Incremental frustum-cache acceleration of line integrals for...

Details Incremental frustum-cache acceleration of line integrals for... Incremental frustum-cache acceleration of line integrals for...

2007-08-28

2007-08-28

Jankus, Almis R. (Department: 2672)

Computer graphics processing and selective visual display system

Computer graphics processing

Three-dimension

Reexamination Certificate

active

10732172

ABSTRACT:
A method for rendering participating media effects is disclosed. At least one object having a surface is defined and a lattice, aligned with a camera, is also defined that encompasses the at least one object. A volumetric line integral is computed from the camera to lattice points in a neighborhood of a particular point on the surface of the object to obtain a value. The obtained value is filtered to obtain a volumetric line integral value for the particular point on the surface. Additionally, the set of values may be cached in memory and may be used in computing additional volumetric line integrals when applicable. The set of values determined for lattice points is filtered to determine the volumetric line integral value for a particular point on the surface.

REFERENCES:
Vannier et al., “Three Dimensional Computer Graphics for Craniofacial Surgical Planning and Evaluation”, Jul. 1983, ACM, pp. 263-273.
Castleman, “Digital Image Processing”, 1996, Prentice-Hall, Inc., pp. 247-249.

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