Quasiconvolutional smoothing of polyhedra |
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Authors: | Richard Lobb |
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Affiliation: | (1) Department of Computer Science, University of Auckland, Private Bag 92019, Auckland, New Zealand |
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Abstract: | This paper describes a method for rounding edges and corners of arbitrary polyhedra that uses a fast approximation to convolutional filtering. The approximation defines an implicit surface, which is rendered with a specialised ray-tracing algorithm. By varying the radius of the smoothing filter, a wide range of effects can be obtained, from perfect polyhedra to blobby models . Small rounding radii give polyhedra a softer, more natural look, with edges well delineated by shadows and highlights. The rounded surfaces are much easier to specify and compute than those obtained by traditional filleting and surface-blending techniques, and are far more economical in storage. |
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Keywords: | Rounding Convolution Implicit surface Ray tracing Constructive solid geometry |
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