Patent
1988-09-26
1991-11-12
Herndon, Heather R.
G06F 1562
Patent
active
050653440
ABSTRACT:
Segment data expressing segments which form the contour of a graphic figure are provided. Connection mode data expressing the connection modes between the segments are generated. The loops included in the graphic figure are detected on the basis of the segment data and the connection mode data. Even if the segments imperfectly define the contour, the loops can be detected through the step of correcting the segment data and the connection mode data.
REFERENCES:
patent: 4528642 (1985-07-01), Waller
patent: 4646076 (1987-02-01), Wiedenman et al.
patent: 4745575 (1988-05-01), Hawes
patent: 4763119 (1988-08-01), Matsubara et al.
patent: 4808988 (1989-02-01), Burke et al.
Kishimoto Katsumi
Shimazu Shigeaki
Dainippon Screen Mfg. Co,. Ltd.
Herndon Heather R.
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