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Interactive drawing recognition processing method and apparatus thereof

  • US 5,987,173 A
  • Filed: 03/26/1996
  • Issued: 11/16/1999
  • Est. Priority Date: 03/27/1995
  • Status: Expired due to Fees
First Claim
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1. An interactive drawing recognition processing method, comprising the steps of:

  • obtaining an image data by reading a drawing to be processed;

    obtaining pattern elements which are labeled by performing a labeling process for the image data;

    generating a contour line data by obtaining an edge for each pattern element, the contour line being constituted of a plurality of line segments;

    generating a plurality of region data, corresponding to the line segments of the contour line, for managing a regional information in a tree structure, each of the plurality of region data indicating at which region each of the line segments is contained in the drawing;

    retrieving, when a region containing a pair of line segments constituting the contour line is specified, the region data associated with the specified region; and

    extracting the contour line data corresponding to the region data which is obtained by the retrieving, and then generating a central line of the specified pair of line segments according to the extracted contour line data.

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