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Ioannis Pitas, Nikos Nikolaidis. Copyright protection of images using robust digital signatures, (ICASSP'96) IEEE International Conference on Acoustics, Speech and Signal Processing, May. Vol. 4 1996. pp. 2168-2171. [.Z]   ABSTRACT : A method for copyright protection of digital images is presented in this paper. Copyright protection is achieved by embedding an ``invisible'' signal, known as digital signature, in the digital image. Signature casting is performed in the spatial domain by slightly modifying the intensity level of randomly selected image pixels. Signature detection is done by comparing the mean intensity value of the marked pixels against that of the not marked pixels. Statistical hypothesis testing is used for this purpose. The signature can be designed in such a way that it is resistant to JPEG compression and lowpass filtering. This is done by minimizing the energy content of the signature signal in higher frequencies. Experiments on real image data verify the effectiveness of the method. | Neil's Homepage | Steganography | JJTC Main Page | Send comments to nfj(at)jjtc(dot)com. Copyright, ©1995-2008, Neil F. Johnson. All Rights Reserved. Steganography and Digital Watermarking Cryptography and Encryption The Codebreakers Research in Cryptography Related Topics and Issues Documents, News and Publications Security Newsgroups Security Tools and Archives Organizations in Security and Privacy Other Security Links -------------------------------------------- Main Security Page Neil's Home Page JJTC Home Page Center for Secure Information Systems Site Map -------------------------------------------- Cryptanalysis Cryptography and Encryption Documents, News and Publications Government Agencies Interest and User Groups Journals Network Security Newsletters Organizations in Security and Privacy Related Security Topics and Issues Research in Cryptography Security Page Security Applications Security Newsgroups Security Software Security Tools and Archives Special Events and Announcements Steganography and Digital Watermarking Steganography Documents Usenet Security Newsgroups Vendors Other Security Links