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Method for generating vector data for a hand-drawn curve

  • US 7,116,844 B2
  • Filed: 08/09/2002
  • Issued: 10/03/2006
  • Est. Priority Date: 08/09/2002
  • Status: Active Grant
First Claim
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1. A method for obtaining vector data for a hand-drawn curve, comprising:

  • a step of receiving and storing in a temporary memory coordinate data and pen pressure data representing points of a hand-drawn path obtained from a pointing device;

    a first extraction step of extracting from the coordinate data stored in the temporary memory coordinate characteristic points indicating characteristics of the path;

    a coordinate data storage step of storing the coordinate characteristic points into a first storage means;

    a second extraction step of extracting pen pressure characteristic points characterizing changes in pen pressure from the pen pressure data stored in the temporary memory;

    a pen pressure data storage step of storing the pen pressure characteristic points into a second storage means; and

    a plotting processing step of using the coordinate characteristic points stored in the first storage means and the pen pressure characteristic points stored in the second storage means to calculate a curve along which the thickness or density thereof changes in response to the pen pressure,wherein the first and second extraction steps are carried out independently of each other.

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