Skeleton extraction by mesh contraction

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

285 Scopus Citations
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Author(s)

  • Oscar Kin-Chung Au
  • Chiew-Lan Tai
  • Hung-Kuo Chu
  • Daniel Cohen-Or
  • Tong-Yee Lee

Detail(s)

Original languageEnglish
Article number44
Journal / PublicationACM Transactions on Graphics
Volume27
Issue number3
Publication statusPublished - 1 Aug 2008
Externally publishedYes

Abstract

Extraction of curve-skeletons is a fundamental problem with many applications in computer graphics and visualization. In this paper, we present a simple and robust skeleton extraction method based on mesh contraction. The method works directly on the mesh domain, without pre-sampling the mesh model into a volumetric representation. The method first contracts the mesh geometry into zero-volume skeletal shape by applying implicit Laplacian smoothing with global positional constraints. The contraction does not alter the mesh connectivity and retains the key features of the original mesh. The contracted mesh is then converted into a 1D curve-skeleton through a connectivity surgery process to remove all the collapsed faces while preserving the shape of the contracted mesh and the original topology. The centeredness of the skeleton is refined by exploiting the induced skeleton-mesh mapping. In addition to producing a curve skeleton, the method generates other valuable information about the object's geometry, in particular, the skeleton-vertex correspondence and the local thickness, which are useful for various applications. We demonstrate its effectiveness in mesh segmentation and skinning animation. © 2008 ACM.

Research Area(s)

  • Laplacian, Mesh contraction, Segmentation, Skeleton, Skinning, Smoothing

Citation Format(s)

Skeleton extraction by mesh contraction. / Au, Oscar Kin-Chung; Tai, Chiew-Lan; Chu, Hung-Kuo; Cohen-Or, Daniel; Lee, Tong-Yee.

In: ACM Transactions on Graphics, Vol. 27, No. 3, 44, 01.08.2008.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review