Apparatus and method for detecting and recognizing character lin

Details Apparatus and method for detecting and recognizing character lin Apparatus and method for detecting and recognizing character lin

1997-05-23

2000-03-07

Couso, Jose L.

Image analysis

Pattern recognition

Feature extraction

382174, G06K 948

Patent

active

060350644

ABSTRACT:
A character line recognition apparatus including an image input section for binarizing an inputted document image so as to output a binarized image, an extracting section for obtaining a combining component of a black pixel from the binarized image so as to convert the combining component into circumscribed rectangular data, a calculating section for calculating out simplified projection information based on a prescribed function into which the circumscribed rectangular data, a calculating section for calculating line direction projection information based on the prescribed function as the simplified projection information, and a detecting section for detecting a character line on the document image based on the line direction projection information.

REFERENCES:
patent: 4527283 (1985-07-01), Ito et al.
patent: 5737437 (1998-04-01), Nakao et al.
Nkano et al., "An Algorithm for the Skew Normalization of Document Image", Proceedings of the International Conference on Pattern Recognition, Atlantic City, Jun. 16-21, 1990, vol. 2, No. Conf. 10, Jun. 16, 1990, pp. 8-13.
"Line Segmentetion Method for Document in European Languages", IBM Technical Disclosure Bullentin, vol. 33, No. 1B, Jun. 1990, pp. 207-210.
KIM, "Baseline Drift Correction of Handwritten Text", IBM Technical Disclosure Bulletin, vol. 25, No. 10, Mar. 1983, pp. 5111-5114.

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