Method and apparatus for anti-aliasing post rendering of an imag

Details Method and apparatus for anti-aliasing post rendering of an imag Method and apparatus for anti-aliasing post rendering of an imag

1998-06-01

2000-08-01

Nguyen, Phu K.

Computer graphics processing and selective visual display system

Computer graphics processing

Shape generating

G06F 1500

Patent

active

060974001

ABSTRACT:
A method and apparatus for anti-aliasing a rendered scene begins processing by rendering a plurality of objects of an image to a buffer to produce a rendered image. For example, the image corresponds to a particular frame of data to be displayed on a computer monitor, television, etc. Each of the objects corresponds to portions of the image and is comprised of object-elements (e.g., triangles). While the plurality of objects is being rendered, edge information of the objects that are in a most foreground position is maintained. The edge information includes a pixel offset value, which indicates the offset of an edge from a pixel center, and gradient information of the object edge. After the image has been rendered and the edge information has been collected for a particular frame of data, the rendered image is filtered based on the edge information. In particular, a two-dimensional spatial filter that derives its filtering parameters from the edge information is applied to the rendered image.

REFERENCES:
patent: 5649080 (1997-07-01), Minakata
patent: 5815162 (1998-09-01), Levine
patent: 5977979 (1999-11-01), Clough et al.
patent: 5977980 (1999-11-01), Aleksicy

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