Journal Article10.1109/MCG.1984.6429330
Generating soft shadows with a depth buffer algorithm
L. S. Brotman,Norman I. Badler +1 more
116
TL;DR: An algorithm is developed that combines an existing shadowing method with a popular visible surface rendering technique, called a depth buffer, to generate soft shadows resulting from light sources of finite extent.
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Abstract: A pragmatic approach is taken to develop an algorithm that combines an existing shadowing method with a popular visible surface rendering technique, called a depth buffer, to generate soft shadows resulting from light sources of finite extent. The method extends F. Crow's shadow volume algorithm (1977) to produce multiple shadows overlapped to yield the characteristic soft edges of a shadow penumbra.
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Citations
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TL;DR: In this paper, a view interpolation approach to synthesize 3D scenes has been proposed, which combines interpolation of texture maps and their shape, is applied to computing arbitrary intermediate frames from an array of prestored images.
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Fast spheres, shadows, textures, transparencies, and imgage enhancements in pixel-planes
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TL;DR: This paper describes a system architecture that supports realtime generation of complex images, efficient generation of extremely high-quality images, and a smooth trade-off between the two.
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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.
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Hierarchical geometric models for visible surface algorithms
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Arthur Appel
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TL;DR: If techniques for the automatic determination of chiaroscuro with good resolution should prove to be competitive with line drawings, and this is a possibility, machine generated photographs might replace line drawings as the principal mode of graphical communication in engineering and architecture.
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