"Reversible data hiding"

[R. A. Hettinga]

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Status: RO
Date: Mon, 23 Sep 2002 21:39:53 -0400
To: undisclosed-recipient:;
From: Monty Solomon <monty at roscom.com>
Subject: "Reversible data hiding"

     Xerox, University of Rochester Researchers Discover Better Way to
     Embed, Remove Hidden Data in Digital Images
     - Sep 23, 2002 09:34 AM (BusinessWire)

ROCHESTER, N.Y.--(BUSINESS WIRE)--Sept. 23, 2002--Scientists from
the University of Rochester and Xerox Corporation (NYSE:XRX) have
invented a new way to hide information within an ordinary digital
image and to extract it again -- without distorting the original or
losing any information.
    Called "reversible data hiding," the new technique will solve a
dilemma faced by digital image users, particularly in sensitive
military, legal and medical applications. Until now they have had to
choose between an image that's been watermarked to establish its
trustworthiness and one that isn't watermarked but preserves all the
original information, allowing it to be enlarged or enhanced to show
detail. When information is embedded using the newly discovered
method, authorized users can do both.
    The technique, described in a paper that will be presented at the
IEEE 2002 International Conference on Image Processing here on Sept.
24, was co-developed by Mehmet U. Celik and A. Murat Tekalp of the
university and Gaurav Sharma and Eli Saber of Xerox. Their
collaborative research was done in the Center for Electronic Imaging
Systems (CEIS), a New York State Office of Science, Technology and
Academic Research designated center for advanced technology.

...

     - http://finance.lycos.com/home/news/story.asp?story=28782313

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-- 
-----------------
R. A. Hettinga <mailto: rah at ibuc.com>
The Internet Bearer Underwriting Corporation <http://www.ibuc.com/>
44 Farquhar Street, Boston, MA 02131 USA
"... however it may deserve respect for its usefulness and antiquity,
[predicting the end of the world] has not been found agreeable to
experience." -- Edward Gibbon, 'Decline and Fall of the Roman Empire'

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