Patent
1994-07-21
1997-02-04
Zimmerman, Mark K.
395121, 395122, 395131, G06T 1530, G06T 1700
Patent
active
056007639
ABSTRACT:
An antialiased rendering algorithm that guarantees that each pixel of the output image is within a user-specified error tolerance of the filtered underlying continuous image wherein an object-space octree is used to cull hidden geometry rapidly, and a quadtree data structure is used to test visibility through image-space regions. When regions are too complex, quadtree subdivision is employed to simplify the geometry. Subdivision stops when the algorithm can either analytically filter the required region or bound the convolution integral appropriately with interval methods.
REFERENCES:
patent: 4694404 (1987-09-01), Meagher
patent: 5123084 (1992-06-01), Prevost et al.
Foley et al., "Computer Graphics, principles and practice", second edition, Addison-Wesley Publishing Company, 1990, pp, 550-555, 673-675 and 686-698.
Samet et al., "Hierarchical Data Structures and Algorithms for Computer Graphics", IEEE Computer Graphics and Applications, Jul. 1988, pp. 59-75.
Greene Edward C.
Kass Michael H.
Apple Computer Inc.
Zimmerman Mark K.
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