Character recognition method

Image analysis – Histogram processing – For setting a threshold

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382 34, 382 37, 382 40, G06K 946

Patent

active

050671650

ABSTRACT:
A method for recognizing a character string made of alphanumeric characters comprises processes of providing a dictionary storing each alphanumeric character in a form of a graph including nodes and links, each of the nodes corresponding to the structural elements of the character and carrying an attribute representing thereof, each of the links representing the geometrical relationship which exists between the nodes connected by the link, extracting the structural elements together with the geometrical relationship existing therebetween from the character string read from the document starting from a starting location at one end of the character string, verifying that a corresponding structural element and geometrical relationship exist in the dictionary, predicting the structural elements and the geometrical relationship existing in the character string at a location immediately adjacent to the former location in the character string, based on the result of verification, and recognizing the character string by moving the location step by step consecutively along the character string towards the second end.

REFERENCES:
patent: 4754489 (1988-06-01), Bokser
Young et al. "Handbook of Pattern Recognition and Image Processing", Academic Press, 1986, pp. 85-117.

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