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Status: RO Date: Mon, 23 Sep 2002 21:39:53 -0400 To: undisclosed-recipient:; From: Monty Solomon <[EMAIL PROTECTED]> 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 --- end forwarded text -- ----------------- R. A. Hettinga <mailto: [EMAIL PROTECTED]> 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' --------------------------------------------------------------------- The Cryptography Mailing List Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]