Apparatus and method for identification of individuals by near-infrared spectrum
First Claim
1. A method for verifying the purported identity of a target individual utilizing a number of authorization tissue spectral data from verified individuals having known identities, said spectral data having a plurality of measurement wavelengths, comprising the steps of:
- obtaining target tissue spectral data from said target individual, said target tissue spectral data having a number of measurement wavelengths; and
positively verifying said target individual purported identity by comparison of authorization tissue spectral data and target tissue spectral data relative to a preselected threshold.
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Accused Products
Abstract
Methods and apparatus for non-invasively verifying human identities using near-infrared spectroscopy. Near-infrared tissue spectra can be obtained by projecting near-infrared radiation into skin on the underside of human forearms and capturing the light reflected back and out through the tissue. The tissue spectrum collected preferably includes primarily diffuse reflected light reflected from the inner dermis. Multiple tissue spectra and identities can be collected from individuals for whom identity verification may later be desired. The tissue spectra for each individual can be analyzed on a computer, and the spectra for each individual clustered or classified together using tools such as linear discriminant analysis. A target individual seeking identity verification can submit both a purported identity and a near-infrared tissue spectrum for analysis through near-infrared spectroscopy of the forearm. Similarity between the target spectrum and the multiple spectra for the purported identity in the spectral database is determined and identify verified or not verified based on the degree of similarity.
94 Citations
23 Claims
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1. A method for verifying the purported identity of a target individual utilizing a number of authorization tissue spectral data from verified individuals having known identities, said spectral data having a plurality of measurement wavelengths, comprising the steps of:
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obtaining target tissue spectral data from said target individual, said target tissue spectral data having a number of measurement wavelengths; and
positively verifying said target individual purported identity by comparison of authorization tissue spectral data and target tissue spectral data relative to a preselected threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for verifying the purported identity of a target individual comprising the steps of:
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obtaining a number of authorization tissue spectra from a number of verified individuals, said authorization tissue spectra having a plurality of measurement wavelengths, said verified individuals having identities;
obtaining a target tissue spectrum from said target individual, said target tissue spectrum having a number of measurement wavelengths;
performing discriminant analysis on said target tissue spectrum and said authorization tissue spectra for said purported identity; and
positively verifying said target purported identity if, and only if, said discriminant analysis is satisfied.
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15. A system for verifying the purported identity of a target individual comprising:
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an authorized database including near-infrared tissue spectra for a plurality of authorized persons;
means for obtaining a near-infrared tissue spectrum and purported identity from said target individual;
means for discriminating between said target individual near-infrared spectrum and said authorized persons near-infrared spectra, utilizing said authorized person database and said target spectrum; and
means for indicating if said target individual purported identity is correct. - View Dependent Claims (16, 17, 18)
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19. A system for verifying the purported identity of a target individual comprising:
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a computer including an input device and an output device;
a database including near-infrared tissue spectra for a plurality of authorized persons;
means for obtaining a near-infrared tissue spectra from said target individual, including a near-infrared radiation source for projecting near-infrared radiation subcutaneously and a near-infrared spectrometer for measuring subcutaneous near-infrared intensity over a plurality of wavelengths; and
a program running in said computer for discriminating between said target individual near-infrared spectrum and said authorized persons near-infrared spectra utilizing said authorized person database and said target spectrum. - View Dependent Claims (20, 21, 22, 23)
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Specification