University of Minnesota
University Relations
http://www.umn.edu/urelate
612-624-6868
myU OneStop


Go to unit's home.

Home | Seminars and Symposia | Past seminars/symposia: Thursday, April 25, 2013

DTC Seminar Series

Data Embedding in Digital Media

by

Stella N. Batalama
Department of Electrical Engineering
State University of New York at Buffalo

Thursday, April 25, 2013
3:30 p.m. reception
4:00 p.m. seminar

401/402 Walter Library

BatalamaWe formulate and discuss the problem of embedding data in digital media (still images, video, audio) with minimum mean-square distortion for any desired data recovery error rate. We find the optimal embedding data carrier for any representation domain of the host medium under second-order-statistics characterization of the host. We generalize the result to embedding in linearly modified hosts and to embedding with multiple optimized carriers. The development is a good example of what fundamental signal processing theory can offer as solutions to digital media applications in the fields of watermarking, steganography, annotation, authentication, media multiplexing. Examples from image and video embedding will be provided. Time permitting, we will also discuss our findings on the problem of steganalysis where the presence of unknown hidden data is to be detected (passive steganalysis) and/or the unknown hidden data are to be forcefully extracted (active steganalysis).

 

Stella N. Batalama received the Diploma degree in computer engineering and science (5-year program) from the University of Patras, Greece in 1989 and the Ph.D. degree in electrical engineering from the University of Virginia, Charlottesville, VA, in 1994. In 1995 she joined the Department of Electrical Engineering, State University of New York at Buffalo, Buffalo, NY, where she is presently a Professor. From 2009 to 2011, she served as the Associate Dean for Research of the School of Engineering and Applied Sciences and since 2010, she is serving as the Chair of the Electrical Engineering Department. During the summers of 1997-2002 she was Visiting Faculty in the U.S. Air Force Research Laboratory (AFRL), Rome, NY. From Aug. 2003 to July 2004 she served as the Acting Director of the AFRL Center for Integrated Transmission and Exploitation (CITE), Rome NY. Her research interests include small-sample-support adaptive filtering and receiver design, cooperative and cognitive communications and networks, covert communications and steganography, robust spread-spectrum communications and adaptive multiuser detection, compressive sampling. Her work in these fields has been reported in about 140 — predominantly IEEE — journal and conference proceedings publications. Dr. Batalama was an associate editor for the IEEE Communications Letters (2000-2005) and the IEEE Transactions on Communications (2002-2008).