A novel volume constrained smoothing method for meshes

  • Authors:
  • Xinguo Liu;Hujun Bao;Heung-Yeung Shum;Qunsheng Peng

  • Affiliations:
  • Microsoft Research Asia, 3F Sigma Center, No. 49 Zhichun Road, Haidian District Beijing 100080, China;State Key Lab. of CAD&CG, Zhejiang University, Hangzhou 310027, China;Microsoft Research Asia, 3F Sigma Center, No. 49 Zhichun Road, Haidian District Beijing 100080, China;State Key Lab. of CAD&CG, Zhejiang University, Hangzhou 310027, China

  • Venue:
  • Graphical Models - Special issue: Processing on large polygonal meshes
  • Year:
  • 2002

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Abstract

In general, mesh smoothing is performed by minimizing the discrete energy function for the surface. One of the major problems in mesh smoothing is to prevent the mesh from shrinking. In this paper, we propose a novel volume constraint to address the shrinking problem in mesh smoothing. Our key observation is that the mesh can be efficiently smoothed patch by patch in a signal processing manner, and then a local volume preserving constraint can be easily imposed to the energy minimization problem associated with the small patch, called the smoothing stencil, so as to effectively avoid the mesh shrinkage. In our implementation, the smoothing stencil is the 1-ring neighboring region of an edge or a triangle. And the constrained minimization problem is solved by a 2-step approximation method for efficiency. A series of examples demonstrate that the proposed smoothing method can be applied to remove noise from a mesh or remove rough detail from an original mesh to generate a smooth model in object reconstruction and geometry modeling.