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Photographic document imaging system

  • US 7,835,589 B2
  • Filed: 06/05/2009
  • Issued: 11/16/2010
  • Est. Priority Date: 08/26/2004
  • Status: Active Grant
First Claim
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1. A method for processing a captured image that comprises an imaged document with perspective distortion;

  • said method comprising;

    detecting graphical information in the captured image relating to the transition between said imaged document and the remainder of said captured image;

    selecting one or more lines from said graphical information corresponding to edges of said imaged document;

    calculating corners of said imaged document based on intersections of said one or more lines corresponding to edges of said imaged document;

    isolating said imaged document from background of said captured image based on said one or more lines corresponding to edges of said imaged document;

    computing deviations of said imaged document from a non-distorted perspective of said imaged document; and

    generating a new image of said imaged document with reduced perspective distortion based on said computed deviations.

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