The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 26, 2008
Filed:
Dec. 07, 2005
Leonid Polonskiy, St. Louis, MO (US);
Jeffry Golden, Creve Coeur, MO (US);
Clinton Boyd, St. Peters, MO (US);
Arie Kaplan, University City, MO (US);
Lawrence Hanebrink, Chesterfield, MO (US);
Qingzhong (James) Cai, Plano, TX (US);
Andrew Cilia, McKinney, TX (US);
Leonid Polonskiy, St. Louis, MO (US);
Jeffry Golden, Creve Coeur, MO (US);
Clinton Boyd, St. Peters, MO (US);
Arie Kaplan, University City, MO (US);
Lawrence Hanebrink, Chesterfield, MO (US);
Qingzhong (James) Cai, Plano, TX (US);
Andrew Cilia, McKinney, TX (US);
Abstract
A method for remotely detecting whether a subject is alive, comprising the steps of determining a calibration spectral signature for light reflectance from living skin, normalizing the calibration spectral signature values to the calibration reflectance value at a reference wavelength, storing the normalized calibration spectral signature, determining a subject spectral signature of the light reflectance of a region of skin of the subject whose liveness is to be determined, normalizing the subject spectral signature values to the subject reflectance value at the reference wavelength, comparing the normalized subject spectral signature with the normalized calibration spectral signature for at least one wavelength, generating a subject liveness signal based on the comparison of the normalized subject spectral signature with the normalized calibration spectral signature, and emitting the subject liveness signal.