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Scribble matching

  • US 6,018,591 A
  • Filed: 11/19/1997
  • Issued: 01/25/2000
  • Est. Priority Date: 07/04/1994
  • Status: Expired due to Term
First Claim
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1. A method of matching samples of electronically stored freehand input with other stored samples of freehand input, the method comprising:

  • locating velocity minima in each said freehand input sample;

    coding each said freehand input sample by a sequence of symbols each representing a feature of the freehand input sample at a velocity minimum which is one of said velocity minimum; and

    matching each said sequence of symbols against codes of said other stored samples of freehand input using a string edit distance metric;

    wherein at least one of said freehand input samples is a figure exceeding a single text character, and said matching is completed for each said freehand input sample without identification of said freehand input sample as a sequence of individual text characters.

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