×

Method and apparatus for symbol recognition using multidimensional preprocessing at multiple resolutions

  • US 5,337,372 A
  • Filed: 10/13/1992
  • Issued: 08/09/1994
  • Est. Priority Date: 10/13/1992
  • Status: Expired due to Fees
First Claim
Patent Images

1. An apparatus for recognizing symbols, comprising:

  • first preprocessor means responsive to an applied plurality of micro-segments which describes a symbol, for associating a micro-segment with a first plurality of cells of a first feature cellular array, where each of said cells has a first associated feature label, andfor assigning a cell value to a cell, using a micro-segment value that is related to how well a feature of said micro-segment associated with said cell corresponds to said cell'"'"'s feature label;

    means for selecting a subset of reference cellular arrays from a first plurality of reference cellular arrays based on a similarity between each of the subset reference cellular arrays and said first plurality of cells;

    second preprocessor means for associating said micro-segment with a second plurality of cells of a second feature cellular array where each of said cells has a second associated feature label; and

    comparator means for recognizing said symbol based on a similarity between said second plurality of cells and a reference cellular array in a second plurality of reference cellular arrays identified by said subset of reference cellular arrays.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×