Interior distance using barycentric coordinates

R. M. Rustamov, Y. Lipman, T. Funkhouser

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

This paper introduces a framework for defining a shape-aware distance measure between any two points in the interior of a surface mesh. Our framework is based on embedding the surface mesh into a high-dimensional space in a way that best preserves boundary distances between vertices of the mesh, performing a mapping of the mesh volume into this high-dimensional space using barycentric coordinates, and defining the interior distance between any two points simply as their Euclidean distance in the embedding space. We investigate the theoretical properties of the interior distance in relation to properties of the chosen boundary distances and barycentric coordinates, and we investigate empirical properties of the interior distance using diffusion distance as the prescribed boundary distance and mean value coordinates. We prove theoretically that the interior distance is a metric, smooth, interpolating the boundary distances, and reproducing Euclidean distances, and we show empirically that it is insensitive to boundary noise and deformation and quick to compute. In case the barycentric coordinates are non-negative we also show a maximum principle exists. Finally, we use it to define a new geometric property, barycentroid of shape, and show that it captures the notion of semantic center of the shape.

Original languageEnglish (US)
Pages (from-to)1279-1288
Number of pages10
JournalEurographics Symposium on Geometry Processing
Volume28
Issue number5
StatePublished - Dec 1 2009

All Science Journal Classification (ASJC) codes

  • Modeling and Simulation
  • Geometry and Topology

Keywords

  • Distance measurement
  • Shape analysis

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    Rustamov, R. M., Lipman, Y., & Funkhouser, T. (2009). Interior distance using barycentric coordinates. Eurographics Symposium on Geometry Processing, 28(5), 1279-1288.