Prof. Chris Wojtan, Ph.D.

Bio

Highlights

• We received an ERC Consolidator Grant in 2022!
• We received an ERC Starting Grant in 2014!
• Chris received the SIGGRAPH Significant New Researcher Award in 2016!
• Chris received the Eurographics Young Researcher Award in 2015!
• Morten won the Eurographics Annual Award for Best PhD Thesis in 2017!
• Ryoichi's paper won the Eurographics best paper award in 2015!

Join us!

We are hiring new PhD students and Post-Docs.

• Post-docs: If you are interested in becoming a post-doc researcher in our group,
  please email me directly (wojtan at ist.ac.at).
• Ph.D. students: All information pertaining to joining my group as a Ph.D. student can be found on the IST Austria graduate school website. If you email me directly asking for a Ph.D. position, you will probably not receive a response.
• Interns: I hire summer interns through the ISTernship program organized by IST Austria. My group does not typically offer internships outside of the summer ISTern program. If you email me directly asking for an internship, you will probably not receive a response.
• Lastly, all research is performed in English.

The Future of Physics Simulation

We develop geometric and numerical algorithms for computer animation and geometry processing. We try to find new efficient and robust ways to simulate solid and fluid dynamics, control physics simulations, and compute with 3D shapes. Check out some of our papers and vides below!

For more information, please visit Visual Computing @ IST Austria.

Publications

Coupling 3D Liquid Simulation with 2D Wave Propagation for Large ScaleWater Surface Animation Using the Equivalent Sources Method,
Camille Schreck, Chris Wojtan
Computer Graphics Forum (Eurographics 2022).

Mechanics-Aware Deformation of Yarn Pattern Geometry,
Georg Sperl, Rahul Narain, Chris Wojtan
ACM Transactions on Graphics (SIGGRAPH 2021).

Making Procedural Water Waves Boundary-Aware,
Stefan Jeschke, Christian Hafner, Nuttapong Chentanez, Miles Macklin, Matthias Muller-Fischer, Chris Wojtan
ACM SIGGRAPH/Eurographics Symposium on Computer Animation 2020 (SCA 2020).

Homogenized Yarn-Level Cloth,
Georg Sperl, Rahul Narain, Chris Wojtan
ACM Transactions on Graphics (SIGGRAPH 2020).

A Model for Soap Film Dynamics with Evolving Thickness,
Sadashige Ishida*, Peter Synak*, Fumiya Narita, Toshiya Hachisuka, Chris Wojtan (*joint first authors in alphabetical order)
ACM Transactions on Graphics (SIGGRAPH 2020).

Wave Curves: Simulating Lagrangian water waves on dynamically deforming surfaces,
Tomas Skrivan, Andreas Soderstrom, John Johansson, Christoph Sprenger, Ken Museth, Chris Wojtan
ACM Transactions on Graphics (SIGGRAPH 2020).

A Practical Method for Animating Anisotropic Elastoplastic Materials,
Camille Schreck and Chris Wojtan
Computer Graphics Forum (Eurographics 2020).

Fundamental Solutions for Water Wave Animation,
Camille Schreck, Christian Hafner, Chris Wojtan
ACM Transactions on Graphics (SIGGRAPH 2019).

Simulating Liquids on Dynamically Warping Grids,
Hikaru Ibayashi, Chris Wojtan, Nils Thuerey, Takeo Igarashi, Ryoichi Ando
IEEE Transactions on Visualization and Computer Graphics (TVCG 2018).

Water Surface Wavelets,
Stefan Jeschke, Tomas Skrivan, Matthias Muller-Fischer, Nuttapong Chentanez, Miles Macklin, and Chris Wojtan
ACM Transactions on Graphics (SIGGRAPH 2018).

Extended Narrow Band FLIP for Liquid Simulations,
Takahiro Sato, Chris Wojtan, Nils Thuerey, Takeo Igarashi, and Ryoichi Ando
Computer Graphics Forum (Eurographics 2018).

Water Wave Packets,
Stefan Jeschke and Chris Wojtan
ACM Transactions on Graphics (SIGGRAPH 2017).

Adaptive Physically Based Models in Computer Graphics,
Pierre-Luc Manteaux, Chris Wojtan, Rahul Narain, Stephane Redon, Francois Faure, Marie-Paule Cani
Computer Graphics Forum (Eurographics 2017 State of the Art Report).

Space-time sculpting of liquid animation,
Pierre-Luc Manteaux, Ulysse Vimont, Chris Wojtan, Damien Rohmer, Marie-Paule Cani
Motion In Games 2016 (MIG 2016).

Generalized Non-Reflecting Boundaries for Fluid Re-Simulation,
M. Bojsen-Hansen and C. Wojtan
ACM Transactions on Graphics (SIGGRAPH 2016).

Surface-Only Liquids,
F. Da, D. Hahn, C. Batty, C. Wojtan, and E. Grinspun
ACM Transactions on Graphics (SIGGRAPH 2016).

Fast Approximations for Boundary Element Based Brittle Fracture Simulation,
D. Hahn and C. Wojtan
ACM Transactions on Graphics (SIGGRAPH 2016).

Narrow Band FLIP for Liquid Simulations,
F. Ferstl, R. Ando, C. Wojtan, R. Westermann, and N. Thuerey
Computer Graphics Forum (Eurographics 2016).

A Practical Method for High-Resolution Embedded Liquid Surfaces,
R. Goldade, C. Batty, and C. Wojtan
Computer Graphics Forum (Eurographics 2016).

High-Resolution Brittle Fracture Simulation with Boundary Elements,
D. Hahn and C. Wojtan
ACM Transactions on Graphics (SIGGRAPH 2015).

A Stream Function Solver for Liquid Simulations,
R. Ando, N. Thuerey, and C. Wojtan
ACM Transactions on Graphics (SIGGRAPH 2015).

Double Bubbles Sans Toil and Trouble: Discrete Circulation-Preserving Vortex Sheets for Soap Films and Foams,
F. Da, C. Batty, C. Wojtan, and E. Grinspun
ACM Transactions on Graphics (SIGGRAPH 2015).

Water Wave Animation via Wavefront Parameter Interpolation,
S. Jeschke and C. Wojtan
ACM Transactions on Graphics (presented at SIGGRAPH 2015).

A Dimension-reduced Pressure Solver for Liquid Simulations,
R. Ando, N. Thuerey, and C. Wojtan
Computer Graphics Forum (Eurographics 2015).
Best Paper Award

A General Framework for Bilateral and Mean Shift Filtering,
J. Solomon, K. Crane, A. Butscher, and C. Wojtan
ArXiv: 1405.4734.

Blending Liquids,
K. Raveendran, C. Wojtan, N. Thuerey, and G. Turk
ACM Transactions on Graphics (SIGGRAPH 2014).

Liquid Surface Tracking with Error Compensation,
M. Bojsen-Hansen and C. Wojtan,
ACM Transactions on Graphics (SIGGRAPH 2013).

Putting Holes in Holey Geometry: Topology Change for Arbitrary Surfaces,
G. Bernstein and C. Wojtan,
ACM Transactions on Graphics (SIGGRAPH 2013).

Highly Adaptive Liquid Simulations on Tetrahedral Meshes,
R. Ando, N. Thuerey, and C. Wojtan,
ACM Transactions on Graphics (SIGGRAPH 2013).

Tracking Surfaces with Evolving Topology,
M. Bojsen-Hansen, H. Li, C. Wojtan,
ACM Transactions on Graphics (SIGGRAPH 2012).

Controlling Liquids Using Meshes,
K. Raveendran, N. Thuerey, C. Wojtan, G. Turk,
ACM SIGGRAPH/Eurographics Symposium on Computer Animation 2012 (SCA 2012).

Explicit Mesh Surfaces for Particle Based Fluids,
J. Yu, C. Wojtan, G. Turk, and C. Yap,
Eurographics 2012.

Liquid Simulation with Mesh-based Surface Tracking,
Presented by C. Wojtan, M. Müller-Fischer, and T. Brochu
SIGGRAPH 2011 Course.

Hybrid Smoothed Particle Hydrodynamics,
K. Raveendran, C. Wojtan, G. Turk,
ACM SIGGRAPH/Eurographics Symposium on Computer Animation 2011 (SCA 2011).

Physics-Inspired Topology Changes for Thin Fluid Features,
C. Wojtan, N. Thuerey, M.Gross, and G. Turk,
ACM Transactions on Graphics (SIGGRAPH 2010).

A Multiscale Approach to Mesh-based Surface Tension Flows,
N. Thuerey, C. Wojtan, M.Gross, and G. Turk,
ACM Transactions on Graphics (SIGGRAPH 2010).

Fluid Simulation with Articulated Bodies,
N. Kwatra, C. Wojtan, M. Carlson, I. Essa, P. J. Mucha, G. Turk,
IEEE Transactions on Visualization and Computer Graphics (TVCG 2010).

Deforming Meshes that Split and Merge,
C. Wojtan, N. Thuerey, M.Gross, and G. Turk,
ACM Transactions on Graphics (SIGGRAPH 2009).

Fast Viscoelastic Behavior with Thin Features,
C. Wojtan and G. Turk,
ACM Transactions on Graphics (SIGGRAPH 2008).

A Finite Element Method for Animating Large Viscoplastic Flow,
A. W. Bargteil, C. Wojtan, J. K. Hodgins, and G. Turk,
ACM Transactions on Graphics (SIGGRAPH 2007), August 2007, Vol 26. No. 3.

Animating Corrosion and Erosion,
C. Wojtan, M. Carlson, P. J. Mucha, and G. Turk,
Eurographics Workshop on Natural Phenomena, (2007).

Keyframe Control of Complex Particle Systems Using the Adjoint Method,
C. Wojtan, P. J. Mucha, and G. Turk,
ACM SIGGRAPH/Eurographics Symposium on Computer Animation, 15-23 (2006).

Controllable Motion Synthesis in a Gaseous Medium,
L. Shi, Y. Yu, C. Wojtan, and S. Chenney,
The Visual Computer, August 2005, Vol. 21, No. 7, pp.474-487.

PhD Thesis

Animating Physical Phenomena
with Embedded Surface Meshes,
PhD Thesis, Georgia Institute of Technology, 2010.

Current Research Group

Georg Sperl
Ph.D. Student

Peter Synak
Ph.D. Student

Sadashige Ishida
Ph.D. Student

Yi-Lu Chen
Ph.D. Student

Mickaël Ly
Post-Doc

Huidong Yang
Post-Doc

Former Research Group Members

Morten Bojsen-Hansen
Former Ph.D. Student
Graduated 2017
Received the Eurographics Annual Award for Best PhD Thesis in 2017.
Autodesk Research

David Hahn
Former Ph.D. Student
Graduated 2018
Post-doc, TU Wien

Tomas Skrivan
Former Ph.D. Student
SideFX Software

Stefan Jeschke
Former Post-doctoral researcher
NVIDIA Research

Ryoichi Ando
Former Post-doctoral researcher
Assistant Professor, National Institute of Informatics (NII), Tokyo, Japan

Patrick Blies
Former Post-doctoral researcher
EnliteAI GmbH

Ewa Gajda-Zagórska
Former Post-doctoral researcher
Research & Analytics, HSBC

Camille Schreck
Former Post-doctoral researcher
Inria Starting Faculty Position, Inria Nancy

Funding

Big Splash: Efficient Simulation of Natural Phenomena at Extremely Large Scales
ERC Starting grant 638176
Principal Investigator: Chris Wojtan
2015-2020

Deep Pictures: Visuelle und Haptische Vektor-Bilder
FWF individual project P 24352
Principal Investigator: Stefan Jeschke (post-doc in Wojtan group at IST Austria)
2012-2015

JSPS Research Fellowship for Research Abroad

Principal Investigator: Ryoichi Ando (visiting researcher in Wojtan group at IST Austria)
2014-2016

NSF Graduate Research Fellowship

Principal Investigator: Chris Wojtan
2005-2008