2003 | OriginalPaper | Chapter
Discrete Differential-Geometry Operators for Triangulated 2-Manifolds
Authors : Mark Meyer, Mathieu Desbrun, Peter Schröder, Alan H. Barr
Published in: Visualization and Mathematics III
Publisher: Springer Berlin Heidelberg
Included in: Professional Book Archive
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This paper proposes a unified and consistent set of flexible tools to approximate important geometric attributes, including normal vectors and curvatures on arbitrary triangle meshes. We present a consistent derivation of these first and second order differential properties using averaging Voronoi cells and the mixed Finite-Element/Finite-Volume method, and compare them to existing formulations. Building upon previous work in discrete geometry, these operators are closely related to the continuous case, guaranteeing an appropriate extension from the continuous to the discrete setting: they respect most intrinsic properties of the continuous differential operators. We show that these estimates are optimal in accuracy under mild smoothness conditions, and demonstrate their numerical quality. We also present applications of these operators, such as mesh smoothing, enhancement, and quality checking, and show results of denoising in higher dimensions, such as for tensor images.