Image analysis – Histogram processing – For setting a threshold
Patent
1983-01-19
1985-12-24
Boudreau, Leo H.
Image analysis
Histogram processing
For setting a threshold
382 30, G06K 978
Patent
active
045611050
ABSTRACT:
A method and system for recognizing complex patterns, such as Chinese characters (or Kanji), identifies patterns by stroke recognition using detailed information about stroke shape and specifically curvature characteristics. Written strokes are categorized into different specific stroke types and are assigned stroke identity labels by comparison of distance metrics generated with reference to stroke templates, each template comprising information specifying position of a point and permissible deviation for each such point along a stroke. Deviation values may differ from point to point and from stroke type to stroke type. The data on the written stroke may be rotated or displaced relative to each stroke template to enhance the likelihood of stroke recognition. Limited information about stroke position relative to other strokes may be preserved and employed to resolve ambiguities among accumulations of stroke identity labels found to ambiguously indicate more than one pattern or character.
REFERENCES:
patent: 3165718 (1965-01-01), Fleisher
patent: 3611290 (1971-10-01), Luisi et al.
patent: 3618016 (1971-11-01), Van Steenis
patent: 3700815 (1972-10-01), Doddington et al.
patent: 4015239 (1977-03-01), Fujimoto et al.
patent: 4027284 (1977-05-01), Hoshino et al.
patent: 4035768 (1977-07-01), Boldridge, Jr. et al.
patent: 4037198 (1977-07-01), Essenmacher et al.
patent: 4040009 (1977-08-01), Kadota et al.
patent: 4040010 (1977-08-01), Crane et al.
patent: 4173753 (1979-11-01), Chou
patent: 4179685 (1979-12-01), O'Maley
patent: 4190820 (1980-02-01), Crane et al.
patent: 4284975 (1981-08-01), Odaka
patent: 4365235 (1982-12-01), Greanias et al.
K. Ikeda et al., "On-Line Recognition of Hand-Written Characters Utilizing Positional and Stroke Vector Sequences", 1981, Pattern Recognition, vol. 13, No. 3, pp. 191-206.
E. F. Yhap et al., "An On Line Chinese Character Recognition System", May 1981, IBM J. Res. Develop., vol. 25, No. 3, p. 187.
Crane et al., "A Technique for the Input of Handprinted Chinese Characters Based on Sequential Stroke Recognition", Dec. 27-29, 1977, Proceedings of International Computer Symposium 1977, vol. One, pp. 246-261.
Ching Y. Suen et al., "Automatic Recognition of Handprinted Characters--The State of the Art", Apr. 1980, Proceedings of the IEEE, vol. 68, No. 4, pp. 469-487.
Crane Hewitt D.
Ostrem John S.
Boudreau Leo H.
Communication Intelligence Corporation
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