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Method and apparatus for identifying the rotation angle and bounding rectangle of a digitized form

  • US 7,817,854 B2
  • Filed: 07/11/2006
  • Issued: 10/19/2010
  • Est. Priority Date: 07/11/2006
  • Status: Active Grant
First Claim
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1. A method of processing an image represented by a plurality of pixel values, each pixel value corresponding to a pixel element, the method comprising:

  • operating a processor in a computer system to generate for each of a plurality of first bands of pixel values in said image, a first set of first histogram values, said first bands extending in a first direction, each first histogram value corresponding to a set of pixel values extending in a second direction perpendicular to said first direction; and

    analyzing at least some of the first set of histogram values to determine for each analyzed first set of histogram values a location of a first image edge and a first confidence value corresponding to the determined first image edge location.

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