Improving the robustness of nonadditive watermarks through optimum detection theory

Alessandro Piva; Mauro Barni; Franco Bartolini; Vito Cappellini; Alessia De Rosa

doi:10.1117/12.384964

9 May 2000 Improving the robustness of nonadditive watermarks through optimum detection theory

Alessandro Piva, Mauro Barni, Franco Bartolini, Vito Cappellini, Alessia De Rosa

Proceedings Volume 3971, Security and Watermarking of Multimedia Contents II; (2000) https://doi.org/10.1117/12.384964
Event: Electronic Imaging, 2000, San Jose, CA, United States

Abstract

In this paper, a new watermarking system for copyright protection of digital images is presented. The method operates in the frequency domain, by embedding a pseudo-random sequence of real numbers in a selected set of DFT coefficients of the image. Moreover, the masking characteristics of the Human Visual System are exploited for watermark hiding and a synchronization pattern is introduced into the watermarked image to cope with geometrical attacks. By relying on statistical decision theory, a new decoding algorithm which is optimum for non-additive full-frame DFT watermarks is then derived. Experimental results highlight both the superiority of the novel detector scheme with respect to conventional correlation-based decoding, both the robustness of the overall system against a large set of attacks aiming at removing the watermark.

Citation Download Citation

Alessandro Piva, Mauro Barni, Franco Bartolini, Vito Cappellini, and Alessia De Rosa "Improving the robustness of nonadditive watermarks through optimum detection theory", Proc. SPIE 3971, Security and Watermarking of Multimedia Contents II, (9 May 2000); https://doi.org/10.1117/12.384964

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