22 March 2001 Wavelet-based method for high-frequency subband watermark embedding
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Proceedings Volume 4209, Multimedia Systems and Applications III; (2001) https://doi.org/10.1117/12.420837
Event: Information Technologies 2000, 2000, Boston, MA, United States
Abstract
In this paper a novel wavelet based robust blind watermarking scheme is presented. Taking into account the property of the human visual system, the proposed scheme embeds the watermark into the wavelet coefficients representative of the image's areas highly dense of details. More specifically a two stages unconventional wavelet decomposition is used. In fact, after having performed a 2D one-level wavelet decomposition, the high frequency wavelet subbands are further wavelet decomposed, thus obtaining those coefficients where the mark is finally embedded. Experimental results demonstrate that this embedding strategy allows to greatly increase the local ratio between the mark and the original image energies, thus leading to robustness even against severe image degradations, without transparency loss.
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Patrizio Campisi, Alessandro Neri, Marco Visconti, "Wavelet-based method for high-frequency subband watermark embedding", Proc. SPIE 4209, Multimedia Systems and Applications III, (22 March 2001); doi: 10.1117/12.420837; https://doi.org/10.1117/12.420837
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