Image analysis – Histogram processing – For setting a threshold
Patent
1991-11-26
1994-05-31
Couso, Jose L.
Image analysis
Histogram processing
For setting a threshold
382 22, 382 24, G06K 946, G06K 948
Patent
active
053176499
ABSTRACT:
A method for classifying character line patterns in a dictionary, includes the steps of: (a) obtaining a first class to which one or a plurality of first line patterns belong; (b) obtaining a second class to which one or a plurality of second line patterns belong, each of the first and second line patterns being characterized by structural information, (c) determining whether or not the structural information of the first line pattern and the structural information of the second line pattern are similar to each other in accordance with a predetermined rule; and (d) combining the first and second classes with each other when the step (c) determines that the structural information of the first line pattern and the structural information of the second line pattern are similar to each other, so that a new class is obtained, to which the first and second line patterns belong.
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patent: 4773098 (1988-09-01), Scott
Yuzo Kato et al., "Automatic Production Method of a Dictionary for the Pattern Recognition", The Institute of Electronics and Communication Engineers of Japan, pp. 1-12.
Kazuhiko Yamamoto et al., "Recognition of Handprinted Characters by an Outermost Point Method", Pattern Recognition, vol. 12, 1980, pp. 229-236.
Henry S. Baird, "Feature Identification for Hybrid Structural/Statistical Pattern Classification", Computer Vision, Graphics, and Image Processing, 42, 1988, pp. 318-333.
Hirobumi Nishida et al., "A Structural Description of Curves by Quasi-Topological Features and Singular Points", IAPR Workshop on Syntactic & Structural Pattern Recognition, Jun. 1990, pp. 310-334.
Couso Jose L.
Ricoh & Company, Ltd.
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