Proceedings Article10.1145/166117.166141
Smooth transitions between bump rendering algorithms
Barry G. Becker,Nelson Max +1 more
- 01 Sep 1993
- pp 183-190
TL;DR: A method is described for switching smoothly between rendering algorithms as required by the amount of visible surface detail, which will be more realism with less computation for displaying objects whose surface detail can be described by one or more bump maps.
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Abstract: A method is described for switching smoothly between rendering algorithms as required by the amount of visible surface detail. The result will be more realism with less computation for displaying objects whose surface detail can be described by one or more bump maps. The three rendering algorithms considered are a BRDF, bump mapping, and displacement mapping. The bump mapping has been modified to make it consistent with the other two. For a given viewpoint, one of these algorithms will show a better trade-off between quality, computation time, and aliasing than the other two. The decision as to which algorithm is appropriate is a function of distance, viewing angle, and the frequency of bumps in the bump map.
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Citations
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References
An image synthesizer
Ken Perlin
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Theory for off-specular reflection from roughened surfaces
K. E. Torrance,Ephraim M Sparrow +1 more
- 03 Jan 1992
TL;DR: In this paper, the directional distribution of radiant flux reflected from roughened surfaces is analyzed on the basis of geometrical optics, and the analysis successfully predicts the off-specular maxima in the reflection distribution which are observed experimentally and which emerge as the incidence angle increases.
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Theory for Off-Specular Reflection From Roughened Surfaces*
K. E. Torrance,Ephraim M Sparrow +1 more
TL;DR: In this paper, the directional distribution of radiant flux reflected from roughened surfaces is analyzed on the basis of geometrical optics, and the analysis successfully predicts the off-specular maxima in the reflection distribution which are observed experimentally and which emerge as the incidence angle increases.
1.8K
Models of light reflection for computer synthesized pictures
James F. Blinn
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TL;DR: A more accurate function for the generation of hilights which is based on some experimental measurements of how light reflects from real surfaces is presented, which differs from previous models in that the intensity of the hilight changes with the direction of the light source.
1.4K
•Book
A reflectance model for computer graphics
Robert L. Cook,Kenneth E. Torrance +1 more
- 01 Dec 1988
TL;DR: In this paper, the spectral energy distribution of the reflected light from an object made of a specific real material is obtained and a procedure for accurately reproducing the color associated with the spectrum is discussed.
1.4K