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Visual code system for camera-equipped mobile devices and applications thereof

  • US 20050242189A1
  • Filed: 04/13/2005
  • Published: 11/03/2005
  • Est. Priority Date: 04/20/2004
  • Status: Active Grant
First Claim
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1. A method for decoding a visual code comprising the steps of:

  • capturing an image of a visual code utilizing a mobile device equipped with a digital camera;

    grayscaling said visual code image;

    thresholding said visual code image;

    identifying regions of interest in said visual code image;

    calculating the orientation and shapes of different regions within said visual code;

    locating said visual codes within said visual code image; and

    evaluating said visual codes located within said visual code image.

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