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Issue No. 01 - January/February (1999 vol. 19)
ISSN: 0272-1716
pp: 18-24
Digital watermarks have been proposed to protect legal owners from piracy--illegal copying and retransmission. However, many research problems remain open, and watermarking techniques are themselves vulnerable to piracy. This article collects fundamental watermarking concepts and offers a general watermarking framework for protecting the copyright of digital products. Registration of watermarked products is proposed for developing a trustworthy overall protection system.

I. Pitas and G. Voyatzis, "Protecting Digital-Image Copyrights: A Framework," in IEEE Computer Graphics and Applications, vol. 19, no. , pp. 18-24, 1999.
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