Interactive rendering of large unstructured grids using dynamic level-of-detail

Steven P. Callahan, João L D Comba, Peter Shirley, Claudio T. Silva

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We describe a new dynamic level-of-detail (LOD) technique that allows real-time rendering of large tetrahedral meshes. Unlike approaches that require hierarchies of tetrahedra, our approach uses a subset of the faces that compose the mesh. No connectivity is used for these faces so our technique eliminates the need for topological information and hierarchical data structures. By operating on a simple set of triangular faces, our algorithm allows a robust and straightforward graphics hardware (GPU) implementation. Because the subset of faces processed can be constrained to arbitrary size, interactive rendering is possible for a wide range of data sets and hardware configurations.

Original languageEnglish (US)
Title of host publicationVIS 05
Subtitle of host publicationIEEE Visualization 2005, Proceedings
Number of pages1
StatePublished - 2005
EventVIS 05: IEEE Visualization 2005, Proceedings - Minneapolis, MN, United States
Duration: Oct 23 2005Oct 28 2005

Publication series

NameProceedings of the IEEE Visualization Conference


OtherVIS 05: IEEE Visualization 2005, Proceedings
Country/TerritoryUnited States
CityMinneapolis, MN


  • Interactive volume rendering
  • Level-of-detail
  • Multiresolution meshes
  • Tetrahedral meshes

ASJC Scopus subject areas

  • Software
  • General Computer Science
  • General Engineering
  • Computer Graphics and Computer-Aided Design


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