Acceleration of opacity correction mechanisms for over-sampled volume ray casting

  • Authors:
  • Jong Kwan Lee;Timothy S. Newman

  • Affiliations:
  • Department of Computer Science, University of Alabama in Huntsville;Department of Computer Science, University of Alabama in Huntsville

  • Venue:
  • EG PGV'08 Proceedings of the 8th Eurographics conference on Parallel Graphics and Visualization
  • Year:
  • 2008

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Abstract

Techniques for accelerated opacity correction for over-sampled volume ray casting on commodity hardware are described. The techniques exploit processing capabilities of programmable GPUs and cluster computers. The GPU-based technique follows a fine-grained parallel approach that exposes to the GPU the inherent parallelism in the opacity correction process. The cluster computation techniques follow less finely-granular data parallel approaches that allow exploitation of computational resources with minimal inter-CPU communication. The performance improvements offered by the accelerated approaches over opacity correction on a single CPU are also exhibited for real volumetric datasets.