He has been awarded the Korean Government Overseas Scholarship during his Ph. D. courses. From 1993 to 1994 he was a research associate in the SIPI (Signal and Image Processing Institute) at USC. He was with the Samsung Electronics Co. Ltd. in Korea as a senior researcher from 1994 to 1995. On August 1995, he joined the department of Electronics and Electrical Eng. of the Hong-Ik University, and worked as an assistant and associate professor. From September 2003, he is with the Department of Electrical Engineering and Computer Science at Seoul National University as a professor. His primary research interests include computer vision, image understanding, pattern recognition, robot vision and multimedia applications.

2021年当选IEEE Fellow