Method and apparatus for reducing distortion in a graphic patter

Details Method and apparatus for reducing distortion in a graphic patter Method and apparatus for reducing distortion in a graphic patter

1993-08-04

1994-12-20

Jankus, Almis

Image analysis

Histogram processing

For setting a threshold

395136, 395143, 382 16, 382 18, 382 54, 382 55, G06F 1562

Patent

active

053751949

ABSTRACT:
A method of beautificating a graphic pattern approximated by line segments divided by knots, includes the step (H) of moving each knot under a predetermined limited condition, the step (G) of obtaining a quality evaluation value for the graphic pattern corresponding to the moved knot, and the step (I) of obtaining a graphic pattern which corresponds to the moved knot and has a largest quality evaluation value as a beautificated graphic pattern. For all combinations of movable knots, quality evaluation values of graphic patterns corresponding to the moved knots are obtained and are compared with each other to obtain a graphic pattern having the largest quality evaluation value. Alternatively, quality evaluation values of graphic patterns are obtained upon sequential movement of the knots, and a graphic pattern having the largest quality evaluation value is obtained while sequentially selecting the moved knots corresponding to higher quality evaluation values. This invention provides a method and apparatus for beautificating line drawings.

REFERENCES:
patent: 4566124 (1986-01-01), Yamamoto et al.
patent: 4885702 (1989-12-01), Ohba
patent: 5131053 (1992-07-01), Bernzott et al.
patent: 5208869 (1993-05-01), Holt
An Automatic Beautifier For Drawings And Illusrtrations Proc. ACM Siggraph '85, pp. 225-234, 1985, vol. 19, No. 3.
IBM Technical Disclosure Bulletin, vol. 18, No. 7, Dec. 1975, pp. 2339-2342, W. J. Fitzgerald, et al., "Procedure For Rectifying A Roughly Sketched Drawing".

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