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Character recognition method and apparatus

  • US 5,734,750 A
  • Filed: 02/15/1995
  • Issued: 03/31/1998
  • Est. Priority Date: 10/16/1991
  • Status: Expired due to Term
First Claim
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1. A character recognition apparatus comprising:

  • input means for inputting a plurality of strokes which collectively form a character;

    input-stroke classification means for classifying each stroke of the input strokes, which are constituent strokes forming the input character, into one of a plurality of different types;

    extraction means for extracting input strokes which are classified into one type;

    calculating means for calculating a value of analogy between input strokes which are classified as a particular type and stroke information of the particular type for a character stored in a dictionary, for forming an analogy matrix comprising calculated values of analogy as elements thereof, for detecting a maximum matrix element in each of a plurality of columns or in each of a plurality of rows of the analogy matrix, and for designating the detected maximum matrix elements as maximum analogous elements;

    determining means for determining whether or not there is one maximum matrix element in each row or each column of the analogy matrix, and in a case that there is more than one maximum matrix element in a row or a column, for selecting a maximum matrix element so that only one maximum matrix element is present in each row or each column;

    detection means for detecting a maximum analogous character from a plurality of characters stored in the dictionary according to calculated values of analogy between input strokes classified as a particular type and stroke information of the particular type for each of the plurality of characters stored in the dictionary; and

    output means for outputting said maximum analogous character.

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