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SYMBOL GRAPH GENERATION IN HANDWRITTEN MATHEMATICAL EXPRESSION RECOGNITION

  • US 20080240570A1
  • Filed: 03/29/2007
  • Published: 10/02/2008
  • Est. Priority Date: 03/29/2007
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving strokes representing a handwritten equation;

    for each stroke, forming path scores for a combination of a symbol-relation pair that represents a symbol in a particular relation to a predecessor symbol and a predecessor symbol-relation pair that represents the predecessor symbol in a particular relation to a further predecessor symbol;

    using the path scores to construct a symbol graph comprising nodes connected by path segments, each path segment having a path segment score that is based in part on a path score and representing at least a symbol-relation pair;

    using the symbol graph to identify a recognized mathematical expression that represent the handwritten equation; and

    storing the recognized mathematical expression.

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