时 间：12月24日星期一下午14：00
地 点：浙大紫金港校区CAD&CG国家重点实验室402室
报告人：许威威 教授
主 题：Motion-guided Mechanical Toy Modeling
Abstract：We introduce a new method to synthesize mechanical toys solely from the motion of their features. The designer specifies the geometry and a time-varying rotation and translation of each rigid feature component. Our algorithm automatically generates a mechanism assembly located in a box below the feature base that produces the specified motion. Parts in the assembly are selected from a parameterized set including belt-pulleys, gears, crank-sliders, quickreturns, and various cams (snail, ellipse, and double-ellipse). Positions and parameters for these parts are optimized to generate the specified motion, minimize a simple measure of complexity, and yield a well-distributed layout of parts over the driving axes. Our solution uses a special initialization procedure followed by simulated annealing to efficiently search the complex configuration space for an optimal assembly.
Short bio：Dr. Weiwei Xu is a professor at Hangzhou Normal University in the department of computer science. Before that, Dr. Weiwei Xu was a researcher in Internet Graphics Group, Microsoft Research Asia from Oct. 2005 to Jun 2012. Dr. Weiwei Xu have been a post-doc researcher at Ritsmeikan university in Japan around one year from 2004 to 2005. He received Ph.D. Degree in Computer Graphics from Zhejiang University, Hangzhou, and B.S. Degree and Master Degree in Computer Science from Hohai University in 1996 and 1999 respectively.
Dr. Weiwei Xu's main research interests include digital geometry processing and computer animation techniques. He is now focusing on how to enhance the geometry design algorithm though the integration of physical properties.
