DSP seminar, Wed Apr. 12 Time and location: 4:00-5:00 PM 2269 Beckman Institute

Title: Adaptive Pre- and Post-Filtering for Block-Based Image
       and Video Communication Systems


Speaker: Trac D. Tran

Professor,	
ECE Department, 
The Johns Hopkins University



Abstract:

This seminar presents a novel integrated framework of adaptive
 pre- and post-filtering operators applied along the data block 
boundaries in traditional block-based image/video communication 
systems. The flexible framework can be thought of as a generalization 
of and provides a significant improvement for the traditional 
block DCT coding approach in JPEG/MPEG in coding efficiency as 
well as in error-resilient communications. The talk covers all 
aspects of the aforementioned framework -- from fundamental theory 
to practical designs, efficient implementations, and applications 
in image/video compression, error concealment, and multiple description 
coding.


Biography: 

Trac D. Tran received the B.S. and M.S. degrees from the Massachusetts 
Institute of Technology, Cambridge, in 1993 and 1994, respectively, 
and the Ph.D. degree from the University of Wisconsin, Madison, in 1998, 
all in Electrical Engineering. In July of 1998, Dr. Tran joined the 
Department of Electrical and Computer Engineering, The Johns Hopkins 
University, Baltimore, MD, where he currently holds the rank of Associate 
Professor. His research interests are in the field of digital signal processing, 
particularly in multirate systems, filter banks, transforms, wavelets, and 
their applications in signal analysis, compression, processing, and communications. 

Dr. Tran was the co-director (with Prof. J. L. Prince) of the 33rd Annual 
Conference on Information Sciences and Systems (CISS'99), Baltimore, MD, 
in March 1999. He received the NSF CAREER award in 2001. In the summer of 
2002, Dr. Tran was an ASEE/ONR Summer Faculty Research Fellow at the Naval 
Air Warfare Center Weapons Division (NAWCWD) at China Lake, California. 
He has served as Associate Editor of the IEEE Transactions on Signal Processing 
and is currently serving as Associate Editor of the IEEE Transactions on 
Image Processing. Dr. Tran is also a member of the Signal Processing Theory 
and Methods (SPTM) Technical Committee of the IEEE Signal Processing Society.