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Proceedings Paper

Embedding distortion modeling for non-orthonormal wavelet based watermarking schemes
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Paper Abstract

In this paper a universal embedding distortion model for wavelet based watermarking is presented. The present work extends our previous work on modelling embedding distortion for watermarking algorithms that use orthonormal wavelet kernels to non-orthonormal wavelet kernels, such as biorthogonal wavelets. By using a common framework for major wavelet based watermarking algorithms and the Parseval's energy conservation theorem for orthonormal transforms, we propose that the distortion performance, measured using the mean square error (MSE), is proportional to the sum of energy of wavelet coefficients to be modified by watermark embedding. The extension of the model to non-orthonormal wavelet kernel is obtained by rescaling the sum of energy of wavelet coefficients to be modified by watermark embedding using a weighting parameter that follows the energy conservation theorems in wavelet frames. The proposed model is useful to find optimum input parameters, such as, the wavelet kernel, coefficient selections and subband choices, for a given wavelet based watermarking algorithm.

Paper Details

Date Published: 27 January 2009
PDF: 12 pages
Proc. SPIE 7248, Wavelet Applications in Industrial Processing VI, 72480K (27 January 2009); doi: 10.1117/12.810719
Show Author Affiliations
Deepayan Bhowmik, The Univ. of Sheffield (United Kingdom)
Charith Abhayaratne, The Univ. of Sheffield (United Kingdom)


Published in SPIE Proceedings Vol. 7248:
Wavelet Applications in Industrial Processing VI
Frederic Truchetet; Olivier Laligant, Editor(s)

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