Jonas Spillmann, Computer Vision Laboratory, ETH Zurich


	Dr. Jonas Spillmann Computer Vision Laboratory ETF D-117 Sternwartstrasse 7 8092 Zürich Switzerland Tel: +41 (0)44 632 57 69 jonas.spillmann@vision.ee.ethz.ch Personal webpage: www.jonasspillmann.ch
	Jonas Spillmann received his PhD degree in Computer Science from University of Freiburg in 2008, where he was a member of Professor Matthias Teschner's research group. Dr. Spillmann is currently a Postdoctoral fellow at Computer Vision Laboratory at the Swiss Federal Institute of Technology, where he is working with Dr. Harders on interactive surgical simulation.


	Research interests: Surgical simulators: In our research group, we are investigating into high-fidelity training simulators for surgical procedures. The focus is on combining novel approaches for deformation simulation and contact handling with state-of-the-art rendering techniques. Elastic rod modeling: Elastic rods are one-dimensional flexible structures that can twist and bend. Due to their inherent non-linear deformations, they are challenging to simulate. In my work, I have proposed novel approaches for deformation modeling and contact handling of elastic rods. Contact handling: Detecting and resolving collisions is an important task in many simulation frameworks. I have proposed efficient approaches for detecting collisions between geometrically deformable objects, and to handle collisions between volumetric and non-volumetric objects.


	Thesis: J. Spillmann, "CORDE: Cosserat Rod Elements for the Animation of Interacting Elastic Rods", Dissertation zur Erlangung des Doktorgrades der Fakultät für Angewandte Wissenschaften der Albert-Ludwigs-Universität Freiburg im Breisgau, 2008. [pdf]


	Publications: B. Fierz, J. Spillmann and M. Harders, "Element-wise Mixed Implicit-Explicit Integration for Stable Dynamic Simulation of Deformable Objects", in ACM SIGGRAPH/Eurographics Symposium on Computer Animation, 2011, to appear B. Fierz, J. Spillmann, I. Aguinaga and M. Harders, M. Harders, "Maintaining large time steps in explicite finite element simulations using shape matching", in IEEE Transactions on Visualization and Computer Graphics, in press, 2011 M. Seiler, D. Steinemann, J. Spillmann and M. Harders, "Robust interactive cutting based on an adaptive octree simulation mesh", in The Visual Computer, 27(6-8), pp. 519-529, 2011 J. Spillmann and M. Harders, M. Harders, "Inextensible Elastic Rods with Torsional Friction based on Lagrange Multipliers", in Computer Animations and Virtual Worlds, 21(6), pp. 561-572, 2010 [movie] M. Seiler, J. Spillmann, M. Harders, "A Threefold Representation for the Adaptive Simulation of Embedded Deformable Objects in Contact", in Journal of WSCG, vol. 18, pp. 89-96, 2010 B. Fierz, J. Spillmann, and M. Harders, "Handling Badly Shaped Elements Using Inhomogeneous Material", in Journal of WSCG, vol. 18, pp. 81-88, 2010 I. Aguinaga, B. Fierz, J. Spillmann, and M. Harders, "Filtering of High Modal Frequencies for Stable Real-Time Explicit Integration of Deformable Objects using the Finite Element Method", in Biophysics and Molecular Biology, vol. 103(2), pp. 225-235, 2010 O. Lazarevych, J. Spillmann, C. Renner, G. Szekely, M. Harders, "Friction Handling for Penalty-Based Methods", in Proc. of VRIPHYS, pp. 135-144, 2009 J. Spillmann, M. Teschner, "Cosserat Nets," in IEEE Transactions on Visualization and Computer Graphics, vol. 15, no. 2, pp. 325-338, 2009. T. Stumpp, J. Spillmann, M. Becker, M. Teschner, "A Geometric Deformation Model for Stable Cloth Simulation", Proc. VRIPHYS, pp. 39-46, 2008 J. Spillmann, M. Teschner, "An Adaptive Contact Model for the Robust Simulation of Knots", Computer Graphics Forum, vol. 27, no. 2 (Proc. Eurographics), pp. 497-506, 2008 J. Spillmann, M. Teschner, "CORDE: Cosserat Rod Elements for the Dynamic Simulation of One-Dimensional Elastic Objects," Proc. ACM SIGGRAPH / Eurographics SCA, pp. 209-217, 2007 J. Spillmann, M. Becker, M. Teschner, "Efficient Updates of Bounding Sphere Hierarchies for Geometrically Deformable Models", in Journal of Visual Communication and Image Representation, vol. 18, no. 2, pp. 101-108, 2007 J. Spillmann, M. Becker, M. Teschner, "Non-iterative Computation of Contact Forces for Deformable Objects", in Journal of WSCG, vol. 15, no. 1-3, 2007 J. Spillmann, M. Wagner, M. Teschner, "Robust Tetrahedral Meshing of Triangle Soups", Proc. Vision, Modeling, Visualization, pp. 9-16, 2006 J. Spillmann, M. Teschner, "Contact Surface Computation for Coarsely Sampled Deformable Objects", Proc. Vision, Modeling, Visualization, pp. 289-296, 2005