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Image extracting apparatus, image extracting method and computer readable medium

  • US 8,155,443 B2
  • Filed: 11/05/2008
  • Issued: 04/10/2012
  • Est. Priority Date: 04/09/2008
  • Status: Expired due to Fees
First Claim
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1. An image extracting apparatus comprising:

  • an image acquiring section that acquires a scan image obtained by scanning an object;

    a detecting section that generates a binary image of the acquired scan image and detects connected pixels in the generated binary image;

    a circumscribed rectangle setting section that sets up a circumscribed rectangle for the connected pixels detected by the detecting section;

    an edge pixel detecting section that, in each side of the circumscribed rectangle, performs a scan in a direction perpendicular to a side of the circumscribed rectangle so as to detect edge pixels, wherein the scan starts at a plurality of points on a line, and the line extends to one vertex of the circumscribed rectangle from a contacting point at which the connected pixels and the side of the circumscribed rectangle contact;

    a determining section that determines whether the edge pixels detected by the edge pixel detecting section are located in a contour part of the object reproduced in the scan image;

    a rectangular region setting section that sets up a rectangular region based on the edge pixels determined as being located in the contour part of the object; and

    an image extracting section that extracts an image from the rectangular region set up by the rectangular region setting section.

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