报告时间：2015年6月25日星期四下午3:00
报告地点：浙江大 学紫金港校区蒙民伟楼CAD&CG国家重点实验室402室
报告题 目：Deformation Capture and Modeling of Soft Objects
报告人：Prof. Kangkang Yin
School of Computing (SoC) at the National University of Singapore (NUS)
主持人：任重 副教授
Abstract: In this talk, we will present a data-driven method for deformation capture and modeling of general soft objects. We adopt an iterative framework that consists of one component for physics-based deformation tracking and another for spacetime optimization of deformation parameters. Low cost depth sensors are used for the deformation capture, and we do not require any force-displacement measurements, thus making the data capture a cheap and convenient process. We augment a state-of-the-art probabilistic tracking method to robustly handle noise, occlusions, fast movements and large deformations. Our spacetime optimization of the deformation model includes not only the material elasticity parameters and dynamic damping coefficients, but also the reference shape which can differ significantly from the static shape for soft objects. We propose a novel splitting algorithm that alternates between reference shape optimization and deformation parameter estimation, and thus enables tailoring the optimization of each subproblem more efficiently and robustly. We showcase the ability of our system with high quality animations generated from optimized deformation parameters for a variety of soft objects, such as live plants and fabricated models.
Speaker's Bio: KangKang Yin is an endowed Assistant Professor in the School of Computing (SoC) at the National University of Singapore (NUS). She received the PhD degree from the University of British Columbia in 2007. She was an Associate Researcher at Microsoft Research Asia from 2008 to 2010. Her research interests include Computer Animation, Geometry Processing, and Human Computer Interaction. She is especially known internationally for her work on modeling human motions. She is an Associate Editor of Computers & Graphics. She has served on the program committees of all major computer graphics conferences including SIGGRAPH, SIGGRAPH Asia, Eurographics, Symposium on Computer Animation(SCA), among others, and is a program co-chair for Pacific Graphics 2013. She is the recipient of the Best Paper Award at the 2011 and 2013 ACM SIGGRAPH/Eurographics Symposium on Computer Animation. She is a member of the IEEE and ACM. For more information, please visit http://www.comp.nus.edu.sg/~kkyin
