Visualization of Astronomical Nebulae via Distributed Multi-GPU Compressed Sensing Tomography
Visualization of Astronomical Nebulae via Distributed Multi-GPU Compressed Sensing Tomography
复制标题
通过分布式多 GPU 压缩感知断层扫描实现天文星云的可视化
DOI:
10.1109/tvcg.2012.281
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发表时间:
2012
影响因子:
5.2
通讯作者:
Marcus
中科院分区:
文献类型:
--
作者:
Wenger;Stephan;Stefan;Lorenz;Tillmann;Andreas;Weiskopf;Daniel;Magnor;Marcus
The 3D visualization of astronomical nebulae is a challenging problem since only a single 2D projection is observable from our fixed vantage point on Earth. We attempt to generate plausible and realistic looking volumetric visualizations via a tomographic approach that exploits the spherical or axial symmetry prevalent in some relevant types of nebulae. Different types of symmetry can be implemented by using different randomized distributions of virtual cameras. Our approach is based on an iterative compressed sensing reconstruction algorithm that we extend with support for position-dependent volumetric regularization and linear equality constraints. We present a distributed multi-GPU implementation that is capable of reconstructing high-resolution datasets from arbitrary projections. Its robustness and scalability are demonstrated for astronomical imagery from the Hubble Space Telescope. The resulting volumetric data is visualized using direct volume rendering. Compared to previous approaches, our method preserves a much higher amount of detail and visual variety in the 3D visualization, especially for objects with only approximate symmetry.
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DOI:
--
发表时间:
2008
期刊:
Canadian Conference on Computer Science & Software Engineering
影响因子:
--
作者:
C. Melvin;Meilian Xu;P. Thulasiraman
通讯作者:
P. Thulasiraman
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
F. Sabbadin;M. Turatto;R. Ragazzoni;E. Cappellaro;S. Benetti
通讯作者:
S. Benetti
影响因子:
--
作者:
S. Wenger;J. Fernández;C. Morisset;M. Magnor
通讯作者:
M. Magnor
影响因子:
2.1
作者:
Beck, Amir;Teboulle, Marc
通讯作者:
Teboulle, Marc
DOI:
10.1086/175123
发表时间:
1995
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Z. Wen;C. O’Dell
通讯作者:
C. O’Dell