Object Discovery and Localization in Active Sensing Networks

Friday, June 5, 2009 - 2:49pm

Monday, June 15, 2009
3:30 – 4:30
Computer Science Conference Room, Harold Frank Hall Rm. 1132

HOST: Heather Zheng

SPEAKER: Rong Zheng
Computer Science, University of Houston

Title: Object Discovery and Localization in Active Sensing Networks


Distributed active sensing is a new sensing paradigm, where active
sensors as illuminating sources and passive sensors as receivers are
distributed in a field, and collaboratively detect objects of interest.
Object discovery concerns with the problem of detecting the presence and
determining the location of objects with many applications in robot
navigation, object tracking, and surface and/or structure fatigue
testing etc. In this talk, we study the fundamental properties of
distributed active sensing networks (DASNs) in detecting and localizing
objects. A novel notion of “exposure” is defined, which quantifies the
dimension limitations in detectability. Using simple geometric
constructs, we propose polynomial-time algorithms to compute the
exposure and regions where the center of the objects may lie. We also
discuss our initial results on tracker design for mobile objects.


Rong Zheng is an assistant professor of the Department of Computer
Science, University of Houston since 2004; and is the founder of the
wireless system research group. She received her PhD degree from
Department of Computer Science, University of Illinois at
Urbana-Champaign in May 2004 and earned her ME and BE in Electrical
Engineering in May 1998 and June 1996 from Tsinghua University, People’s
Republic of China. Dr. Zheng received the National Science Foundation
CAREER Award in 2006. She is presently a member of IEEE Computer Society
and ACM. Her research interests include modeling and design of wireless
systems, network information theory, and distributed algorithms.