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System for recognizing handwritten character strings containing overlapping and/or broken characters

  • US 5,321,768 A
  • Filed: 09/25/1992
  • Issued: 06/14/1994
  • Est. Priority Date: 09/22/1992
  • Status: Expired due to Fees
First Claim
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1. A method of recognizing characters in a string of handwritten text, comprising the steps of:

  • (a) providing an array of pixels corresponding to said string;

    (b) estimating the number of characters contained in said string;

    (c) partitioning said array into a plurality of groups of rows of said pixels;

    (d) vertically partitioning each of said groups of rows in order to separate occupied columns within each of said groups of rows from unoccupied columns, said columns being occupied if they contain a foreground pixel and being unoccupied if they contain no foreground pixel;

    (e) designating as a component a plurality of said columns having a foreground pixel if said plurality is contiguous, said component thereby forming a discrete pattern;

    (f) removing non-character components from each of said groups of rows;

    (g) recognizing said discrete patterns as characters;

    (h) removing from said array said recognized discrete patterns having a predetermined confidence level of corresponding to one of said characters; and

    (i) reestimating said number of characters contained in said string to obtain a reestimated number of characters.

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