He was a post doctoral research associate at Brown University Computer Graphics Group during June 2000 - Feb 2002. He received Ph.D from dept of information engineering, the University of Tokyo in 2000. He also worked at Xerox PARC, Microsoft Research, and CMU as a student intern. His research interest is in user interface in general and current focus is on interaction techniques for 3D graphics. His paper on a sketch-based 3D freeform modeling system (Teddy) won Impact Paper Award at SIGGRAPH 1999. Visit http://www-ui.is.s.u-tokyo.ac.jp/~takeo for more info.