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Graphic recognition device, graphic recognition method, and graphic recognition program

  • US 8,229,162 B2
  • Filed: 12/26/2006
  • Issued: 07/24/2012
  • Est. Priority Date: 01/17/2006
  • Status: Expired due to Fees
First Claim
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1. A graphic recognition device for recognizing a graphic in an image photographed by a photographic device, the graphic recognition device comprising:

  • a shadow area calculating unit for calculating an area of a shadow of an object in the image;

    an area graphic recognizing unit for determining whether or not a predefined specific graphic exists in the image individually for an inside and an outside of the area of the shadow calculated by the shadow area calculating unit; and

    a graphic recognizing unit for determining whether or not the specific graphic exists in the image based on a result determined by the area graphic recognizing unit,wherein the shadow area calculating unit calculates the area of the shadow based on light source location information indicating a location of a light source, and object location information indicating an actual location of a plurality of points forming a contour of an object forming the shadow.

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