources, the first imager, and the second imager, the analyzer configured to control the operation of the one or more illumination sources, the first imager, and the second imager in order to derive a multispectral image of a skin site of a purported individual placed within the target space from light received at either or both of the first imager and the second imager, wherein the analyzer includes instructions to derive spatially distributed multispectral characteristics from the multispectral image. - View Dependent Claims (54, 55)
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56. A method for collecting a biometric image comprising:
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illuminating a target space; receiving light from said target space under a first optical condition; receiving light from said target space under a second optical condition; deriving a multispectral image of a skin site of a purported individual within said target space from the light received at either or both of the first imager and the second imager; and deriving spatially distributed multispectral characteristics from the multispectral image. - View Dependent Claims (57, 58, 59, 60, 61, 62, 63)
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64. A contactless biometric system comprising:
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one or more illumination sources configured to illuminate a target space located in free space; one or more imagers configured to collect light from at least a portion of the target space under multispectral conditions; an analyzer communicatively coupled with the one or more illumination sources and the one or more imagers, the analyzer configured to control the operation of the one or more illumination sources and the one or more imagers in order to derive a multispectral image of a skin site of a purported individual placed within the target space and imaged by the one or more imagers, wherein the analyzer includes instructions to derive spatially distributed multispectral characteristics from the multispectral image. - View Dependent Claims (65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75)
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76. A method for collecting a biometric image comprising:
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detecting the presence of a skin site of a purported individual within a target space located in free space; illuminating the skin site within the target space with one or more illumination sources; receiving light from the target space at one or more imagers under multispectral conditions; deriving a multispectral image of the skin site within said target space from the light received at the one or more imagers; and deriving spatially distributed multispectral characteristics from the multispectral image. - View Dependent Claims (77, 78, 79, 80)
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81. A contactless biometric system comprising:
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an illumination subsystem disposed to illuminate a predetermined spatial location in free space; an imaging subsystem disposed to collect light emanating from the predetermined spatial location; sensing means for sensing when a purported skin site is placed substantially within the predetermined spatial location; and an analyzer in communication with the illumination subsystem, the imaging subsystem, and the sensing subsystem, wherein the analyzer comprises instructions to operate the illumination subsystem, the imaging subsystem, and the sensing subsystem to derive a multispectral image of a skin site of a purported individual placed within the target space and imaged by the one or more imagers, wherein the sensing means includes at least one imager and a color filter array with a plurality of color mosaics, wherein each pixel of the imager corresponds to one of the plurality of color mosaics such that each pixel detects light associated with the corresponding color, and wherein the analyzer includes instructions to monitor the levels of blue light received at the imager through the color filter array and compute a mathematical function on the levels of blue light in proportion with levels of other light. - View Dependent Claims (82, 83, 84, 85, 86)
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87. A biometric system comprising:
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one or more illumination sources configured to illuminate a target space located in free space; one or more imagers configured to collect light from at least a portion of the target space under multispectral conditions; a user interface configured to communicate the proximate location of the target space in free space; and an analyzer communicatively coupled with the one or more illumination sources and the one or more imagers, the analyzer includes instructions to illuminate the target space with the one or more illumination sources, and derive a multispectral image of a skin site of a purported individual placed within the target space and imaged by the one or more imagers, wherein the analyzer includes instructions to derive spatially distributed multispectral characteristics from the multispectral image. - View Dependent Claims (88, 89, 90, 91)
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92. A method for collecting a biometric image comprising:
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providing an indication of the proximate location of a target space in free space; illuminating a skin site of a purported individual within the target space with one or more illumination sources; receiving light from the target space at one or more imagers under multispectral conditions; deriving a multispectral image of the skin site within said target space from the light received at the one or more imagers; and deriving spatially distributed multispectral characteristics from the multispectral image. - View Dependent Claims (93, 94, 95, 96, 97, 98, 99)
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100. A biometric system comprising:
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conveying means for conveying an indication of the proximate location of a target space in free space; illuminating means for illuminating at least a portion of the target space; imaging means for receiving light from the target space under multispectral conditions; logic means for deriving a multispectral image of a skin site of a purported individual within said target space from the light received by the imaging means, the logic means further for deriving spatially distributed multispectral characteristics from the multispectral image.
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101. A biometric system comprising:
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a platen configured to receive a human hand; one or more illumination sources configured to illuminate a hand placed on the platen; a first imager configured to receive light from a first portion of the hand under multispectral conditions; a second imager configured to receive light from a second portion of the hand under multispectral conditions; and an analyzer communicatively coupled with the one or more illumination sources, the first imager, and the second imager, the analyzer configured to control the operation of the one or more illumination sources, the first imager, and the second imager in order to derive a multispectral image of the first portion of the hand from light received at first imager and derive a multispectral image of the second portion of the hand from light received at second imager, wherein the analyzer includes instructions to derive spatially distributed multispectral characteristics from the multispectral image. - View Dependent Claims (102)
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103. A biometric system comprising:
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one or more illumination sources configured to illuminate a hand placed substantially within target space in free space; a plurality of imagers configured to receive light from portions of a hand placed substantially within the target space under multispectral conditions; an analyzer communicatively coupled with the one or more illumination sources and the plurality of imagers, the analyzer configured to control the operation of the one or more illumination sources and the plurality of imagers in order to derive a multispectral image of the portions of the hand from light received at the plurality of imagers, wherein the analyzer includes instructions to derive spatially distributed multispectral characteristics from the multispectral image. - View Dependent Claims (104, 105)
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106. A method for collecting a biometric image of a hand comprising:
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providing a target space located in free space for the placement of a human hand by an individual; illuminating a hand within the target space using one or more illumination sources; receiving light from the hand under multispectral conditions using one or more imagers; deriving at least one multispectral image of at least one portion of the hand within the target space from the received light; and deriving spatially distributed multispectral characteristics from the multispectral image.
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Specification