Systems and methods for spectral authentication of a feature of a document

• US 9,053,596 B2
• Filed: 07/31/2012
• Issued: 06/09/2015
• Est. Priority Date: 07/31/2012
• Status: Expired due to Fees

• Current Assignee: Cash Processing Solutions, Inc. (De La Rue PLC)
• Original Assignee: Cash Processing Solutions, Inc. (De La Rue PLC)
• Inventors: Blair, Ronald Bruce
• Primary Examiner(s): Desire, Gregory M
• Application Number:
  US13/563,612
• Publication Number:
  US 20140037196A1
• Time in Patent Office: 1,043 Days
• Field of Search: 382/159, 382/173
• US Class Current: 1/1
• CPC Class Codes: G06F 18/214 Generating training patterns; Bootstrap methods, e.g. bagging or boosting
• CPC Class Codes: G06T 5/40 using histogram techniques
• CPC Class Codes: G07D 7/1205 Testing spectral properties
• CPC Class Codes: G07D 7/205 Matching spectral properties
• CPC Class Codes: G07D 7/206 Matching template patterns

Abstract

Systems and methods for authenticating a document are provided. In one embodiment, a method for authenticating a feature of a document includes capturing a first image of a region of a document while the region is subjected to a first wavelength of electromagnetic radiation. The region includes at least a portion of the document. The method also includes determining a first intensity value associated with the first image of the region, and comparing the first intensity value with a first training intensity value of a region of a training document. The first training intensity value is obtained using the first wavelength of electromagnetic radiation. The method also includes determining whether the document is authentic at least partially based on the comparison between the first intensity value and the first training intensity value.

Claims

1. A system for authenticating a feature of a document, the system comprising:

an electromagnetic radiation emitter for subjecting the document with different first and second wavelengths of electromagnetic radiation;

an image sensor to capture a first image of a region of the document while the region is subjected to the first wavelength of electromagnetic radiation, the image sensor to further capture a second image of the region of the document while the region is subjected to a the second wavelength of electromagnetic radiation, the region comprising at least a portion of the document;

an intensity value determination module, at least partially implemented by a processor, to determine a first intensity value associated with the first image of the region, the intensity value determination module to further determine a second intensity value associated with the second image of the region;

a comparison module, at least partially implemented by the processor, to compare the first intensity value with a first training intensity value of a region of a training document, the first training intensity value obtained using the first wavelength of electromagnetic radiation, the comparison module to further compare the second intensity value with a second training intensity value of the region of the training document, the second training intensity value obtained using the second wavelength of electromagnetic radiation; and

an authentication module to determine whether the document is authentic at least partially based on the comparison between the first intensity value and the first training intensity value and at least partially based on the comparison between the second intensity value and the second training intensity value.