I received the B.E., M.Eng. degrees from Yamanashi University, Japan, in 1986 and 1988, respectively. Then, I received D.Eng. degree from Osaka University, Japan, in 1991. In 1991, I started working as a research assistant of Department of Electrical Engineering and Computer Science, Yamanashi University, Japan. Then, I moved to Department of Systems Engineering, Osaka University, Japan, as a research assistant in 1992. From 1991 to 1994, I developed several vision-guided mobile robots and studied on active and omnidirectonal vision. In 1994, I was an associate professor of Department of Information Science, Kyoto University, Japan, and started research of distributed vision using omnidirectional cameras. From 1998 to 1999, I worked in Department of Electrical and Computer Engineering, University of California, San Diego, USA, as a visiting scholar. From 1999, I am a visiting researcher in ATR Media Integration and Communications Research Laboratories and I have developed an interactive humanoid robot, Robovie. In 2000, I moved to Department of Computer and Communication Sciences, Wakayama University, Japan, as an associate professor. I also became a researcher of PREST, Japan Science and Technology Agency and started a venture company, Vstone Co. Ltd. as a general director. From 2001, I was a professor of Wakayama University, Japan.