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Image processing apparatus and image processing method

  • US 8,326,085 B2
  • Filed: 06/08/2009
  • Issued: 12/04/2012
  • Est. Priority Date: 06/19/2008
  • Status: Expired due to Fees
First Claim
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1. An image processing apparatus, comprising:

  • an image input unit configured to input a document image;

    a reducing unit configured to generate a reduced document image by reducing the document image;

    an edge image generating unit configured to generate an edge image by extracting at least one edge of the reduced document image; and

    an inclination detecting unit configured to detect an inclination of the document image based on an inclination of a straight line representing an edge of the edge image, wherein said inclination detecting unit detects the straight line representing the edge of the edge image by performing a Hough transformation, and detects the inclination of the document image based on an inclination of the straight line, andwherein said inclination detecting unit is operable, if a plurality of straight lines that have different inclinations are detected, to determine a smallest inclination among the inclinations of the plurality of straight lines to be the inclination of the document image.

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