by Michael M. Stark, Richard F. Riesenfeld
Rendering Techniques 2000 (Proceedings of the Eleventh Eurographics Workshop on Rendering
http://www.cs.utah.edu/~mstark/./papers/vertex_tracing/trace.ps
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Abstract:
Abstract. Methods for exact computation of irradiance and form factors associated with polygonal objects have ultimately relied on a formula for a differential area to polygon form factor attributed to Lambert. This paper presents an alternative, an analytical expression based on vertex behavior rather than the edges the polygon. Using this formulation, irradiance values in a scene consisting of partially occluded uniformly emitting polygons can be computed exactly by examining only the set of apparent vertices visible from the point of evaluation without explicit reconstruction of polygon contours. This leads to a fast, lowoverhead algorithm for exact illumination computation that involves no explicit polygon clipping and is applicable to direct lighting and to radiosity gathering across surfaces or at isolated points. 1 Introduction and Previous Work Fast and accurate computation of shadows continues to be one of the more perennial problems in computer graphics. Related problems include form-factor computation, visibility, and image reconstruction. In polygonal scenes, these problems ultimately
Citations
|
254
|
Radiosity and Realistic Image Synthesis
– Cohen, Wallace
- 1993
|
|
251
|
1984] Distributed Ray Tracing
– Cook, Porter
- 1984
|
|
243
|
The HemiCube: A Radiosity Solution for Complex Environment
– Greenberg
- 1985
|
|
129
|
Radiosity and Global Illumination
– Sillion, Puech
- 1994
|
|
102
|
Advanced Animation and Rendering Techniques
– WATT, WATT
- 1992
|
|
99
|
Discontinuity meshing for accurate radiosity
– Lischinski, Rampieri, et al.
- 1992
|
|
98
|
A Ray Tracing Algorithm For Progressive Radiosity
– Wallace, Elmquist, et al.
- 1989
|
|
92
|
Global visibility algorithms for illumination computations
– Teller, Hanrahan
- 1993
|
|
91
|
A Survey of Shadow Algorithms
– Woo, Poulin, et al.
- 1990
|
|
86
|
A fast shadow algorithm for area light sources using backprojection
– DRETTAKIS, E
- 1994
|
|
83
|
Visibility, occlusion, and the aspect graph
– Plantinga, Dyer
- 1990
|
|
75
|
Discontinuity Meshing for Radiosity
– HECKBERT
- 1992
|
|
74
|
François X. Sillion, Fast calculation of soft shadow textures using convolution
– Soler
- 1998
|
|
69
|
The visibility skeleton: a powerful and efficient multi-purpose global visibility tool
– Durand, Drettakis, et al.
- 1997
|
|
68
|
Ray Tracing with Cones
– AMANATIDES
- 1984
|
|
63
|
Continuous Tone Representation of Three-Dimensional Objects Taking Account of Shadows and Interreflection
– Nishita, Nakamae
|
|
58
|
Shaft Culling for Efficient Ray-Traced Radiosity
– HAINES, WALLACE
- 1991
|
|
40
|
The irradiance Jacobian for partially occluded polyhedralsources
– ARVO
- 1987
|
|
36
|
Polygon shadow generation
– Atherton, Weiler, et al.
|
|
29
|
Direct illumination with lazy visibility evaluation
– HART, DUTRÉ, et al.
- 1999
|
|
28
|
Analytic methods for simulated light transport
– Arvo
- 1995
|
|
18
|
Structured Sampling and Reconstruction of Illumination for Image Synthesis
– Drettakis
- 1994
|
|
10
|
Computing exact shadow irradiance using splines
– Stark, Cohen, et al.
- 1999
|
|
3
|
Vertex-based formulations of irradiance from polygonal sources
– Stark
- 2000
|
