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Document recognition method and system

  • US 5,717,794 A
  • Filed: 10/04/1996
  • Issued: 02/10/1998
  • Est. Priority Date: 03/17/1993
  • Status: Expired due to Fees
First Claim
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1. A document recognition system wherein characters on a document are recognized from an image of the document, and at least the recognized characters are displayed on a display unit, comprising:

  • input means for entering the document image which is an object to be recognized;

    character line extraction means for obtaining character line data which indicate limits of a character line formed of a character string, including either of a frame and a block surrounding said character string, on said document image entered by said input means, wherein said frame and said block indicate a set character line displayed as a polygon in superposition of the document image by utilizing graphics;

    character line correction means for presenting the limits of the character line obtained by said character line extraction means to a user of said document recognition system, superimposed on said document image on said display unit, and for correcting said limits of said character line in accordance with an instruction given by the user;

    character segmentation means for deriving character patterns of the individual characters contained in said character line, from said document image on the basis of the character line data;

    character recognition means for recognizing the character patterns derived by said character segmentation means, and for converting the recognized character patterns into respectively corresponding character codes; and

    display means for causing said display unit to display the character codes of said characters recognized by said character recognition means.

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