Piecewise smooth subdivision surfaces with normal control

1 January 2000

proceedings article
Published by Association for Computing Machinery (ACM)

p. 113-120
https://doi.org/10.1145/344779.344841

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.

Keywords

LOOP SUBDIVISION
CONCAVE CORNER
EXTRAORDINARY BOUNDARY VERTEX
ORIGINAL SCHEME
NORMAL CONTROL
BOUNDARY CONTROL
PIECEWISE SMOOTH SUBDIVISION SURFACE
PRESCRIBED NORMAL
SUBDIVISION SURFACES
IMPROVED RULE
SUBDIVISION SURFACE

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