| 摘要 |
PURPOSE:To efficiently perform the document processing by severely collating one-page components of input characters at every font and defining the font of the character, which has the lowest reject (unreadable) rate, as the font of this page and collating one-page components of input characters with a relaxed reference with respect to only this font to output answers. CONSTITUTION:A collating means 2 calculates the degree of noncoincidence between feature data of feature data of an inputted character and that of contents of a dictionary, and an answer is outputted when the degree of noncoincidence is lower than a prescribed threshold and the difference between first and second candidates is larger than a prescribed threshold, but reject is outputted otherwise. A font determining means 3 counts the number of unreadable characters at every page of an input document with respect to each font of dictionaries 11, 12... and determines the font, where the number of unreadable characters is minimum, as the font of this page. A font selecting means 4 selects respective fonts at every page of the input document in the first stage and selects the font, which is determined by the font determining means 3, in the second stage. A threshold selecting means 5 selects a decision threshold level different between the first stage and the second stage. Thus, characters are efficiently read with high precision.
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