Handwritten symbol recognizer

Details Handwritten symbol recognizer Handwritten symbol recognizer

G - Physics

06

K

G06K 9/00 (2006.01) G06K 9/22 (2006.01) G06K 9/68 (2006.01)

Patent

CA 2125312

HANDWRITTEN SYMBOL RECOGNIZER Abstract of the Disclosure A handwritten symbol recognizer adapted to automatically recognize various handwritten symbols including Kanji character is disclosed. The symbol recognizer includes a data processor coupled to a user interface that receives handwritten input symbols from a user and displays reference symbols determined by the symbol recognizer to correspond to the handwritten symbols. The data processor includes a memory unit which temporarily stores coordinate information representing features of the input symbols as received from the user interface. The data processor includes a symbol analyzer that retrieves the coordinate information from the memory unit and translates the coordinate information for each written feature into a feature code representing one of a predetermined number of feature models stored in the memory. The symbol analyzer also creates a geometric representation of the input symbol for comparison with one or more geometric models stored in the memory unit. The data processor also includes a label comparator adapted to compare the feature codes for the input symbol with feature codes of reference symbols stored in the memory unit and to identify the reference symbol or symbols having feature codes that most closely match the feature codes of the input symbol. The data processor also includes a geometric comparator that compares stored geometric models corresponding to the reference symbols most closely matching the input label with the geometric representation of the input symbol. The geometric comparator uses its comparison to identify the reference symbols whose geometric model or models most closely match the geometric representation of the input symbol. The reference symbol that most closely matches the handwritten input symbol, as determined by the label and geometric comparators, is sent to the user interface which displays the reference symbol to the user.

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