Computer graphics processing and selective visual display system – Computer graphics processing – Attributes
Reexamination Certificate
2005-07-12
2005-07-12
Bella, Matthew C. (Department: 2676)
Computer graphics processing and selective visual display system
Computer graphics processing
Attributes
C345S420000, C345S611000
Reexamination Certificate
active
06917369
ABSTRACT:
A method and apparatus render a region of a distance field representing an object. The distance field is partitioned into a set of cells, where each cell includes a set of distance samples and a method for reconstructing the distance field within the cell using the distance samples. A set of source cells is selected from the set of cells of the distance field to enable the rendering of the region. Each source cell is represented as a geometric element in a world coordinate system. Each geometric element is associated with a texture map, where the texture map includes distance samples of the corresponding source cell of the geometric element. Each geometric element is transformed from the world coordinate system to a pixel coordinate system and texture mapped, using the distance samples, to determine a distance for each component of each pixel associated with the geometric element. The distance of each component of each pixel is mapped to an antialiased intensity of the component of the pixel.
REFERENCES:
patent: 5542036 (1996-07-01), Schroeder et al.
patent: 5875040 (1999-02-01), Matraszek et al.
patent: 5982387 (1999-11-01), Hellmann
patent: 6037949 (2000-03-01), DeRose et al.
patent: 6188385 (2001-02-01), Hill et al.
patent: 6329977 (2001-12-01), McNamara et al.
patent: 6377262 (2002-04-01), Hitchcock et al.
patent: 6396492 (2002-05-01), Frisken et al.
patent: 6603484 (2003-08-01), Frisken et al.
patent: 6721446 (2004-04-01), Wilensky et al.
patent: 6741246 (2004-05-01), Perry et al.
patent: 2002/0097912 (2002-07-01), Kimmel et al.
Frisken, S. et al., “Adaptively Sampled Distance Fields: A General Representation of Shape for Computer Graphics,” SIGGRAPH 2000, pp 249-254.
Jeng, E.K.-Y.; Xiang, Z.; “Fast Soft Shadow Visualization for Deformable Moving Light Sources Using Adaptively Sampled Light Field Shadow Maps;” Proceedings of the 10th Pacific Conference on Computer Graphics and Applications (PG'02); 2002.
Russ, J.C., “The Image Processing Handbook,” CRC Press LLC, 2002, pp 425-429.
Crawfis, R.A.; Max, N.; “Texture Splats for 3D Scalar and Vector Field Visualization,” Proceedings of IEEE Visualization '93, 1993, pp. 261-265.
ACM Search Report.
Hersch et al., “Perceptually Tuned Generation of Grayscale Fonts,” IEEE CG&A, Nov., pp. 78-89, 1995.
Perry, et al., “Kizamu: A System for Sculpting Digital Characters,” Proceedings ACM SIGGRAPH 2001, pp. 47-56, 2001.
Frisken, et al., “Adaptively Sampled Distance Fields: a General Representation of Shape for Computer Graphics,” Proceedings ACM SIGGRAPH 2000, pp. 249-254, 2000.
Sederberg, et al., “Geometric Hermite Approximation of Surface Patch Intersection Curves,” CAGD, 8 (2), pp. 97-114, 1991.
Platt, in “Optimal Filtering for Patterned Displays,” IEEE Signal Processing Letters, 7 (7), pp. 179-180, 2000.
Hoff, et al., “Fast and Simple 2D Geometric Proximity Queries Using Graphics Hardware,” Proc. Interactive 3D Graphics'01, 2001.
Frisken Sarah F.
Perry Ronald N.
Bella Matthew C.
Brautigam Alysa N.
Brinkman Dirk
Curtin Andrew J.
Mitsubishi Electric Research Labs Inc.
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