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Computing minimum distance between two implicit algebraic surfaces
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DOI：10.1016/j.cad.2006.04.012.png)
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摘要
En 中文
The minimum distance computation problem between two surfaces is very important in many applications such as robotics, CAD/CAM and computer graphics. Given two implicit algebraic surfaces, a new method based on the offset technique is presented to compute the minimum distance and a pair of points where the minimum distance occurs. The new method also works where there are an implicit algebraic surface and a parametric surface. Quadric surfaces, tori and canal surfaces are used to demonstrate our new method. When the two surfaces are a general quadric surface and a surface which is a cylinder, a cone or an elliptic paraboloid, the new method can produce two bivariate equations where the degrees are lower than those of any existing method. (C) 2006 Elsevier Ltd. All rights reserved.
Keyword:
minimum distance
offset
canal surface
implicit algebraic surface
parametric surface
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