Tracking and visualizing turbulent 3D features

Silver, Deborah; Wang, Xin

doi:10.1109/2945.597796

Cited by 158 publications

(102 citation statements)

References 27 publications

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“…Since the isosurface is fixed, we need to store only one seed cell per isosurface component, which hardly affects the compression ratio. We can also compress the selected set of components in isosurfaces and volumes, and their evolution by using the feature tracking method [24]. The reconstructed features can be rendered in real-time using PC graphics hardware.…”

Section: Introductionmentioning

confidence: 99%

Volumetric video compression for interactive playback

Sohn

Bajaj

Siddavanahalli

2004

Computer Vision and Image Understanding

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We develop a volumetric video system which supports interactive browsing of compressed timevarying volumetric features (significant isosurfaces and interval volumes). Since the size of even one volumetric frame in a time-varying 3D data set is very large, transmission and on-line reconstruction are the main bottlenecks for interactive remote visualization of time-varying volume and surface data. We describe a compression scheme for encoding time-varying volumetric features in a unified way, which allows for on-line reconstruction and rendering. To increase the run-time decompression speed and compression ratio, we decompose the volume into small blocks and encode only the significant blocks that contribute to the isosurfaces and interval volumes. The results show that our compression scheme achieves high compression ratio with fast reconstruction, which is effective for client-side rendering of time-varying volumetric features.

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Section: Introductionmentioning

confidence: 99%

Volumetric video compression for interactive playback

Sohn

Bajaj

Siddavanahalli

2004

Computer Vision and Image Understanding

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“…Silver and Wang [14] and Samtaney et al [12]). Making explicit use of the temporal interpolation, Weigle and Banks [19] extract features in the form of four-dimensional isosurfaces.…”

Section: Related Workmentioning

confidence: 99%

Topological Methods for Visualizing Vortical Flows

Tricoche

Garth

2009

Mathematics and Visualization

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Summary. The paper describes the application of topological methods to the visualization of vortical flow patterns that arise in simulations from Computational Fluid Dynamics. Two techniques are presented: the first is concerned with the exploration of complicated, instantaneous flow structures while the second one permits the visualization of their temporal evolution in large-scale transient simulations. In both cases the mathematical framework is derived from the notion of parametric topology. This yields a unified formalism that permits to efficiently address the challenges raised by typical flow problems. The benefits of this approach are demonstrated in the analysis and visualization of transient vortical flows that undergo the phenomenon of vortex breakdown.

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“…Methods in the former category use various forms of overlap and/or distance between geometric attributes, e.g., the center of gravity [6] or volume overlap [7,8] for tracking. Laney et al [9] use a similar approach to track bubble structures in turbulent mixing.…”

Section: Related Workmentioning

confidence: 99%

“…Sohn and Bajaj [15] introduce a hybrid approach using volume matching similar to Silver and Wang [7,8] instead of topological information [13,14] to define correspondences between contour trees. Geometric tracking, in general, is ill-suited for the flame surfaces of interest here.…”

Section: Related Workmentioning

confidence: 99%

Feature Tracking Using Reeb Graphs

Weber

Bremer

Day

et al. 2010

Mathematics and Visualization

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Abstract. Tracking features and exploring their temporal dynamics can aid scientists in identifying interesting time intervals in a simulation and serve as basis for performing quantitative analyses of temporal phenomena. In this paper, we develop a novel approach for tracking subsets of isosurfaces, such as burning regions in simulated flames, which are defined as areas of high fuel consumption on a temperature isosurface. Tracking such regions as they merge and split over time can provide important insights into the impact of turbulence on the combustion process. However, the convoluted nature of the temperature isosurface and its rapid movement make this analysis particularly challenging. Our approach tracks burning regions by extracting a temperature isovolume from the four-dimensional space-time temperature field. It then obtains isosurfaces for the original simulation time steps and labels individual connected "burning" regions based on the local fuel consumption value. Based on this information, a boundary surface between burning and non-burning regions is constructed. The Reeb graph of this boundary surface is the tracking graph for burning regions.

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Tracking and visualizing turbulent 3D features

Cited by 158 publications

References 27 publications

Volumetric video compression for interactive playback

Volumetric video compression for interactive playback

Topological Methods for Visualizing Vortical Flows

Feature Tracking Using Reeb Graphs

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