Events Calendar

Perceptual Image Segmentation

Wanqing Li, Ph.D.
University of WollongongAbstract:
This talk explores the natural mechanisms by which human beings describe and organize images as a means to
develop a computational model for visual tasks. More specifically, the talk focuses on a model for intermediate
image segmentation. The model combines features derived from psychological considerations with neurophysiological
processes. Psychological characteristics are based on Gestalt psychology, in particular we employ
the gestalt properties of similarity in grey-level, continuity, closure and co-circularity, while physiological
processing is achieved through the use of Hierarchical Cluster Model (HCM). The motivation for such a study
stems from the fact that these initiatives will result in an image processing system closely resembling the human
visual system. An implementation of the model with three level HCM and quantified Gestalt properties will be
described. Experimental results have shown that the proposed model can produce more consistent results to
manual segmentation than the well known JSEG and NCuts methods.Bio:
Wanqing Li received his B.Sc. in physics and electronics and M.Sc. in computer science from Zhejiang
University, China in 1983 and 1987 respectively. He received his PhD in electronic engineering from The
University of Western Australia in 1998. He was a Lecturer from 1987 to 1990 and Associate Professor from
1991 to 1992, both with the Department of Computer Science, Zhejiang University. He joined Motorola
AustralianResearch Centre in 1998 as a Senior Research Engineer and later became a Principal Research
Engineer. Since 2004, he has been a Senior Lecturer with the School of Computer Science and Software
Engineering, University of Wollongong. Dr. Li received Motorola CTO's Award in 2003 and is a co-founder of
the Centre for Multimedia Signal Processing and Content Management at University of Wollongong. His
current research interests include human motion analysis, multimodal biometric cryptosystems and automatic
annotation and retrieval of multimedia content and image/video watermarking.Hosted by Prof. C.C.-Jay Kuo

Location: Hughes Aircraft Electrical Engineering Center (EEB) - 248

Audiences: Everyone Is Invited

Contact: Talyia Veal