Volumetric Cell-and-Portal Generation

Computer Graphics Forum, Volume 3-22 - 2003
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We present an algorithm to generate a cell-and-portal decomposition of general indoor scenes. The method is an adaptation of the 3D watershed transform, computed on a distance-to-geometry sampled field. The watershed is processed using a flooding analogy in the distance field space. Flooding originates from local minima, each minimum producing a region. Portals are built as needed to avoid the merging of regions during their growth. As a result, the cell it deals with parametric curves, implicit surfaces, volumetric data and polygon soups in a unified way.

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BibTex references

  author       = "Haumont, Denis and Debeir, Olivier and Sillion, Fran\c{c}ois",
  title        = "Volumetric Cell-and-Portal Generation",
  booktitle    = "Computer Graphics Forum",
  series       = "EUROGRAPHICS Conference Proceedings",
  volume       = "3-22",
  year         = "2003",
  publisher    = "Blackwell Publishers",
  url          = "http://artis.imag.fr/Publications/2003/HDS03"

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