Softstroking of edges for computer graphics

Details Softstroking of edges for computer graphics Softstroking of edges for computer graphics

1996-12-11

1999-11-02

Feild, Joseph H

Computer graphics processing and selective visual display system

Computer graphics processing

Three-dimension

345441, G06T 1100

Patent

active

059779810

ABSTRACT:
A method for rendering or compositing image components, where at least one of the image components has an edge. The edge is rendered or composited a plurality of times, the repetitions being performed with different values of the edge thickness (i.e., the thickness of the line) and with different opacities. This makes it possible to create in this way an opacity gradient or the like, so that the edge may be given a softer and less abrupt appearance, if such is desired.

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patent: 5467443 (1995-11-01), Johnson et al.
patent: 5469536 (1995-11-01), Blank
patent: 5611036 (1997-03-01), Berend et al.
"Compositing Digital Images", Thomas Porter and Tom Duff, Computer Graphics, vol. 18, No. 3, Jul. 1984, pp. 253-259.
"Merging and Transformation of Raster Images For Cartoon Animation", Bruce A. Wallace, Computer Graphics, vol. 15, No. 3, Aug. 1981, pp. 253-262.
"Anti-Aliased Line Drawing Using Brush Extrusion", Turner Whitted, Computer Graphics, vol. 17, No. 3, Jul. 1983 at pp. 151-156.

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