Patent ID: 8786839
Filing Date: 2014-07-22
Classification: A61B,G06K,G07D,H01L

Abstract:
1. A method for authenticating an object, comprising: illuminating the object with a plurality of wavelengths of light from a plurality of light-emitting sources; detecting light scattered from the illuminated object with a plurality of photodiodes to create a multi-spectral image of at least a specified portion of the illuminated object, wherein the plurality of light-emitting sources and the plurality of photodiodes are optically coupled such that the plurality of wavelengths of light are simultaneously directed to the plurality of photodiodes; producing a reflectance spectrum from the multi-spectral image, wherein the producing the reflectance spectrum from the multi-spectral image further comprises finding pixels of a specified feature on the object and averaging their intensity values; comparing the reflectance spectrum to a template reflectance spectrum of an authentic object; and determining if the illuminated object is authentic as a function of the comparison.