System with approximation mechanism for recognizing graphical el

Details System with approximation mechanism for recognizing graphical el System with approximation mechanism for recognizing graphical el

1992-09-25

1995-11-14

Boudreau, Leo H.

Image analysis

Applications

Reading maps, graphs, drawings, or schematics

382170, 382190, G06K 962

Patent

active

054674115

ABSTRACT:
A drawing recognition system is disclosed which recognizes even a complex low-quality drawing containing overlapping charts, or many blurs or discontinuations with less operations. The system includes both a program for approximating a graphical object to be recognized and a program for approximating positions on the approximated graphical object. The system further includes a means for creating a chart model according to the designation, and a chart recognition means for matching the chart model and the chart to be recognized in the drawing.

REFERENCES:
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patent: 4567610 (1986-01-01), McConnell
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patent: 5068804 (1991-11-01), Watanabe et al.
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patent: 5291561 (1994-03-01), Janaka et al.
Bishop et al., "Character Recognition Approach Involving Histogram Classification," IBM Technical Disclosure Bulletin, vol. 21, No. 9, Feb. 1979, pp. 3461-3467.
Suzuki et al., "Maris: Map Recognition Input System," Pattern Recognition, vol. 23, No. 8, 1990, pp. 919-933.
Nagao et al., "An Automatic Road Vector Extraction Method From Maps," 9th Int. Conf. on Pattern Recognition, 1988, pp. 585-587.
"Interactive Drawing Input System", Nikkei Computer Graphics, pp. 120-130, Apr., 1987.

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