A GPU-Supported Lossless Compression Scheme for Rendering Time-Varying Volume Data

Jörg Mensmann, Timo Ropinski, Klaus Hinrichs
IEEE/EG Volume Graphics, page 109--116 - 2010
Download the publication : vg10-compression.pdf [3.9Mo]  
Since the size of time-varying volumetric data sets typically exceeds the amount of available GPU and main memory, out-of-core streaming techniques are required to support interactive rendering. To deal with the performance bottlenecks of hard-disk transfer rate and graphics bus bandwidth, we present a hybrid CPU/GPU scheme for lossless compression and data streaming that combines a temporal prediction model, which allows to exploit coherence between time steps, and variable-length coding with a fast block compression algorithm. This combination becomes possible by exploiting the CUDA computing architecture for unpacking and assembling data packets on the GPU. The system allows near-interactive performance even for rendering large real-world data sets with a low signal-to-noise-ratio, while not degrading image quality. It uses standard volume raycasting and can be easily combined with existing acceleration methods and advanced visualization techniques.

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BibTex references

@inproceedings{MRH10a,
  author       = {Mensmann, J{\"o}rg and Ropinski, Timo and Hinrichs, Klaus},
  title        = {{A GPU-Supported Lossless Compression Scheme for Rendering Time-Varying Volume Data}},
  booktitle    = {IEEE/EG Volume Graphics},
  pages        = {109--116},
  year         = {2010}
}

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