Embedding distortion modeling for non-orthonormal wavelet based watermarking schemes

BHOWMIK, Deepayan and ABHAYARATNE, Charith (2009). Embedding distortion modeling for non-orthonormal wavelet based watermarking schemes. In: TRUCHETET, Frederic and LALIGANT, Olivier, (eds.) Wavelet Applications in Industrial Processing VI. SPIE Proceedings, 7248 (7248). SPIE, 72480K.

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Official URL: https://www.spiedigitallibrary.org/conference-proc...
Link to published version:: https://doi.org/10.1117/12.810719
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    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.

    Item Type: Book Section
    Departments - Does NOT include content added after October 2018: Faculty of Science, Technology and Arts > Department of Computing
    Identification Number: https://doi.org/10.1117/12.810719
    Page Range: 72480K
    Depositing User: Deepayan Bhowmik
    Date Deposited: 26 Jan 2018 09:52
    Last Modified: 26 Jan 2018 09:52
    URI: http://shura.shu.ac.uk/id/eprint/14089

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