| Jiri Fridrich, Lt. Arnold C. Baldoza, Richard J. Simard.
Robust digital watermarking based on keydependent basis functions, IHW'98 - Proc. of the International Information hiding Workshop, April.
1998.
[ZIP]
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Abstract: In this paper, we introduce the concept of keydependent basis functions and discuss its applications to secure robust watermarking for copyright protection and to designing secure public blackbox watermark detectors. The new schemes overcome a possible security weakness of global, nonadaptive schemes that apply watermark patterns spanned by a small number of publicly known basis functions. The watermark is embedded into the projections of an image onto the secret set of keydependent functions (patterns). The robustness of the watermarking scheme with respect to filtering, lossy compression, and combinations of many other attacks is studied. Finally, we propose a candidate for a watermarking scheme that enables the construction of a secure public watermark detector.
Keywords: Robust image watermarking, attacks, orthogonal patterns, secure public watermark detector Also available in MS Word 7.0 format. | ||||||||
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