Image analysis – Editing – error checking – or correction
Patent
1997-06-02
1998-06-16
Johns, Andrew W.
Image analysis
Editing, error checking, or correction
3644191, 36441908, G06K 903, G06F 1720, G06F 1727
Patent
active
057684510
ABSTRACT:
A character recognition method is arranged to supplement an erroneously recognized character with a linguistic knowledge. In this method, the extraction of a candidate based on the search of a word dictionary occupies a large part of the operation. To speed up the extraction of a candidate word, therefore, the method is provided to search the dictionary by using a group of candidate characters or a dictionary header for processing an inflected form of a verb. Further, the present method is provided for calculating a word matching cost for improving an efficiency of modifying an erroneous recognition. The word search is done by using a "hybrid method" arranged of "candidate-character-driven word extraction" and "dictionary-driven word extraction". Moreover, the word-dictionary is arranged to have a header word composed of an inflectional ending of a verb and an auxiliary verb or a particle added to the tail of the inflectional ending. The present method attaches much importance to the difference of the matching cost about a character with a totally high confidence ratio than the difference of the matching cost about a character with a totally low confidence ratio.
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Hisamitsu Toru
Marukawa Katsumi
Nitta Yoshihiko
Shima Yoshihiro
Shimokawabe Hiroaki
Davis Monica S.
Hitachi Ltd
Johns Andrew W.
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