|
|
|
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[WM]: ICIP 2005: tutorial on watermarking security
Dear watermarkers,
you may find interesting to know that at the next ICIP (Genova, 11-14 =
September 2005, http://www.icip05.org) a tutorial is scheduled
dealing with the broad topic of "Watermarking security", a very hot =
topic in current watermarking research. A brief description of
the tutorial is reported at the end of this e-mail for your convenience.
Should you be interested in attending the tutorial, you can get more =
information by visiting the ICIP web site at page:
http://www.icip05.org/program.htm
Please note that those that already registered to ICIP by paying an =
early registration fee can still pay a reduced fee for the
tutorial, by registering before July 31 (see note at the end of page =
http://www.icip05.org/program.htm).
Best regards,
Mauro Barni
***********************************************************************
ICIP 2005 Tutorial
Security issues in digital watermarking
M. Barni, F. Perez-Gonzalez
Though digital watermarking has been in place for about ten years, =
security issues have received an increasing attention only
recently. Yet, security of watermarking systems is a crucial problem in =
most application scenarios, such as copyright protection,
traitor tracing, authentication, digital rights management. It is not =
rash to affirm that the future of watermarking technology as a
viable solution to some of the hottest problems in Multimedia Security =
depends on the development of a solid framework to analyse
the security of watermarking systems. As a matter of fact, it is not =
sufficient that new, supposedly secure, watermarking algorithms
are developed, if no mean is available to measure such a security. As it =
is commonly stated: =93no security is often better than
uncertain security=94
According to the above necessity, a great deal of research has been =
carried out in the last couple of years to introduce a formal
framework whereby watermarking security is defined and viable tools to =
measure it are made available. Though research is still at
the beginning and many open problems still exist, a theoretical bulk has =
already been developed permitting to come out from the fog
that characterized the early approaches to the investigation of =
watermark security. Specifically, by casting the security problem in
an information-theoretic framework, and by borrowing some concepts from =
cryptography, several measures of security have been
proposed and used to analyse the security of some of the most popular =
approaches to watermarking.
It is the scope of this tutorial to introduce the attendants to the =
field of watermarking security, reviewing the main problems
behind it and the approaches that have been proposed so far to deal with =
them. The tutorial largely relies on new unpublished
results, that are likely to have a great impact on future research and =
practical developments in the watermarking field. The
tutorial is directed to researchers and practitioners that, while being =
already familiar with digital watermarking, want to keep
abreast with the latest advances in this field, with particular =
reference to security, a problem stemming from the needs raised by
practical applications of watermarking technology.
In the following an outline of the tutorial is given.
1. Brief introduction to digital watermarking.
Even if it is assumed that the attendants are familiar at least with the =
basics of digital watermarking, a brief
information-theoretic introduction to watermarking will be given, so to =
lay a uniform symbolism and terminology. Specifically,
watermarking systems will be classified according to their payload =
(1-bit vs multibit watermarking), their embedding strategy
(informed vs. blind watermark embedding), and the number and kind of =
parameters that are assumed to be unknown to the attacker.
2. Review of the importance of security issues in practical =
applications.
In this part of the tutorial, examples will be given to highlight the =
importance of watermarking security in practical applications.
The examples will rely on a heuristic definition of security. In spite =
of this fact, the examples will be chosen in such a way to
highlight the main ideas behind the intuitive concept of watermarking =
security, thus paving the way for the subsequent part of the
tutorial, dedicated to the formal definition and analysis of =
watermarking security.
3. Definition of watermarking security.
By relying on the examples described previously, we will present various =
definitions of watermarking security. The pros and cons of
each definition will be reviewed, and a final definition will be given, =
which, according to the presenters, best grasps the main
ideas behind the security concept.
4. An information-theoretic framework for watermark security.
This is the core of the tutorial. An information-theoretic framework for =
watermarking security will be presented and thoroughly
discussed. The presentation will start with a brief summary of some =
famous Shannon=92s results and their application to conventional
cryptography. Then a security framework based on the leakage of =
information between the watermarking system secrets and the
quantities observable by the attacker is introduced. The leakage of =
information is measured in terms of mutual information between
the secrets and the observables, and the security of the system in terms =
of the corresponding equivocation. Both the discrete and
the continuous cases will be analysed. By following an analysis =
resembling the Diffie-Helmann taxonomy of the attacks that may be
brought to a cryptographic system, several scenarios will be reviewed =
which are characterized on the basis of the observables
available to the attacker.
Simple examples will be given to help the attendants familiarize with =
the exposed ideas.
5. Security of practical systems.
In this part of the tutorial, the security framework described =
previously will be used to evaluate the security of some of the most
popular watermarking systems proposed in the literature, including =
spread spectrum and QIM (quantization index modulation)
watermarking.
6. Open issues and directions for future research.
Despite recent advances, watermarking security is still a largely =
unexplored field, for this reason the tutorial will end with a
review of the hottest open issues and some indications about the most =
promising directions for future research.
About the presenters
Mauro Barni
Prof. Mauro Barni has carried out his research activity for over 12 =
years first at the Department of Electronics and
Telecommunication of the University of Florence, then at the Department =
of Information Engineering of the University of Siena where
he works as associate Professor. During the last decade, his research =
activity has focused on digital image processing and computer
vision. More recently he has been studying the application of image =
processing techniques to copyright protection and
authentication of multimedia (digital watermarking), and to the =
transmission of images and video signals in error-prone, wireless
environments. He is author/co-author of more than 150 papers published =
in international journals and conference proceedings, and
holds three European patents in the field of digital watermarking. He is =
co-author of the book =93Watermarking Systems Engineering:
Enabling Digital Assets Security and other Applications=94, published by =
Dekker Inc. in February 2004.He serves associate editor of
the IEEE Signal Processing Magazine (column and forum section), of the =
IEEE Signal Processing Letters, and is in the editorial board
of the Eurasip Journal of Applied Signal Processing. In the past he =
served as associate editor of the IEEE Transactions on
Multimedia. He was the general chair of the 2004 edition of the IEEE =
Multimedia Signal Processing workshop, and will be the general
chair of the fourth edition of the International Workshop on Digital =
Watermarking (IWDW 2005), to be held in Siena.Prof. Barni is a
member of the IEEE Multimedia Signal Processing Technical Committee =
(MMSP-TC). He guest-edited several special issues on
watermarking-related topics of Elsevier Signal Processing, of the IEEE =
Communication Magazine and of the Journal of Applied Signal
Processing (Eurasip). He also organized several special sessions on =
watermarking-related topics in important conferences and
workshops including ICIP (IEEE International Conference on Image =
Processing), Eusipco (European Signal Processing Conference), SPIE
Electronic Imaging, and WIAMIS (International Workshop on Image Analysis =
for Multimedia Interactive Services).He frequently reviews
papers for the main journals in Image and Signal Processing, and =
Computer Vision (IEEE TSP, IEEE TIP, IEEE CSVT, IEEE Trans. PAMI,
IEEE Signal Processing Letters, Signal Processing, JASP, Pattern =
Recognition, Pattern Recognition Letters =85). He has been member of
the technical programme committee of several prestigious International =
Conferences (SPIE Conference on Security, Steganography, and
Watermarking of Multimedia Contents, SPIE-AM01, Mathematics of =
Data/Image Coding, Compression and Encryption; MMSP - Multimedia
Signal Processing Workshop; ICIP =96 IEEE International Conference on =
Image Processing; ICASSP =96 IEEE International Conference on
Acoustic, Sound and Speech Processing; ICME IEEE International =
Conference on Multimedia and Expo; EUSIPCO - European Signal
Processing Conference; IWDC 2002 - Thyrrenian International Workshop on =
Digital Communications; Baiona Workshop on Signal Processing
in Communications, ACIVS - Advanced Concepts for Intelligent Vision =
Systems; AVBS - Advanced Video-Based Surveillance Systems etc
=85).
He participated to several National and European research projects on =
diverse topics, including computer vision, multimedia signal
processing, remote sensing, digital watermarking, IPR protection. In =
particular he is the scientific responsible of the research
unit of Siena of the European Network of Excellence ECRYPT (European =
Network in Cryptology) funded by the EC under the FP6. He has
been the co-ordinator of the project =93Digital watermarking for the =
protection and authentication of remote sensing images accessible
through private and public open networks=94 funded by the Italian Space =
Agency for the years 2001-2003, and is the scientific
responsible of the research unit of Siena of the project =93WAVECOP:
watermarking for video and images copyright protection=94, funded by the =
Italian Ministry for the years 2003-2004.
Fernando P=E9rez-Gonz=E1lez
Fernando P=E9rez-Gonz=E1lez received the Telecommunications Engineer =
Degree
from the University of Santiago, Santiago, Spain, in 1990 and the Ph.D.
from the University of Vigo, Vigo, Spain, in 1993, also in
Telecommunications Engineering. He joined the faculty of the School of
Telecommunications Engineering, University of Vigo, as an assistant
professor in 1990 and is currently Professor in the same institution.
Prof. P=E9rez-Gonz=E1lez has pioneered the application of digital
communications techniques to the analysis and design of digital
watermarking and data-hiding systems. After almost a decade working in
this field, he is now leading a research team that tries to export
data-hiding results, achieved under the =93informed-embedding=94 =
paradigm, to
communications problems, such as precoding or multiuser communications. =
He
has co-authored about 30 papers in leading international journals and =
more
than 80 papers published in various conference proceedings. Prof.
P=E9rez-Gonz=E1lez is also co-editor and one of the main authors of the =
book
Fundamentals of Digital Image Watermarking which will be published by
Wiley, and is also co-editor of the book Intelligent Methods in Signal
Processing and Communications (Boston, MA: Birkhauser, 1997).
He has been Guest Editor of three special sections of the EURASIP =
journal
Signal Processing devoted to signal processing for communications and
digital watermarking, as well as Guest Editor of a Feature Topic of the
IEEE Communications Magazine on digital watermarking. Prof. =
P=E9rez-Gonz=E1lez
was the General Chairman of the 5th and 6th Baiona Workshops on Signal
Processing in Communications, held in Baiona, Spain, in 1999 and 2003,
respectively, and will co-chair the 7th Information Hiding Workshop, =
which
will take place in Barcelona, Spain, during June 2005.
He is also frequent reviewer of the leading journals in Image and Signal
Processing, and Digital Communications (IEEE TCAS; IEEE TSP; IEEE TIP;
IEEE TAC; IEEE TCOM; IEEE TSMC; IEEE Trans. On Multimedia; IEEE Signal
Processing Letters; Signal Processing; Multidimensional Systems and =
Signal
Processing; EURASIP Journal on Applied Signal Processing; IEE =
Proceedings
on Vision, Image and Signal Processing; Electronic Letters on Computer
Vision and Image Analysis; Journal on Electronic Imaging; Journal of
Communication and Networks; Optical Engineering, etc.) and member of the
technical program committee of several conferences (International =
Workshop
on Intelligent Communication Technologies; International Workshop on
Digital Watermarking; EUSIPCO; IEEE WIAMIS; Conference on Communications
and Multimedia Security; IEEE MMSP, etc.) Prof. P=E9rez-Gonz=E1lez was =
guest
speaker at the 2nd International Workshop on Digital Watermarking, =
Seoul,
Korea, 2003, and has given invited lectures on image watermarking at
several European institutions.
He has been principal researcher of many European and Spanish research
projects, dealing with different aspects of digital communications and
watermarking. Among them, he was responsible of the University of Vigo
group that took part in the project CERTIMARK (Certification Techniques
for Digital Watermarking), funded by EU under FP5, and currently leads =
the
Spanish team that participates in the European Network of Excellence
ECRYPT, in charge of the working group on =93fundamentals of =
watermarking
security=94. He is also scientific responsible of the watermarking tasks =
for
the National projects AMULET, DIPSTICK and IM3. He also frequently
cooperates with Spanish and international companies in the areas of
digital communications, and image and signal processing. In the last
decade, Prof. P=E9rez-Gonz=E1lez has managed more than 25 research =
contracts
with industry and has co-founded 5 telecommunications companies.
______________________________________________________________________________
Watermarking Mailing List - http://www.watermarkingworld.org/ml.html
To unsubscribe send email to "majordomo@watermarkingworld.org" with
"unsubscribe watermarking YOURMAIL" in the body.
______________________________________________________________________________
|
