Piecewise Smooth Subdivision Surfaces with Normal Control

D. Zorin, H. Biermann and A. Levin


In this paper we introduce improved rules for Catmull-Clark and Loop subdivision that overcome several problems with the original schemes, namely, lack of smoothness at extraordinary boundary vertices and folds near concave corners. In addition, our approach to rule modification allows generation of surfaces with prescribed normals, both on the boundary and in the interior, which considerably improves control of the shape of surfaces.
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BiBTeX entry

author = "H. Biermann and A. Levin and D. Zorin",
title = "Piecewise Smooth Subdivision Surfaces With Normal Control",
booktitle = "Proceedings of SIGGRAPH 2000, Computer Graphics Proceedings, Annual Conference Series",
year = 2000,
pages = "113--120")