| US 7,489,819 B2 | ||
| Systems and methods for handwritten digital pen lexical inference | ||
| Rodney L. Sheets, Salt Lake City, Utah (US) | ||
| Assigned to Velosum, Inc., Sandy, Utah (US) | ||
| Filed on May 11, 2007, as Appl. No. 11/747,418. | ||
| Claims priority of provisional application 60/799671, filed on May 12, 2006. | ||
| Prior Publication US 2007/0263931 A1, Nov. 15, 2007 | ||
| Int. Cl. G06K 9/00 (2006.01) | ||
| U.S. Cl. 382—186 | 20 Claims |
| 1. A method for recognizing handwriting on a paper form using a digital pen, the method comprising:
accessing a stroke collection file comprising data corresponding to a set of pen strokes marked by a user on the paper form
using the digital pen;
associating a field on the paper form with a predetermined lexical inference type;
determining a subset of pen strokes in the stroke collection file corresponding to the field, wherein determining comprises:
associating the field with an area on the paper form corresponding to a first set of coordinates;
accessing a second set of coordinates corresponding to a particular stroke from the stroke collection file; and
comparing the second set of coordinates to the first set of coordinates to determine whether the particular stroke was written
within the area associated with the field;
based on the lexical inference type, dynamically updating an inference lexicon associated with the field; and
performing handwriting recognition on the subset of pen strokes based on the dynamically updated inference lexicon.
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