DocumentCode :
964736
Title :
Lattice-Based Volumetric Global Illumination
Author :
Feng Qiu ; Fang Xu ; Zhe Fan ; Neophytos, N. ; Kaufman, A. ; Mueller, K.
Author_Institution :
Stony Brook Univ., Stony Brook
Volume :
13
Issue :
6
fYear :
2007
Firstpage :
1576
Lastpage :
1583
Abstract :
We describe a novel volumetric global illumination framework based on the face-centered cubic (FCC) lattice. An FCC lattice has important advantages over a Cartesian lattice. It has higher packing density in the frequency domain, which translates to better sampling efficiency. Furthermore, it has the maximal possible kissing number (equivalent to the number of nearest neighbors of each site), which provides optimal 3D angular discretization among all lattices. We employ a new two-pass (illumination and rendering) global illumination scheme on an FCC lattice. This scheme exploits the angular discretization to greatly simplify the computation in multiple scattering and to minimize illumination information storage. The GPU has been utilized to further accelerate the rendering stage. We demonstrate our new framework with participating media and volume rendering with multiple scattering, where both are significantly faster than traditional techniques with comparable quality.
Keywords :
data visualisation; lighting; physics computing; rendering (computer graphics); angular discretization; face-centered cubic lattice; lattice-based volumetric global illumination; multiple scattering; packing density; rendering; FCC; Lattices; Light scattering; Lighting; Optical scattering; Particle scattering; Rendering (computer graphics); Sampling methods; Vectors; Visualization; FCC lattice; GPU.; Volume visualization; lattice; multiple scattering; participating media; sampling; volume rendering;
fLanguage :
English
Journal_Title :
Visualization and Computer Graphics, IEEE Transactions on
Publisher :
ieee
ISSN :
1077-2626
Type :
jour
DOI :
10.1109/TVCG.2007.70573
Filename :
4376189
Link To Document :
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