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Filters: Format: "application/pdf" Collection: "ir_uspace" Subject: "Isosurfaces"
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CreatorTitleDescriptionSubjectDate
1 Hansen, Charles D.Accelerated isosurface extraction in time-varying fieldsFor large time-varying data sets, memory and disk limitations can lower the performance of visualization applications. Algorithms and data structures must be explicitly designed to handle these data sets in order to achieve more interactive rates. The Temporal Branch-on-Need Octree (T-BON) extends t...Isosurfaces; Time-dependent scalar field visualization; Multiresolution methods; Octree; Bricking; Unstructured grid visualization; Out-of-core visualization2000
2 Hansen, Charles D.Case study of isosurface extraction algorithm performanceIsosurface extraction is an important and useful visualization method. Over the past ten years, the field has seen numerous isosurface techniques published, leaving the user in a quandary about which one should be used. Some papers have published complexity analysis of the techniques, yet empirical...Isosurfaces; Contours2000
3 Freire, Juliana; Silva, Claudio T.Enabling advanced visualization tools in a web-based simulation monitoring systemSimulations that require massive amounts of computing power and generate tens of terabytes of data are now part of the daily lives of scientists. Analyzing and visualizing the results of these simulations as they are computed can lead not only to early insights but also to useful knowledge that ca...Isosurfaces; Contour tree; Turbulent combustion; eSimMon2009-12
4 Hansen, Charles D.; Whitaker, Ross T.Interactive deformation and visualization of level set surfaces using graphics hardwareDeformable isosurfaces, implemented with level-set methods, have demonstrated a great potential in visualization for applications such as segmentation, surface processing, and surface reconstruction. Their usefulness has been limited, however, by their high computational cost and and reliance on sig...Deformation; Level sets; Deformable models; Image segmentation; Volume visualization; GPU; Streaming computation; Isosurfaces2003
5 Parker, Steven G.; Hansen, Charles D.; Shirley, Peter S.Interactive ray tracing for volume visualizationWe present a brute-force ray tracing system for interactive volume visualization, The system runs on a conventional (distributed) shared-memory multiprocessor machine. For each pixel we trace a ray through a volume to compute the color for that pixel. Although this method has high intrinsic computa...Ray tracing; Volume visualization; Isosurfaces; Maximum-intensity projection; Traversal optimizations1999
6 Johnson, Christopher R.; Parker, Steven G.; Hansen, Charles D.Interactive simulation and visualizationMost of us perform data analysis and visualization only after everything else is finished, which often means that we don't discover errors invalidating the results of our simulation until postprocessing. A better approach would be to improve the integration of simulation and visualization into the...Computational steering; Interactive simulation; Isosurfaces1999
7 Hansen, Charles D.Isosurface extraction in time-varying fields using a temporal branch-on-need tree (T-BON)The Temporal Branch-on-Need Tree (T-BON) extends the threedimensional branch-on-need octree for time-varying isosurface extraction. At each time step, only those portions of the tree and data necessary to construct the current isosurface are read from disk. This algorithm can thus exploit the tempor...Isosurfaces; Time-dependent scalar field visualization; Octree; Multiresolution methods1999
8 Whitaker, Ross T.Isosurfaces and level-set surface modelsThis paper is a set of notes that present the basic geometry of isosurfaces and the basic methods for using level sets to model deformable surfaces. It begins with a short introduction to isosurface geometry, including curvature. It continues with a short explanation of the level-set partial diff...Isosurfaces; Level-set surface models2002-04-03
9 Parker, Steven G.; Hansen, Charles D.; Shirley, Peter S.Parallel methods for isosurface visualizationisosurface extraction and vis utilization is crucial for explorative scientific visualization of extremely large scientific data. The shear number of polygons extracted and the subsequent rendering time limit interactivity. We explore two solutions to this problem: exploiting parallel graphics hardw...Isosurfaces; Ray tracing; Large data1999
10 Hansen, Charles D.Volume rendering multivariate data to visualize meteorological simulations: a case studyHigh resolution computational weather models are becoming increasing complex. However, the analysis of these models has not benefited from recent advancements in volume visualization. This case study applies the ideas and techniques from multi-dimensional transfer function based volume rendering to ...Volume rendering; Direct volume rendering; Isosurfaces; Ray casting; Ray differentials; Transfer function; Preintegration; View dependent2002
11 Hansen, Charles D.Wavelet representation of contour setsWe present a new wavelet compression and multiresolution modeling approach for sets of contours (level sets). In contrast to previous wavelet schemes, our algorithm creates a parametrization of a scalar field induced by its contours and compactly stores this parametrization rather than function valu...Contours; Geometry compression; Isosurfaces; Level sets; Multiresolution methods; Wavelets2001
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