Polygon-filling apparatus used in a scanning display unit and me

Details Polygon-filling apparatus used in a scanning display unit and me Polygon-filling apparatus used in a scanning display unit and me

1986-09-25

1988-12-13

Harkcom, Gary V.

Boots, shoes, and leggings

364521, 364518, 340729, 340744, 340747, G06F 1572

Patent

active

047915820

ABSTRACT:
A polygon-filling apparatus discriminates whether the polygon marks off ony one continuous lot of each scanning line according to a number of maximal values and a number of minimal values in a direction perpendicular to a scanning line and which transforms polygons discriminated as marking off two or more continuous lots on each scanning line to obtain only polygons marking off one continuous lot of each scanning line. The apparatus detects other apexes from any apex of the obtained polygon corresponding to maximum and minimum coordinate values in a direction perpendicular to the scanning line and paints a predetermined region according to ridge data on the left and right sides of each scanning line. The ridge data are obtained by interpolation between data indicative of neighoring apexes chained from apexes having maximum and minimum values.

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patent: 4481594 (1984-11-01), Staggs et al.
patent: 4590465 (1986-05-01), Fuchs
patent: 4626838 (1986-12-01), Tsujioka et al.
patent: 4646076 (1987-02-01), Wiedenman et al.
patent: 4646078 (1987-02-01), Knierim et al.
patent: 4646134 (1987-02-01), Komatsu et al.
patent: 4648045 (1987-03-01), Demetrescu
patent: 4667306 (1987-05-01), Smith
patent: 4677576 (1987-06-01), Berlin, Jr. et al.
patent: 4710876 (1987-12-01), Cline et al.
patent: 4758965 (1988-07-01), Liang et al.

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