Hau San Wong is currently an assistant professor in the Department of Computer Science, City University of Hong Kong. He received the BSc and MPhil degrees in Electronic Engineering from the Chinese University of Hong Kong, and the PhD degree in Electrical and Information Engineering from the University of Sydney. He has also held research positions in the University of Sydney and Hong Kong Baptist University. His research interests include multimedia signal processing, neural networks and evolutionary computation. He is the co-author of the book Adaptive Image Processing: A Computational Intelligence Perspective, which is a joint publication of CRC Press and SPIE Press, and was an organizing committee member of the 2000 IEEE Pacific-Rim Conference on Multimedia and 2000 IEEE Workshop on Neural Networks for Signal Processing, which were both held in Sydney, Australia. He has also co-organized a number of conference special sessions, including the special session on Image Content Extraction and Description for Multimedia in 2000 IEEE International Conference on Image Processing, Vancouver, Canada, andMachine Learning Techniques for Visual Information Retrieval in 2003 International Conference on Visual Information Retrieval, Miami, Florida.

Horace H. S. Ip received his B.Sc. (First Class Honours) degree in Applied Physics and Ph.D. degree in Image Processing from University College London, United Kingdom, in 1980 and 1983 respectively. Presently, he is the Chair Professor of the Computer Science Department and the founding director of the AIMtech Centre (Centre for Innovative Applications of Internet and Multimedia Technologies) at City University of Hong Kong. His research interests include image processing and analysis, pattern recognition, hypermedia systems in education and computer graphics.

Prof. Ip the Chairman of the IEEE (Hong Kong Section) Computer Chapter, and the Founding President of the Hong Kong Society for Multimedia and Image Computing. He has published over 160 papers in international journals and conference proceedings. Prof. Ip is a member of the IEEE, a Fellow of the Hong Kong Institution of Engineers (HKIE), Fellow of the Institution of Engineers (IEE), UK and Fellow of the International Association for Pattern Recognition (IAPR).

Lawrence Iu was awarded the Hong Kong Ten Most Outstanding Students Award in 2000. He has studied in Cornell University, USA and attained the Deans Honor List for outstanding scholastic performance. He was a research assistant in the City University of Hong Kong in 2002, and is currently pursuing the Bachelor of Medicine& Bachelor of Surgery degree in the University of Hong Kong.

Kent K. T. Cheung received BSc. (first class honours) and PhD. degrees in the Department of Computer Science, City University of Hong Kong in 1996 and 2002 respectively. He worked as a research staff and a part-time lecturer in the same department until 2004. Within the period of his years in City University of Hong Kong, he involved in a wide range of projects, such as content-based retrieval of color logos, intelligent retrieval of histological images, 3D head model classification and retrieval and an object oriented framework for image representation and retrieval. In 2004, he joined the Department of Computing at The Hong Kong Polytechnic University as a Visiting Assistant Professor. His research interests include content-based retrieval of images and 3D models, image and 3D model classification and evolutionary optimization.

Ling Guan received his Bachelor Degree in Electronic Engineering from Tianjin University, China in 1982, Masters degree in Systems Design Engineering at University of Waterloo, Canada in 1985, and Ph.D. Degree in Electrical Engineering from University of British Columbia, Canada in 1989. From 1993 to 2000, he was on the Faculty of Engineering at the University of Sydney, Australia. Since May 2001, he has been a professor and director of Ryerson Multimedia Research Laboratory at Ryerson University, Toronto, Canada. In November 2001, he was appointed to the position of Canada Research Chair in Multimedia. Dr. Guan held visiting positions at British Telecom (1994), Tokyo Institute of Technology (1999), Princeton University (2000), Microsoft Research Asia (2002). Dr. Guans research interests include human-centered computing, multimedia indexing and retrieval, human-computer interface, transmission of multimedia data over P2P networks, machine learning, and adaptive image and signal processing. He has authored/co-authored more than 200 technical publications, including 50 refereed journal papers, two books and two patents. Dr. Guan is an associate editor/guest editor of numerous international journals, including Proceedings of the IEEE, and two IEEE Transactions. He also serves on the editorial board of CRC Press Book Series on Image Processing. He has involved in organizing many international conferences. He was the Founding General Chair of IEEE Pacific-Rim Conference on Multimedia, and currently serves as the General Chair of 2006 IEEE International Conference on Multimedia and Expo to be held in Toronto, Canada. Dr. Guan is a Senior Member of IEEE, and a Member of IAPR. Currently he is serving on IAPR Technical Committee on Structural and Syntactic Pattern Recognition and is on the Advisory Board of International Computational Intelligence Society. He was a member of IEEE SP Society Technical Committee on Multimedia Signal Processing (2000–2003) and a member of IEEE SP Society Technical Committee on Neural Networks in Signal Processing (1997–2000).