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On-line handwriting recognizer

  • US 20040165777A1
  • Filed: 02/25/2003
  • Published: 08/26/2004
  • Est. Priority Date: 02/25/2003
  • Status: Active Grant
First Claim
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1. A method for recognizing an input handwritten character digitized as a sequence of coordinate points in two dimensional space representative of a trajectory making up the input character, the method comprising the acts of:

  • gathering the sequence of points for the input character;

    building an input graph with nodes representative of significant points along the trajectory of the input character and with edges between nodes representative of the trajectory formed by the sequence of points of the input character between the significant points;

    describing each edge in the input graph based on the shape and orientation of the trajectory that the edge represents;

    evaluating the input graph against model graphs for all possible characters to find a model graph having the most similar path to a path of the input graph and identifying the input character as an answer character represented by the model graph with the most similar path.

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