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Determining document fitness using illumination

  • US 8,781,176 B2
  • Filed: 10/04/2013
  • Issued: 07/15/2014
  • Est. Priority Date: 11/25/2008
  • Status: Expired due to Fees
First Claim
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1. A method for detecting a document, the method comprising:

  • moving the document in a first direction;

    capturing a first plurality of line scans of at least a portion of the document at a first wavelength of electromagnetic radiation;

    capturing a second plurality of line scans of at least a portion of the document at a second wavelength of electromagnetic radiation;

    assembling the first and second pluralities of line scans to form one or more images of at least portion of the document; and

    wherein at least a portion of the first plurality of line scans are captured substantially perpendicular to the direction of travel of the document.

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