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Invisible Watermarks as Digital Signatures

IP.com Disclosure Number: IPCOM000031559D
Original Publication Date: 2004-Sep-29
Included in the Prior Art Database: 2004-Sep-29

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Digital images are easily traded on the internet with or without the authors consent. Watermarks help to prove the ownership of an image. However, people who have bought an image don't want to see the watermark and so was born the need for invisible watermarks. Described is a method of placing truly hidden watermarks within an image that can't be removed in any easy manner.