James F. O’Brien, UC Berkeley



Distinguished Speaker Series

Speaker: James F. O’Brien
EECS, Computer Science Division, U.C. Berkeley
Topic: Adaptive Simulation with Triangle Meshes
Date: Monday, February 22, 2016
Time: 3:30 p.m.
Place: Rice 130 (auditorium) (Light refreshments after seminar)
Host: Connelly Barnes




Abstract: This talk will discuss the development of finite element simulation methods based on adaptive refinement of triangle meshes. These methods simulating surfaces in 3D dynamically refine and coarsen meshes so that they automatically conform to the geometric and dynamic detail of the simulated phenomena. The adaptation algorithms produce anisotropic meshes that align with features of underlaying physical system allowing efficient modeling of fine-scale oriented structures. By preemptively refining in anticipation of the formation of detailed features, these methods are able to preserve fine-scale dynamic behavior. Applications of these techniques include clothing simulation, fracture propagation, and buckling shells.  Code implementing these algorithms has been publicly released as part of the UC Berkeley ARCSim Project.  The startup company Avametric is using ARCSim for virtual clothing try on and examples from this industrial use will also be discussed.

Bio: James F. O’Brien is a Professor of Computer Science at the University of California, Berkeley and Chief Scientist at Avametric.  His research interests include graphics, computer animation, simulations of physical systems, and the forensic analysis of images and video. He has authored numerous papers on these topics. In addition to his research pursuits, Prof. O’Brien has worked with film and game companies on integrating advanced simulation physics into games and special effects. His methods for destruction modeling have been used in over 90 feature films and AAA game titles. In 2015 the Academy of Motion Picture Arts and Sciences recognized his work in destruction modeling with an Academy Award for Technical Achievement. He received his doctorate from the Georgia Institute of Technology in 2000, the same year he joined the faculty at U.C. Berkeley. Professor O’Brien is a Sloan Fellow and ACM Distinguished Scientist, has been selected as one of Technology Review’s TR-100, and has been awarded research grants from the Okawa and Hellman Foundations. He is currently serving as ACM SIGGRAPH Director at Large.  http://obrien.berkeley.edu

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