Character recognition method using correlation search

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United States of America Patent

PATENT NO 5150425
SERIAL NO

07752801

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Abstract

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A character recognition method comprising the following steps: (1) acquiring a two dimensional array of pixels, (2) locating an unknown character in the two dimensional array, (3) computing correlation coefficients between an unknown character and a trained set of characters (i.e., a font), (4) recognizing the unknown character as the trained character with the highest correlation coefficient above a threshold. The manner in which trained characters are chosen is described herein as a correlation search. Correlation search results in a fast means of correctly classifying an unknown character from a large training set, often on the second or third try, depending on the inner-correlations of the trained characters.

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Patent OwnerAddress
VIDEK INCTOWNLINE ROAD 2200 BIRGHTON-HENRIETTA ROCHESTER NY 14623

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Robert Y Seattle, WA 4 129
Cook, John F Rochester, NY 9 118
Martin, Gregory J Canandaigua, NY 15 189
Mason, James A Rochester, NY 15 513

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