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Displaying 1-15 out of 15 total
Ambient Volume Scattering
Found in: IEEE Transactions on Visualization and Computer Graphics
By Marco Ament,Filip Sadlo,Daniel Weiskopf
Issue Date:December 2013
pp. 2936-2945
We present ambient scattering as a preintegration method for scattering on mesoscopic scales in direct volume rendering. Far-range scattering effects usually provide negligible contributions to a given location due to the exponential attenuation with incre...
 
2012 IEEE Visualization Contest Winner: Visualizing Polarization Domains in Barium Titanate
Found in: IEEE Computer Graphics and Applications
By Katrin Scharnowski,Michael Krone,Filip Sadlo,Philipp Beck,Johannes Roth,Hans-Rainer Trebin,Thomas Ertl
Issue Date:September 2013
pp. 9-17
The winners of the 2012 IEEE Visualization Contest combined methods from molecular, flow, and scalar data visualization to reveal the characteristics and processes in the contest data. Because the simulated material didn't behave according to theory from t...
 
Explorable Volumetric Depth Images from Raycasting
Found in: 2013 XXVI SIBGRAPI - Conference on Graphics, Patterns and Images (SIBGRAPI)
By Steffen Frey,Filip Sadlo,Thomas Ertl
Issue Date:August 2013
pp. 123-130
View-dependent image-based rendering techniques have become increasingly popular as they combine the high quality of images with the explorability of interactive techniques. However, in the context of volume rendering, previous approaches suffer from vario...
 
Dye-Based Flow Visualization
Found in: Computing in Science & Engineering
By Grzegorz K. Karch,Filip Sadlo,Daniel Weiskopf,Charles D. Hansen,Guo-Shi Li,Thomas Ertl
Issue Date:November 2012
pp. 80-86
Computational dye advection helps engineers understand fluid dynamics simulations by providing interactive tools that mimic physical experiments.
 
Distributed Computation and Large-Scale Visualization in Heterogeneous Compute Environments
Found in: 2012 11th International Symposium on Parallel and Distributed Computing (ISPDC)
By Alexandros Panagiotidis,Daniel Kauker,Filip Sadlo,Thomas Ertl
Issue Date:June 2012
pp. 87-94
High performance computing still typically disregards heterogeneous environments and focuses on homogeneous clusters. While providing advantages and easing development, this fails to address the recent change toward heterogeneous computing infrastructure. ...
 
Visualization of Cell-Based Higher-Order Fields
Found in: Computing in Science and Engineering
By Filip Sadlo, Markus Uffinger, Christian Pagot, Daniel Osmari, João Comba, Thomas Ertl, Claus-Dieter Munz, Daniel Weiskopf
Issue Date:May 2011
pp. 84-91
<p>Direct visualization of higher-order data avoids the error and overhead introduced by the widely used resampling approach.</p>
 
Hierarchical Line Integration
Found in: IEEE Transactions on Visualization and Computer Graphics
By Marcel Hlawatsch, Filip Sadlo, Daniel Weiskopf
Issue Date:August 2011
pp. 1148-1163
This paper presents an acceleration scheme for the numerical computation of sets of trajectories in vector fields or iterated solutions in maps, possibly with simultaneous evaluation of quantities along the curves such as integrals or extrema. It addresses...
 
Coherent Structures of Characteristic Curves in Symmetric Second Order Tensor Fields
Found in: IEEE Transactions on Visualization and Computer Graphics
By Marcel Hlawatsch, Joachim E. Vollrath, Filip Sadlo, Daniel Weiskopf
Issue Date:June 2011
pp. 781-794
This paper generalizes the concept of Lagrangian coherent structures, which is known for its potential to visualize coherent regions in vector fields and to distinguish them from each other. In particular, we extend the concept of the flow map to generic m...
 
Parallel Vectors Criteria for Unsteady Flow Vortices
Found in: IEEE Transactions on Visualization and Computer Graphics
By Raphael Fuchs, Ronald Peikert, Helwig Hauser, Filip Sadlo, Philipp Muigg
Issue Date:May 2008
pp. 615-626
Feature-based flow visualization is naturally dependent on feature extraction. To extract flow features, often higher-order properties of the flow data are used such as the Jacobian or curvature properties, implicitly describing the flow features in terms ...
 
Illuminated Lines Revisited
Found in: Visualization Conference, IEEE
By Ovidio Mallo, Ronald Peikert, Christian Sigg, Filip Sadlo
Issue Date:October 2005
pp. 3
For the rendering of vector and tensor fields, several texturebased volumetric rendering methods were presented in recent years. While they have indisputable merits, the classical vertex-based rendering of integral curves has the advantage of better zoomin...
 
Vorticity Based Flow Analysis and Visualization for Pelton Turbine Design Optimization
Found in: Visualization Conference, IEEE
By Filip Sadlo, Ronald Peikert, Etienne Parkinson
Issue Date:October 2004
pp. 179-186
<p>Vorticity is the quantity used to describe the creation, transformation and extinction of vortices. It is present not only in vortices but also in shear flow. Especially in ducted flows, most of the overall vorticity is usually contained in the bo...
 
Interactive Progressive Visualization with Space-Time Error Control
Found in: IEEE Transactions on Visualization and Computer Graphics
By Steffen Frey,Filip Sadlo,Kwan-Liu Ma,Thomas Ertl
Issue Date:February 2015
pp. 1
We present a novel scheme for progressive rendering in interactive visualization. Static settings with respect to a certain image quality or frame rate are inherently incapable of delivering both high frame rates for rapid changes and high image quality fo...
 
Low-Pass Filtered Volumetric Shadows
Found in: IEEE Transactions on Visualization and Computer Graphics
By Marco Ament,Filip Sadlo,Carsten Dachsbacher,Daniel Weiskopf
Issue Date:February 2015
pp. 1
We present a novel and efficient method to compute volumetric soft shadows for interactive direct volume visualization to improve the perception of spatial depth. By direct control of the softness of volumetric shadows, disturbing visual patterns due to ha...
 
Ambient Volume Scattering
Found in: IEEE Transactions on Visualization and Computer Graphics
By Marco Ament,Filip Sadlo,Daniel Weiskopf
Issue Date:December 2013
pp. 2936-2945
We present ambient scattering as a preintegration method for scattering on mesoscopic scales in direct volume rendering. Far-range scattering effects usually provide negligible contributions to a given location due to the exponential attenuation with incre...
 
Topologically relevant stream surfaces for flow visualization
Found in: Proceedings of the 2009 Spring Conference on Computer Graphics (SCCG '09)
By Filip Sadlo, Ronald Peikert
Issue Date:April 2009
pp. 35-42
When vector field topology is used for the visualization of a 3D vector field, various types of topological features have uniquely defined stream surfaces associated with them. Compared to arbitrary stream surfaces, such topology-induced stream surfaces ar...
     
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