Eftychios Sifakis
Post-Doctoral Scholar
UCLA Departments of Mathematics & Computer Science
Contact Information:
UCLA Department of Mathematics
420 Portola Plaza
Math Sciences Bldg, Room MS-7310
Los Angeles, CA 90095
Email : eftychios.sifakis@gmail.com
Professional information
I am a post-doctoral researcher at the University of California Los Angeles, jointly appointed to the departments of Mathematics and Computer Science. I completed my PhD degree in Computer Science at Stanford University, under the supervision of Ron Fedkiw. Before moving to the United States, I completed a B.Sc in Computer Science (2000) and a B.Sc in Mathematics (2002), both from the University of Crete, Greece.
My current research revolves around the areas of computer graphics, physics-based modeling/simulation and scientific computing. I am particularly interested in the development of algorithms and numerical techniques that can facilitate the efficient and accurate simulation of parts of the human body, with focus on applications in biomechanics and virtual surgery.
Biographical sketch
Curriculum Vitae
Project descriptions (with illustrations and videos)
Teaching
Math 151B - Applied Numerical Methods (Winter 2009-2010)
Publications
- Y. Zhu, E. Sifakis, J. Teran and A. Brandt, “An efficient multigrid method for the simulation of high-resolution elastic solids”, accepted for publication in ACM Transactions on Graphics 2010 (to be presented at SIGGRAPH 2010) [PDF]
- S.-H. Lee, E. Sifakis and D. Terzopoulos, “Comprehensive Biomechanical Modeling and Simulation of the Upper Body”, ACM Transactions on Graphics 28(4), 2009 (to be presented at SIGGRAPH 2010) [PDF]
- A. McAdams, A. Selle, K. Ward, E. Sifakis and J. Teran, “Detail preserving continuum simulation of straight hair”, ACM Transactions on Graphics (SIGGRAPH Proceedings), 28(3), 2009 [PDF]
- J. Hellrung, A. Selle, A. Shek, E. Sifakis and J. Teran, “Geometric fracture modeling in BOLT, ACM SIGGRAPH Talks (Sketch), 2009 [PDF]
- E. Sifakis, J. Hellrung, J. Teran, A. Oliker and C. Cutting, “ Local Flaps: A Real-Time Finite Element Based Solution to the Plastic Surgery Defect Puzzle”, Medicine Meets Virtual Reality 17, 2009 [PDF]
- E. Sifakis, S. Marino and J. Teran, “Globally Coupled Impulse-Based Collision Handling for Cloth Simulation”, ACM SIGGRAPH/Eurographics Symposium on Computer Animation (SCA), edited by M. Gross and D. James, 2008 [PDF]
- E. Sifakis, T. Shinar, G. Irving and R. Fedkiw, “Hybrid Simulation of Deformable Solids”, ACM SIGGRAPH/Eurographics Symposium on Computer Animation (SCA), edited by D. Metaxas and J. Popovic, 2007 [PDF]
- E. Sifakis, K. Der, and R. Fedkiw, “Arbitrary Cutting of Deformable Tetrahedralized Objects”, ACM SIGGRAPH/Eurographics Symposium on Computer Animation (SCA), edited by D. Metaxas and J. Popovic, 2007 [PDF]
- C. Hughes, R. Grzeszczuk, E. Sifakis, D. Kim, S. Kumar, A. Selle, J. Chhugani, M. Holliman, Y.-K. Chen, “Physical Simulation for Animation and Visual Effects: Parallelization and Characterization for Chip Multiprocessors”, IEEE/ACM International Symposium on Computer Architecture (ISCA), 2007 [PDF]
- E. Sifakis, “Algorithmic Aspects of the Simulation and Control of Computer Generated Human Anatomy Models”, Ph.D. Thesis, Stanford University, 2007 [PDF]
- E. Sifakis, A. Selle, A. Robinson-Mosher and R. Fedkiw, “Simulating Speech with a Physics-Based Facial Muscle Model”, ACM SIGGRAPH/Eurographics Symposium on Computer Animation (SCA), edited by M.-P. Cani and J. O’Brien, 2006 [PDF]
- E. Sifakis, I. Neverov and R. Fedkiw, “Automatic Determination of Facial Muscle Activations from Sparse Motion Capture Marker Data”, ACM Transactions on Graphics (SIGGRAPH Proceedings), TOG 24, pp. 417-425, 2005 [PDF]
- J. Teran, E. Sifakis, G. Irving and R. Fedkiw, “Robust Quasistatic Finite Elements and Flesh Simulation”, ACM/Eurographics Symposium on Computer Animation (SCA), edited by K. Anjyo and P. Faloutsos, pp. 181-190, 2005 [PDF]
- J. Teran, E. Sifakis, S. Blemker, V. Ng Thow Hing, C. Lau and R. Fedkiw, “Creating and simulating skeletal muscle from the Visible Human Data Set”, IEEE Transactions on Visualization and Computer Graphics, 11, pp. 317-328, 2005. [PDF]
- E. Sifakis and R. Fedkiw, “Facial Muscle Activations from Motion Capture”, in video proceedings of the Computer Vision and Pattern Recognition Conference (CVPR), 2005 [PDF]
- S. Blemker, J. Teran, E. Sifakis, R. Fedkiw and S. Delp, “Fast 3D Muscle Simulations Using a New Quasistatic Invertible Finite-Element Algorithm”, International Symposium on Computer Simulation in Biomechanics, 2005 [PDF]
- P. Sundaram, E. Sifakis , D. S. Paik, C. F. Beaulieu, S. Napel, “Fold Removal in CT Colonography (CTC): A Physics-based Approach”, Radiological Society of North America 91st Scientific Sessions, November, 2005. Scientific Assembly and Annual Meeting Program 2005:439
- P. Sundaram, D.S. Paik, E.D. Sifakis, C.F. Beaulieu and S. Napel, “Selective Fold Removal in CT colonography using physically-based simulation,” Fifth International Symposium on Virtual Colonoscopy, Boston, MA October 28-29, 2004
- P. Sundaram, E. Sifakis, D.S. Paik, C.F. Beaulieu, S. Napel, “Physically based approach to removal of folds in CT Colonography: Proof of concept”, Radiological Society of North America 90th Scientific Sessions, November 2004.
- S. Liapis, E. Sifakis and G. Tziritas, “Color and texture segmentation using wavelet frame analysis, deterministic relaxation and fast marching algorithms”, Journal of Visual Communication and Image Representation, 15:1, pp. 1-26, March 2004. [PDF]
- E. Sifakis and G. Tziritas, “Robust object boundary determination using a locally adaptive level set algorithm”, Intl. Conference on Image Processing, 2003 [PDF]
- E. Sifakis and G. Tziritas, “Fast Marching techniques for Visual Grouping”, in Geometric Level Set Methods in Imaging, Vision and Graphics, by S. Osher and N. Paragios (eds), Springer Verlag, July 2003
- E. Sifakis, C. Garcia and G. Tziritas, “Bayesian level sets for image segmentation”, Journal of Visual Communication and Image Representation, 13:1-2, pp. 44-64, March 2002 [PDF]
- E. Sifakis, I. Grinias and G. Tziritas, “Video segmentation using fast marching and region growing algorithms”, EURASIP Journal on Applied Signal Processing, pp. 379-388, Apr 2002 [PDF]
- E. Sifakis and G. Tziritas, “Moving object localization using a multi-label fast marching algorithm”, Signal Processing: Image Communication, 16:10, pp. 963-976, 2001 [PDF]
- E. Sifakis, I. Grinias and G. Tziritas, “Video segmentation using fast marching and region growing algorithms”, 3rd European Workshop on Image Analysis for Multimedia Interactive Services, 2001 (invited) [PDF]
- S. Liapis, E. Sifakis and G. Tziritas, “Color and/or texture segmentation using deterministic relaxation and fast marching algorithms”, Intl. Conference on Pattern Recognition, 2000 [PDF]
- E. Sifakis and G. Tziritas, “Fast marching to moving object location”, Intl. Conference on Scale-Space Theories in Computer Vision, 1999 [PDF]
Personal information
My wife, Demetra Makris Sifakis, is a dentist at the St. Johns Well Child and Family Center. She is also affiliated with the UCLA community, as visiting clinical faculty for the UCLA School of Dentistry.
