Direct Volume Rendering of Irregular Samples

  • René T. Rau
  • Wolfgang Straßer
Part of the Eurographics book series (EUROGRAPH)


Visualization of concentrations and density values is one of the main tasks of volume rendering systems. Whenever the sample points are not located on any kind of structured grid most visualization tools are not able to display the data without expensive resampling. We show that a simple forward mapping algorithm can handle this problem efficiently, whenever the reconstruction of the volume function uses spherical kernels. Different examples are discussed and we visualized a simulation from astrophysics which is based on smoothed particle hydrodynamics. Here gas dynamical processes are modelled by a system of pseudo particles where the positions are irregular and vary strongly in time. We produced high quality images which display the simulation data correctly and showed that in this situation our approach is superior to resampling strategies.


Computer Graphic Smooth Particle Hydrodynamic Volume Rendering Smooth Particle Hydrodynamic Volume Visualization 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag/Wien 1995

Authors and Affiliations

  • René T. Rau
    • 1
  • Wolfgang Straßer
    • 1
  1. 1.WSI/GRISUniversität TübingenTübingenGermany

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