Progressive volume rendering of large unstructured grids

Steven P. Callahan, Louis Bavoil, Valerio Pascucci, Cláudio T. Silva

Research output: Contribution to journalArticlepeer-review


We describe a new progressive technique that allows real-time rendering of extremely large tetrahedral meshes. Our approach uses a client-server architecture to incrementally stream portions of the mesh from a server to a client which refines the quality of the approximate rendering until it converges to a full quality rendering. The results of previous steps are re-used in each subsequent refinement, thus leading to an efficient rendering. Our novel approach keeps very little geometry on the client and works by refining a set of rendered images at each step. Our interactive representation of the dataset is efficient, light-weight, and high quality. We present a framework for the exploration of large datasets stored on a remote server with a thin client that is capable of rendering and managing full quality volume visualizations.

Original languageEnglish (US)
Pages (from-to)1307-1314
Number of pages8
JournalIEEE Transactions on Visualization and Computer Graphics
Issue number5
StatePublished - Sep 2006


  • Client-server
  • Large unstructured grids
  • Level-of-detail
  • Progressive rendering
  • Volume rendering

ASJC Scopus subject areas

  • Software
  • Signal Processing
  • Computer Vision and Pattern Recognition
  • Computer Graphics and Computer-Aided Design


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