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Displaying 1-6 out of 6 total
Ambient Occlusion Effects for Combined Volumes and Tubular Geometry
Found in: IEEE Transactions on Visualization and Computer Graphics
By M. Schott,T. Martin,A. V. P. Grosset,S. T. Smith,C. D. Hansen
Issue Date:June 2013
pp. 913-926
This paper details a method for interactive direct volume rendering that computes ambient occlusion effects for visualizations that combine both volumetric and geometric primitives, specifically tube-shaped geometric objects representing streamlines, magne...
Full-resolution interactive CPU volume rendering with coherent BVH traversal
Found in: 2011 IEEE Pacific Visualization Symposium (PacificVis)
By A Knoll,S Thelen,I Wald,C D Hansen,H Hagen,M E Papka
Issue Date:March 2011
pp. 3-10
We present an efficient method for volume rendering by ray casting on the CPU. We employ coherent packet traversal of an implicit bounding volume hierarchy, heuristically pruned using preintegrated transfer functions, to exploit empty or homogeneous space....
Similarity Measures for Enhancing Interactive Streamline Seeding
Found in: IEEE Transactions on Visualization and Computer Graphics
By T. McLoughlin,M. W. Jones,R. S. Laramee,R. Malki,I. Masters,C. D. Hansen
Issue Date:August 2013
pp. 1342-1353
Streamline seeding rakes are widely used in vector field visualization. We present new approaches for calculating similarity between integral curves (streamlines and pathlines). While others have used similarity distance measures, the computational expense...
Physically-Based Interactive Flow Visualization Based on Schlieren and Interferometry Experimental Techniques
Found in: IEEE Transactions on Visualization and Computer Graphics
By C. Brownlee,V. Pegoraro,S. Shankar,Patrick S. McCormick,C. D. Hansen
Issue Date:November 2011
pp. 1574-1586
Understanding fluid flow is a difficult problem and of increasing importance as computational fluid dynamics (CFD) produces an abundance of simulation data. Experimental flow analysis has employed techniques such as shadowgraph, interferometry, and schlier...
Direct Feature Visualization Using Morse-Smale Complexes
Found in: IEEE Transactions on Visualization and Computer Graphics
By A. Gyulassy,N. Kotava,M. Kim,C. D. Hansen,H. Hagen,V. Pascucci
Issue Date:September 2012
pp. 1549-1562
In this paper, we characterize the range of features that can be extracted from an Morse-Smale complex and describe a unified query language to extract them. We provide a visual dictionary to guide users when defining features in terms of these queries. We...
Fast data parallel polygon rendering
Found in: Proceedings of the 1993 ACM/IEEE conference on Supercomputing (Supercomputing '93)
By C. D. Hansen, F. A. Ortega, J. P. Ahrens
Issue Date:December 1993
pp. 709-718
This paper discusses scalability and outlines a specific approach to measuring the scalability of parallel computer systems. The relationship between scalability and speedup is described. It is shown that a parallel system is scalable for a given algorithm...