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US5163094A
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Method for identifying individuals from analysis of elemental shapes derived from biosensor data
Assignee: INFRARED INDENTIFICATION Inc
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Filing: 1991-03-20
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Granted: 1992-11-10
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Expires: 2011-03-20
Abstract
Abstract A method and apparatus for identifying individuals is characterized by the analysis of elemental shapes derived from biosensor data presented in n dimensions, particularly facial thermograms. A thermal image of the individual's face is generated in accordance with the thermal energy patterns thereof. The thermal image is converted to a digital representation comprising a matrix of pixels, the intensity of each pixel corresponding with the level of thermal energy of a corresponding portion of the image. The digital representation of the image is normalized for size and equalized to a standard histogram to produce an image containing elemental shapes comprising contours corresponding with unique structural features of the individual.
Inventors
- 👤 Francine J. Prokoski
- 👤 Jeffrey S. Coffin
- 👤 Robert B. Riedel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:51
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/01; A61B5/015; A61B5/117; A61B5/1171; G; G06; G06V; G06V40/00; G06V40/10; G06V40/16; G07; G07C; G07C9/00; G07C9/20; G07C9/22; G07C9/25; G07C9/253
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
123 words
A method for identifying individuals from biosensor data, comprising the steps of (a) generating a thermal image of a portion of an individual's body in accordance with the thermal energy patterns thereof; (b) processing said thermal image to produce a digital representation thereof, said digital representation comprising a matrix of pixels, the intensity of each pixel corresponding with the level of thermal energy of a corresponding portion of said image; (c) normalizing said image in order to eliminate variables therefrom, thereby to produce an image containing elemental shapes comprising contours corresponding with unique structural features of the individual; and (d) storing said normalized digital representation of said image, whereby a unique digital representation is created and stored for every individual for subsequent identification.
Claim 2
Independent Claim
123 words
A method for identifying individuals from biosensor data, comprising the steps of (a) generating a thermal image of a portion of an individual's body in accordance with the thermal energy patterns thereof; (b) processing said thermal image to produce a digital representation thereof, said digital representation comprising a matrix of pixels, the intensity of each pixel corresponding with the level of thermal energy of a corresponding portion of said image; (c) normalizing said image in order to eliminate variables therefrom, thereby to produce an image containing elemental shapes comprising contours corresponding with unique structural features of the individual; and (d) storing said normalized digital representation of said image, whereby a unique digital representation is created and stored for every individual for subsequent identification.
Claim 3
Dependent Claim
27 words
A method as defined in claim 1, wherein said normalizing step includes cropping said image to an area of minimum thermal variation over time and maximum uniqueness.
Claim 4
Dependent Claim
24 words
A method as defined in claim 2, wherein said cropped image area comprises a portion of the individual's face containing the eyes and nose.
Claim 5
Dependent Claim
44 words
A method as defined in claim 2, wherein said cropping step is performed by (1) detecting the edges of said image; (2) defining vertical and horizontal axes of said image with respect to intensity levels thereof; and (3) deleting excess portions of said image.
Claim 6
Dependent Claim
41 words
A method as defined in claim 2, wherein said normalizing step further includes the step of standardizing said image for size by measuring a field of interest and scaling said field to preserve and reconstruct said image to a standard size.
Claim 7
Dependent Claim
32 words
A method as defined in claim 5, wherein said normalizing step further includes the step of equalizing said image to a standard histogram in accordance with specific feature areas of said image.
Claim 8
Dependent Claim
23 words
A method as defined in claim 1, and further comprising the step of identifying regions of said image containing elemental shapes of interest.
Claim 9
Dependent Claim
36 words
A method as defined in claim 7, and further comprising the step of storing at least a portion of each region containing an elemental shape with respect to its location on the image in a memory.
Claim 10
Dependent Claim
35 words
A method as defined in claim 8, wherein each of said regions is defined by one of geometry, mathematics, and as a bit-map replica of said region, thereby to provide a signature of the individual.
Claim 11
Dependent Claim
35 words
A method as defined in claim 9, and further comprising the step of comparing a previously defined reference signature of an individual with a currently defined signature of the individual to confirm the individual's identity.
Claim 12
Dependent Claim
16 words
A method as defined in claim 10, wherein said comparison step is accomplished using correlation techniques.
Claim 13
Dependent Claim
23 words
A method as defined in claim 10, wherein said comparison step comprises matching the location and configuration of each of said elemental shapes.
Claim 14
Dependent Claim
39 words
A method as defined in claim 12, and further comprising the step of adaptively establishing a threshold level of match to confirm the individual's identity, whereby the threshold level must be met in order to confirm the individual's identity.
Claim 15
Dependent Claim
37 words
A method as defined in claim 13, wherein said portion of the individual's body comprises the face, and further wherein said normalized image contains elemental shapes corresponding with at least the eyes and nose of the individual.
References Cited (Backward Citations)
US3611290A
Cited
US3805238A
Cited
US4135147A
Cited
US4300160A
Cited
US4646352A
Cited
US4525859A
Cited
US4699149A
Cited
US4975969A
Cited
US4858000A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-11-10 | 1996-05-11 | 1996-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-10 | 2000-05-11 | 2000-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-10 | 2004-05-11 | 2004-11-10 | $7700.00 | Window Closed / Lapsed |