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Published Articles >> Table of Contents >> Abstract
July/August 2004 (Vol. 24, No. 4)
pp. 64-72
Hierarchical Splatting of Scattered 4D Data
Matthias Hopf, University of Stuttgart, Germany
Michael Luttenberger, University of Stuttgart, Germany
Thomas Ertl, University of Stuttgart, Germany
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DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/MCG.2004.7
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| Abstract |
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Visualizing large uncorrelated point data sets with regular volume rendering produces unsatisfying results due to low spatial resolution. For time-dependent data, available main memory can be a limiting factor as well. To deal with these large time-varying data sets, a hierarchical representation is created and quantized relative coordinates are stored. During rendering the compressed data is accessed out of core, and particle positions are interpolated using B-splines. Traversing the hierarchical structure for each frame can trade-off rendering speed for image quality, achieving interactive rates for data sets with millions of points.
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 References
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[1] M. Hopf and T. Ertl,"Hierarchical Splatting of Scattered Data," Proc. Visualization 03, IEEE Press, 2003, pp. 443-440.
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[7] J. Meredith and K.-L. Ma,"Multiresolution View-Dependend Splat Based Volume Rendering of Large Irregular Data," Proc. Symp. Parallel and Large-Data Visualization and Graphics 01, IEEE Press, 2001, pp. 92-99.
[8] J. Jang et al., "View-Dependent Multiresolution Splatting of Non-Uniform Data," Proc. Eurographics VisSym 02, IEEE Press, 2002, pp. 125-132.
[9] S. Guthe and W. Straßer,"Real-time Decompression and Visualization of Animated Volume Data," Proc. Visualization 01, IEEE Press, 2001, pp. 349-356.
[10] H.-W. Shen, L.-J. Chiang,, and K.-L. Ma,"A Fast Volume Rendering Algorithm for Time-Varying Fields Using a Time-Space Partitioning (TSP) Tree," Proc. Visualization 99, IEEE Press, 1999, pp. 371-377.
[11] R. Farias and C.T. Sliva,"Out-Of-Core Rendering of Large, Unstructured Grids," IEEE Computer Graphics and Applications, vol. 21, no. 4, 2001, pp. 42-50.
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Additional References
[1] I.T. Jolliffe,Principal Component Analysis, Springer, 1986.
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 Additional Information
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Index Terms- volume rendering, scattered data, splatting, hierarchical visualization, time-dependent data, out-of-core techniques
Citation:
Matthias Hopf, Michael Luttenberger, Thomas Ertl,
"Hierarchical Splatting of Scattered 4D Data,"
IEEE Computer Graphics and Applications,
vol. 24,
no. 4,
pp. 64-72,
Jul/Aug,
2004
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