Low-degree approximation of high-degree B-spline surfaces |
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Authors: | Mr S T Tuohy L Bardis |
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Affiliation: | (1) Department of Ocean Engineering, Design Laboratory, Massachusetts Institute of Technology, Room 5-422, 02139-4307 Cambridge, MA, USA;(2) Department of Naval Architecture and Marine Engineering, National Technical University of Athens, 157 80 Zographou, Athens, Greece |
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Abstract: | In this paper, a method for approximate conversion of high degree Bezier and B-spline surfaces to lower degree representations is presented to facilitate the exchange of surface geometry between different geometric modeling systems. Building on previous work on curve approximation, the method uses adaptive sampling to compute approximation error and lofting of isoparametric curves to produce the approximating surface. In addition, a bound for the approximation accuracy is computed using convex hulls. |
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Keywords: | Data exchange Surface approximation |
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