Patent ID: 6041141
Filing Date: 2000-03-21
Classification: G06K

Abstract:
A character recognition machine having a language processing portion capable of processing language, said language processing portion comprising:a character string image storage portion for storing an image input;a word search portion for receiving a set of candidate characters and determining a set of candidate words, using a word dictionary, based on a degree of similarity between the candidate characters and the characters in various character positions in the character string image;a phrase search portion for finding candidate phrases from the set of candidate words, using a grammatical dictionary;a phrase evaluating value-calculating portion for calculating correctness of each phrase in terms of vocabulary and grammar;a phrase-selecting portion for selecting one phrase, based on evaluating values of phrases, and producing a modified character string;a character recognition portion for recognizing a portion of a character image corresponding to one character and producing a set of character categories and their degrees of similarity; anda candidate character comparator portion which compares a character category having a maximum degree of similarity and applied from said character recognition portion with said corresponding modified character string and, when said character category differs from said modified character string, produces both a modified character category and a character position corresponding to the modified character category as additional learning characters to said character recognition portion.