Patent
1992-06-22
1994-07-26
Nguyen, Phu K.
G06F 1516
Patent
active
053332504
ABSTRACT:
Antialiased lines are generated in a computer graphics system by drawing the pixels on one side of the ideal line segment in the minor axis direction on one pass and drawing the pixels lying on the other side of the line segment in the minor axis direction on another pass. A modified Bresenham procedure is used to generate the pixel positions on both passes. On either pass, intensity values are generated from the integral Bresenham determinant directly, rather than from the perpendicular or vertical distance between the pixel and the line.
REFERENCES:
patent: 4586037 (1986-04-01), Rosener et al.
patent: 4796020 (1989-01-01), Budrikis et al.
patent: 4855935 (1989-08-01), Lien et al.
patent: 4873515 (1989-10-01), Dickson et al.
patent: 5136689 (1992-08-01), Waller
patent: 5202960 (1993-04-01), Seiler
patent: 5220650 (1993-06-01), Barkans
Akeley et al., "High-Performance Polygon Rendering", Computer Graphics, vol. 22, No. 4, pp. 239-246, Aug. 1988.
Pitteway et al., "Bresenham's Algorithm with Grey Scale", Communications of the ACM, vol. 23, No. 11, pp. 625-626, Nov. 1980.
Gupta et al., "Filtering Edges for Gray-Scale Displays", Computer Graphics, vol. 15, No. 3, pp. 1-5, Aug. 1981.
Foley et al., Fundamentals of Interactive Computer Graphics, pp. 433-436, 1982.
A Modular Rendering Unit with Antialiasing for High-Speed 3D Image-Generation, P. Gros-G. Fontenier, pp. 163-167, 1988.
Two Algorithms for Drawing Anti-Aliased Lines, Dan Field, Graphics-Interface '82, pp. 87-95, 1982.
A Trip Down the Graphics Pipeline: Subpixelic Particles, J. Blinn,-IEEE Computer Graphics & Applications, pp. 86-90, Sep. 1991.
An Efficient Antialiasing Technique, X. Wu., Computer Graphics, vol. 25, No. 4, Jul. 1991, pp. 143-152.
Lawless William F.
Staley, II Terrance L.
International Business Machines - Corporation
Kinnaman Jr. William A.
Nguyen Phu K.
Walker Mark S.
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