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Shape interrogation methods are of increasing interest in geometric modeling as
well as in computer graphics. Originating 20 years ago from CAD/CAM applications
where "class A" surfaces are required and no surface imperfections are allowed,
shape interrogation has become recently an important tool for various other
types of surface representations such as triangulated or polygonal surfaces,
subdivision surface, and algebraic surfaces. In this paper we present the
state-of-the-art of shape interrogation methods including methods for detecting
surface imperfections, surface analysis tools and methods for visualizing intrinsic surface properties. Furthermore we focus on stable numerical and symbolic solving of algebraic systems of equations, a problem that arises in most shape interrogation methods. |
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