Navigation

Prof. Dr.-Ing. Tobias Günther

Department of Computer Science
Chair of Computer Science 9 (Computer Graphics)

Room: Room 01.115-128
Cauerstraße 11
91058 Erlangen

Bio
Since 2020, I am a professor of visual computing at the Friedrich-Alexander University of Erlangen-Nuremberg. Before, I was a postdoctoral researcher in the Computer Graphics Laboratory (CGL) at ETH Zurich, where I worked in the group of Prof. Markus Gross. In 2016, I received my Dr.-Ing. (Ph.D.) in the Visual Computing Group at the Otto-von-Guericke University of Magdeburg, advised by Prof. Holger Theisel.

Are you excited about graphics, machine learning and science? We have an open PhD position on machine learning in visualization and differentiable visualization. Contact tobias.guenther@fau.de for more information.

Eurovis 2021
The 23rd EG Conference on Visualization takes place in Zurich from 14-18 June 2021 and is organized by Prof. Renato Pajarola (University of Zurich) and Prof. Tobias Günther (FAU). Find out more at eurovis.org

 

 Jakob Jakob’s paper “A Fluid Flow Data Set for Machine Learning and its Application to Neural Flow Map Interpolation” was accepted at IEEE Visualization!

 Marco Ancona’s TVCG paper “MineTime Insight: Visualizing Meeting Habits to Promote Informed Scheduling Decisions” will be presented at IEEE Visualization!

 Ramon Witschi’s short paper “Implicit Ray Casting of the Parallel Vectors Operator” was accepted at IEEE Visualization!

 Marzieh Berenjkoub’s short paper “Vortex Boundary Identification using Convolutional Neural Network” was accepted at IEEE Visualization!

Feature Extraction in Unsteady Flows
Our research is dedicated to novel extraction and rendering techniques for the visualization of features in unsteady flows. For this, we apply techniques from light transport in heterogeneous participating media to the unbiased rendering of features in Lagrangian scalar fields. An example in atmospheric flows are the ridges of the finite-time Lyapunov exponent (FTLE), which constrain the advection of trace gases, guide temperature diffusion, and cloud formation.

Inertial Particle Dynamics
Recent research in flow visualization focused on the analysis of massless particles. However, in many application scenarios, the mass of particles and their resulting inertia are essential, for instance when sand particles interact with aircraft. The governing ordinary differential equation of even simple inertial flow models is up to seven dimensional, which makes feature extraction a challenging task. We extract and visualize integral geometry, study the vortical motion and separation behavior of inertial particles, and extend traditional vector field topology to the inertial case.

Optimal Reference Frames for Vortex Extraction
Vortex extraction is among the most challenging tasks of vector field analysis. We investigate elegant optimization-based approaches that extract vortices in an optimal near-steady reference frame. Vortex measures thereby become invariant under initial rotations and translations of the observer, i.e., they become objective.

Visibility Optimization
When it comes to 3D flow visualization, we often encounter occlusion problems when displaying dense sets of points, lines or multiple surfaces. A vital aspect is the careful selection of the primitives that best communicate the relevant features in a data set. We investigate optimization-based approaches that adjust the opacity of points, lines and surfaces to strive for a balance between the presentation of relevant information and occlusion avoidance.

Rendering
Depending on the degree of realism, the computation of photo-realistic images can take some time. We investigate techniques to accelerate Monte Carlo rendering in order to provide faster feedback and more control for artists. Further, we explore real-time rendering solutions that efficiently mimic natural phenomena, such as interactive material aging simulations.

Code can be found on the GitHub page of the group.
Data set are still hosted on my previous CGL website, but will move here soon.

No publications found.

Jakob Jakob, Markus Gross and Tobias Günther
A Fluid Flow Data Set for Machine Learning and its Application to Neural Flow Map Interpolation
IEEE Transactions on Visualization and Computer Graphics (Proc. IEEE Scientific Visualization), 2020

Ramon Witschi and Tobias Günther
Implicit Ray Casting of the Parallel Vectors Operator
IEEE VIS – Short Papers, 2020

Marzieh Berenjkoub, Guoning Chen and Tobias Günther
Vortex Boundary Identification using Convolutional Neural Network
IEEE VIS – Short Papers, 2020

Nemanja Bartolovic, Markus Gross and Tobias Günther
Phase Space Projection of Dynamical Systems
Computer Graphics Forum (Proc. EuroVis), 2020

Xingze Tian and Tobias Günther
Progressive Rendering of Transparent Integral Surfaces
EuroVis – Short Papers, 2020

Nikola Kovacevic, Rafael Wampfler, Barbara Solenthaler, Markus Gross and Tobias Günther
Glyph-Based Visualization of Affective States
EuroVis – Short Papers, 2020

Irene Baeza Rojo, Markus Gross and Tobias Günther
Controllable Caustic Animation Using Vector Fields
Eurographics – Short Papers, 2020

Akos Horvath, Wayne Bresky, Jaime Daniels, Jur Vogelzang, Ad Stoffelen, James Carr, Dong L. Wu, Chellappan Seethala, Tobias Günther and Stefan Alexander Buehler
Evolution of an Atmospheric Kármán Vortex Street from High-Resolution Satellite Winds: Guadalupe Island Case Study
Journal of Geophysical Research: Atmospheres, 2020

Tobias Günther
Visibility, Topology, and Inertia: New Methods in Flow Visualization
Computer Graphics and Applications, 2020

Marco Ancona, Marilou Beyeler, Markus Gross and Tobias Günther
MineTime Insight: Visualizing Meeting Habits to Promote Informed Scheduling Decisions
IEEE Transactions on Visualization and Computer Graphics, 2020

Irene Baeza Rojo and Tobias Günther
Vector Field Topology of Time-Dependent Flows in a Steady Reference Frame
IEEE Transactions on Visualization and Computer Graphics (Proc. IEEE Scientific Visualization), 2020

Irene Baeza Rojo, Markus Gross and Tobias Günther
Accelerated Monte Carlo Rendering of Finite-Time Lyapunov Exponents
IEEE Transactions on Visualization and Computer Graphics (Proc. IEEE Scientific Visualization), 2020

Robin Bader, Michael Sprenger, Nikolina Ban, Stefan Rüdisühli, Christoph Schär and Tobias Günther
Extraction and Visual Analysis of Potential Vorticity Banners around the Alps
IEEE Transactions on Visualization and Computer Graphics (Proc. IEEE Scientific Visualization), 2020

Irene Baeza Rojo, Markus Gross and Tobias Günther
Fourier Opacity Optimization for Scalable Exploration
IEEE Transactions on Visualization and Computer Graphics, 2019

Lea Fritschi, Irene Baeza Rojo and Tobias Günther
Visualizing the Temporal Evolution of the Universe from Cosmology Simulations
IEEE Scientific Visualization Contest, 2019

Byungsoo Kim and Tobias Günther
Robust Reference Frame Extraction from Unsteady 2D Vector Fields with Convolutional Neural Networks
Computer Graphics Forum (Proc. EuroVis), 2019

Roxana Bujack, Soumya Dutta, Duan Zhang and Tobias Günther
Objective Finite-Time Flow Topology from Flowmap Expansion and Contraction
TopoInVis, 2019

Xingze Tian and Tobias Günther
Simulation and Visualization of Fluid Flows Around Real Objects in Augmented Reality
EuroVis – Short Papers, 2019

Roxana Bujack, Soumya Dutta, Irene Baeza Rojo, Duan Zhang and Tobias Günther
Objective Finite-Time Saddles and their Connection to FTLE
EuroVis – Short Papers, 2019

Raphael Imahorn, Irene Baeza Rojo and Tobias Günther
Visualization and Analysis of Deep Water Asteroid Impacts
IEEE Scientific Visualization Contest, 2018

Tobias Günther and Holger Theisel
Hyper-Objective Vortices
IEEE Transactions on Visualization and Computer Graphics, 2020

Riccardo Roveri, Dirk Joachim Lehmann, Markus Gross and Tobias Günther
Correlated Point Sampling for Geospatial Scalar Field Visualization
Vision, Modeling and Visualization, 2018

Jérôme Holbein and Tobias Günther
Parameter Space Comparison of Inertial Particle Models
Vision, Modeling and Visualization, 2018

Tobias Günther and Holger Theisel
Objective Vortex Corelines of Finite-sized Objects in Fluid Flows
IEEE Transactions on Visualization and Computer Graphics (Proc. IEEE Scientific Visualization), 2019

Monique Meuschke, Tobias Günther, Philipp Berg, Ralph Wickenhoefer, Bernhard Preim and Kai Lawonn
Visual Analysis of Aneurysm Data using Statistical Graphics
IEEE Transactions on Visualization and Computer Graphics (Proc. IEEE Scientific Visualization), 2019

Kai Lawonn and Tobias Günther
Stylized Image Triangulation
Computer Graphics Forum, 2019

Irene Baeza Rojo, Markus Gross and Tobias Günther
Visualizing the Phase Space of Heterogeneous Inertial Particles in 2D Flows
Computer Graphics Forum (Proc. EuroVis), 2018

Tobias Günther and Holger Theisel
The State of the Art in Vortex Extraction
Computer Graphics Forum, 2018

Isabelle Roesch and Tobias Günther
Visualization of Neural Network Predictions for Weather Forecasting
Computer Graphics Forum, 2019

Noël Rimensberger, Markus Gross and Tobias Günther
Visualization of Clouds and Atmospheric Air Flows
Computer Graphics and Applications, 2019

Monique Meuschke, Tobias Günther, Ralph Wickenhöfer, Markus Gross, Bernhard Preim and Kai Lawonn
Management of Cerebral Aneurysm Descriptors based on an Automatic Ostium Extraction
Computer Graphics and Applications, 2018

Noël Rimensberger, Markus Gross and Tobias Günther
Visualization of Clouds and Atmospheric Air Flows
IEEE Scientific Visualization Contest, 2017

Tobias Günther, Alexander Kuhn, Hans-Christian Hege, Markus Gross and Holger Theisel
Progressive Monte Carlo Rendering of Atmospheric Flow Features Across Scales
Physical Review Fluids, 2017

Tobias Günther, Markus Gross and Holger Theisel
Generic Objective Vortices for Flow Visualization
ACM Transactions on Graphics (Proc. SIGGRAPH), 2017

Tobias Günther and Markus Gross
Flow-Induced Inertial Steady Vector Field Topology
Computer Graphics Forum (Proc. Eurographics), 2017

Tobias Günther, Holger Theisel and Markus Gross
Decoupled Opacity Optimization for Points, Lines and Surfaces
Computer Graphics Forum (Proc. Eurographics), 2017

Isabelle Roesch and Tobias Günther
Visualization of Neural Network Predictions for Weather Forecasting
Vision, Modeling and Visualization, 2017

Anke Friederici, Tobias Günther, Christian Rössl and Holger Theisel
Finite Time Steady Vector Field Topology – Theoretical Foundation and 3D Case
Vision, Modeling and Visualization, 2017

Tobias Günther, Alexander Kuhn, Hans-Christian Hege, Markus Gross and Holger Theisel
Progressive Monte Carlo Rendering of Atmospheric Flow Features Across Scales
Gallery of Fluid Motion (APS Division of Fluid Dynamics), 2016

Tobias Günther
Opacity Optimization and Inertial Particles in Flow Visualization
PhD Thesis, 2016

Tobias Günther and Holger Theisel
Backward Finite-Time Lyapunov Exponents in Inertial Flows
IEEE Transactions on Visualization and Computer Graphics (Proc. IEEE Scientific Visualization), 2017

Tobias Günther and Holger Theisel
Singularities of the Inertial Flow Map Gradient
Vision, Modeling and Visualization, 2016

Tobias Günther and Holger Theisel
Source Inversion by Forward Integration in Inertial Flows
Computer Graphics Forum (Proc. EuroVis), 2016

Tobias Günther, Alexander Kuhn and Holger Theisel
MCFTLE: Monte Carlo Rendering of Finite-Time Lyapunov Exponent Fields
Computer Graphics Forum (Proc. EuroVis), 2016

Tobias Günther, Kai Rohmer, Christian Rössl, Thorsten Grosch and Holger Theisel
Stylized Caustics: Progressive Rendering of Animated Caustics
Computer Graphics Forum (Proc. Eurographics), 2016

Tobias Günther and Holger Theisel
Inertial Steady 2D Vector Field Topology
Computer Graphics Forum (Proc. Eurographics), 2016

Tobias Günther, Maik Schulze, Anke Friederici and Holger Theisel
Visualizing Volcanic Clouds in the Atmosphere and their Impact on Air Traffic
Computer Graphics and Applications, 2016

Tobias Günther, Maik Schulze and Holger Theisel
Rotation Invariant Vortices for Flow Visualization
IEEE Transactions on Visualization and Computer Graphics (Proc. IEEE Scientific Visualization), 2016

Tobias Günther and Thorsten Grosch
Consistent Scene Editing by Progressive Difference Images
Computer Graphics Forum (Proc. Eurographics Symposium on Rendering), 2015

Andreas Reich, Tobias Günther and Thorsten Grosch
Illumination-driven Mesh Reduction for Accelerating Light Transport Simulations
Computer Graphics Forum (Proc. Eurographics Symposium on Rendering), 2015

Tobias Günther and Holger Theisel
Finite-Time Mass Separation for Comparative Visualizations of Inertial Particles
Computer Graphics Forum (Proc. EuroVis), 2015

Tobias Günther, Maik Schulze, Anke Friederici and Holger Theisel
Visualizing the Aftermath of Volcanic Eruptions
IEEE Scientific Visualization Contest, 2014

Tobias Günther and Holger Theisel
Vortex Cores of Inertial Particles
IEEE Transactions on Visualization and Computer Graphics (Proc. IEEE Scientific Visualization), 2014

Tobias Günther, Maik Schulze, Janick Martinez Esturo, Christian Rössl and Holger Theisel
Opacity Optimization for Surfaces
Computer Graphics Forum (Proc. EuroVis), 2014

Maik Schulze, Janick Martinez Esturo, Tobias Günther, Christian Rössl, Hans-Peter Seidel, Tino Weinkauf and Holger Theisel
Sets of Globally Optimal Stream Surfaces for Flow Visualization
Computer Graphics Forum (Proc. EuroVis), 2014

Tobias Günther and Thorsten Grosch
Distributed Out-of-Core Stochastic Progressive Photon Mapping
Computer Graphics Forum, 2014

Tobias Günther, Christian Rössl and Holger Theisel
Hierarchical Opacity Optimization for Sets of 3D Line Fields
Computer Graphics Forum (Proc. Eurographics), 2014

Benjamin M. Kutz, Tobias Günther, Andreas Rumpf and Alexander Kuhn
Numerical Examination of a Model Rotor in Brownout Conditions
Annual Forum and Technology Display of American Helicopter Society, 2014

Tobias Günther, Kai Rohmer and Thorsten Grosch
Particle-based Simulation of Material Aging
GPU Pro 5: Advanced Rendering Techniques, 2014

Kai Lawonn, Tobias Günther and Bernhard Preim
Coherent View-Dependent Streamlines for Understanding Blood Flow
EuroVis – Short Papers, 2014

Tobias Günther, Christian Rössl and Holger Theisel
Opacity Optimization for 3D Line Fields
ACM Transactions on Graphics (Proc. SIGGRAPH), 2013

Tobias Günther, Alexander Kuhn, Benjamin Kutz and Holger Theisel
Mass-Dependent Integral Curves in Unsteady Vector Fields
Computer Graphics Forum (Proc. EuroVis), 2013

Alexander Kuhn, Norbert Lindow, Tobias Günther, Alexander Wiebel, Holger Theisel and Hans-Christian Hege
Trajectory Density Projection for Vector Field Visualization
EuroVis – Short Papers, 2013

Tobias Günther, Kai Rohmer and Thorsten Grosch
GPU-accelerated Interactive Material Aging
Vision, Modeling and Visualization, 2012

Tobias Günther, Kai Bürger, Rüdiger Westermann and Holger Theisel
A View-Dependent and Inter-Frame Coherent Visualization of Integral Lines using Screen Contribution
Vision, Modeling and Visualization, 2011