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Method and system for creating and using barcodes

  • US 8,215,564 B2
  • Filed: 08/11/2009
  • Issued: 07/10/2012
  • Est. Priority Date: 12/16/2005
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • detecting at least one any-point-detection shape in an image of a symbol using a probabilistic detection, the symbol having a plurality of modules collectively encoding information and a finder pattern centered at a reference point in the symbol, wherein the at least one any-point-detection shape is distinguishable by shape from the plurality of modules and arranged into an alignment pattern having a geometric relationship with the finder pattern and a subset of the plurality of modules, the detecting including;

    detecting boundary points of the alignment pattern on a set of angularly displaced scan lines that intersect at a starting point within the image; and

    identifying the alignment pattern by correlating the boundary points with a selected geometrical shape of the at least one any-point-detection shape.

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