Piecewise smooth subdivision surfaces with normal control

  • Authors:
  • Henning Biermann;Adi Levin;Denis Zorin

  • Affiliations:
  • New York University;Tel Aviv University;New York University

  • Venue:
  • Proceedings of the 27th annual conference on Computer graphics and interactive techniques
  • Year:
  • 2000

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Abstract

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 the generation of surfaces with prescribed normals, both on the boundary and in the interior, which considerably improves control of the shape of surfaces.