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Phil Regalia, Ph.D.
The Catholic University of America
Abstract:
Information hiding is a more recent viewpoint of watermarking, which exploits
information theory to deduce fundamental limits on how much information can
be hidden in a cover signal, subject to distortion constraints from
embedding, and resilience due to signal degradation. Applications include
copyright protection, fingerprinting, embedding confidential patient
information in medical images, and other areas of stenography. This talk
presents a tutorial overview of recent results in information hiding stemming
from an information theoretic viewpoint, along with coding techniques which
are adapted to information hiding, including dirty paper coding and nested
lattice codes. Some standard techniques for watermarking are revisited in
this framework, and gaps between theoretically achievable embedding capacity
and practical attainable rates are emphasized. Some relations to
cryptography, dual source coding problems, and high-capacity multi-user
communications are likewise reviewed.
Biography:
Phil Regalia received his PhD from the University of California, Santa Barbara
in 1988. He spent many years working in France at the National Institute of
Telecommunications near Paris, and has had sabbatical stays with the Delft
University of Technology (in the Netherlands) and the Army Research lab in
Adelphi, MD. He was elected IEEE Fellow in 2000 for contributions to adaptive
filtering, and has been active in signal processing for communications in
recent years. He is the founding Editor-in-Chief of the EURASIP J. Wireless
Communications and Networking, and serves as an Associate Editor with the
IEEE Trans. Circuits and Systems, the Int. Journal of Adaptive Control and
Signal Processing, and the EURASIP J. Applied Signal Processing.
Dr. Regalia returned to the US two years ago, and is presently stationed with
CUA in Washington, DC.
Monday, February 12th at 10 a.m.
Bossone 303
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