Bibliographical sketch: Chi Keung Tang received the MSc and PhD degrees in computer science 
from the University of Southern California, Los Angeles, in 1999 and 2000, respectively.  
Since 2000, he has been with the Department of Computer Science and Engineering at the 
Hong Kong University of Science and Technology where he is currently a full professor.  
He was on sabbatical at the UCLA Mathematics Department in 2008.  He was an adjunct researcher 
at the Visual Computing Group of Microsoft Research Asia.  His research areas are computer 
vision and computer graphics where he made contributions in interactive segmentation and 
image techniques for graphics applications.  He is currently an associate editor of 
IEEE Transactions on Pattern Analysis and Machine Intelligence (TPAMI), and on the 
editorial board of International Journal of Computer Vision (IJCV). He served as an 
area chair for ACCV 2006, ICCV 2007, ICCV 2009, ICCV 2011, and as a technical papers 
committee member for the inaugural SIGGRAPH Asia 2008, SIGGRAPH 2011, SIGGRAPH Asia 2011, 
SIGGRAPH 2012, and SIGGRAPH Asia 2012.  He is a senior member of the IEEE Computer Society.