Patent ID: 6175651
Filing Date: 2001-01-16
Classification: G06K

Abstract:
An on-line character recognition method comprising the steps of:inputting a character, said character having one or more stroke patterns;for each stroke of said one or more stroke patterns:detecting a respective stroke shape pattern for said stroke pattern,detecting a respective stroke position pattern for said stroke pattern,calculating a plurality of inter-stroke shape distances, said inter-stroke shape distances being the distances between said stroke shape pattern and a plurality of target character stroke shape patterns stored by a plurality of stroke shape code numbers in a stroke shape code book,storing said inter-stroke shape distances in a shape distance table, said shape distance table including a stroke number and a stroke shape code number for each target character stroke shape pattern,calculating a plurality of inter-stroke position distances, said inter-stroke position distances being the distances between said stroke position pattern and a plurality of target character stroke position patterns stored by a plurality of stroke position code numbers in a stroke position code book,storing said inter-stroke position distances in a position distance table, said position distance table including a stroke number and a stroke position code number for each target character stroke position pattern;providing a character dictionary comprising a plurality of target characters and associated character code identifiers, said character code identifiers corresponding to the stroke shape code numbers and stroke position code numbers for referencing said stroke shape patterns of target characters and said stroke position patterns of target characters respectively, each of said target characters having one or more strokes, each said stroke consisting of one said stroke shape pattern and one said stroke position pattern;calculating a plurality of inter-character distances by using said inter-stroke shape distances stored in said shape distance table and said inter-stroke position distances stored in said position distance table, said inter-character distances being the distances between said inputted character and said plurality of target characters stored in said character dictionary; andselecting the one of said plurality of target characters, from the character dictionary, which corresponds to the smallest inter-character distance of said plurality of inter-character distances.