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Bar code location and recognition processing system

  • US 5,073,954 A
  • Filed: 02/28/1989
  • Issued: 12/17/1991
  • Est. Priority Date: 02/28/1989
  • Status: Expired due to Term
First Claim
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1. A bar code location and recognition system for locating a digitized image of a bar code, comprising:

  • means for converting an image of the surface of an object imprinted with a bar code pattern having at least two bars of different pitch to a digital image having an array of black and white pixels in rows and columns;

    means for generating an L-shaped pattern characteristic of a digitized image of the bar code pattern when black pixels are summed along segments of each row containing a portion of the digital image of the bar code pattern; and

    means for locating the coordinates of the L-shaped pattern in a region within the array of pixels containing the digitized image of the bar code pattern.

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