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Displaying 1-7 out of 7 total
Visualizing Nuclear Scission through a Multifield Extension of Topological Analysis
Found in: IEEE Transactions on Visualization and Computer Graphics
By David Duke,Hamish Carr,Aaron Knoll,Nicolas Schunck,Hai Ah Nam,Andrzej Staszczak
Issue Date:December 2012
pp. 2033-2040
In nuclear science, density functional theory (DFT) is a powerful tool to model the complex interactions within the atomic nucleus, and is the primary theoretical approach used by physicists seeking a better understanding of fission. However DFT simulation...
 
Volume Ray Casting with Peak Finding and Differential Sampling
Found in: IEEE Transactions on Visualization and Computer Graphics
By Aaron Knoll, Younis Hijazi, Rolf Westerteiger, Mathias Schott, Charles Hansen, Hans Hagen
Issue Date:November 2009
pp. 1571-1578
Direct volume rendering and isosurfacing are ubiquitous rendering techniques in scientific visualization, commonly employed in imaging 3D data from simulation and scan sources. Conventionally, these methods have been treated as separate modalities, necessi...
 
Interactive Ray Tracing of Arbitrary Implicits with SIMD Interval Arithmetic
Found in: Symposium on Interactive Ray Tracing
By Aaron Knoll, Younis Hijazi, Charles Hansen, Ingo Wald, Hans Hagen
Issue Date:September 2007
pp. 11-18
We present a practical and efficient algorithm for interactively ray tracing arbitrary implicit surfaces. We use interval arithmetic (IA) both for robust root computation and guaranteed detection of topological features. In conjunction with ray tracing, th...
 
Volume rendering with multidimensional peak finding
Found in: Visualization Symposium, IEEE Pacific
By Natallia Kotava,Aaron Knoll,Mathias Schott,Christoph Garth,Xavier Tricoche,Christoph Kessler,Elaine Cohen,Charles D. Hansen,Michael E. Papka,Hans Hagen
Issue Date:March 2012
pp. 161-168
Peak finding provides more accurate classification for direct volume rendering by sampling directly at local maxima in a transfer function, allowing for better reproduction of high-frequency features. However, the 1D peak finding technique does not extend ...
 
Ray tracing and volume rendering large molecular data on multi-core and many-core architectures
Found in: Proceedings of the 8th International Workshop on Ultrascale Visualization (UltraVis '13)
By Aaron Knoll, Kelly P. Gaither, Michael E. Papka, Paul A. Navrátil, Ingo Wald
Issue Date:November 2013
pp. 1-8
Visualizing large molecular data requires efficient means of rendering millions of data elements that combine glyphs, geometry and volumetric techniques. The geometric and volumetric loads challenge traditional rasterization-based vis methods. Ray casting ...
     
Ray tracing animated scenes using coherent grid traversal: Copyright restrictions prevent ACM from providing the full text for this work.
Found in: ACM SIGGRAPH 2006 Papers (SIGGRAPH '06)
By Aaron Knoll, Andrew Kensler, Ingo Wald, Steven G. Parker, Thiago Ize
Issue Date:July 2006
pp. 1-es
We present a new approach to interactive ray tracing of moderate-sized animated scenes based on traversing frustum-bounded packets of coherent rays through uniform grids. By incrementally computing the overlap of the frustum with a slice of grid cells, we ...
     
Ray tracing animated scenes using coherent grid traversal: Copyright restrictions prevent ACM from providing the full text for this work.
Found in: Material presented at the ACM SIGGRAPH 2006 conference (SIGGRAPH '06)
By Aaron Knoll, Andrew Kensler, Ingo Wald, Steven G. Parker, Thiago Ize
Issue Date:July 2006
pp. 1-es
We present a new approach to interactive ray tracing of moderate-sized animated scenes based on traversing frustum-bounded packets of coherent rays through uniform grids. By incrementally computing the overlap of the frustum with a slice of grid cells, we ...
     
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