His research interests are broadly in computer vision and machine learning. He received his BA in Engineering in 1993 and his PhD in 1996, both from the University of Cambridge, after which he received a Jesus College Research Fellowship in Cambridge 1996-97 and was a research scientist in the DEC / Compaq Research Lab in Boston 1998-2001. While in NTU he was concurrently a Singapore-MIT Alliance Fellow 2003-2006, the Director for the Centre of Multimedia and Network Technology 2007-2015 and an NTU Senator 2010-2014. He is on the Editorial Board for the International Journal of Computer Vision, and was a General Co-Chair for the Asian Conference on Computer Vision 2014.