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Discrete Fourier transform–based watermarking method with an optimal implementation radius

[+] Author Affiliations
Ante Poljicak

University of Zagreb, Faculty of Graphic Arts, Zagreb, 10000 Croatia

Lidija Mandic

University of Zagreb, Faculty of Graphic Arts, Zagreb, 10000 Croatia

Darko Agic

University of Zagreb, Faculty of Graphic Arts, Zagreb, 10000 Croatia

J. Electron. Imaging. 20(3), 033008 (August 16, 2011). doi:10.1117/1.3609010
History: Received October 12, 2010; Revised March 31, 2011; Accepted June 17, 2011; Published August 16, 2011; Online August 16, 2011
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In this paper, we evaluate the degradation of an image due to the implementation of a watermark in the frequency domain of the image. As a result, a watermarking method, which minimizes the impact of the watermark implementation on the overall quality of an image, is developed. The watermark is embedded in magnitudes of the Fourier transform. A peak signal-to-noise ratio is used to evaluate quality degradation. The obtained results were used to develop a watermarking strategy that chooses the optimal radius of the implementation to minimize quality degradation. The robustness of the proposed method was evaluated on the dataset of 1000 images. Detection rates and receiver operating characteristic performance showed considerable robustness against the print-scan process, print-cam process, amplitude modulated, halftoning, and attacks from the StirMark benchmark software.

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Citation

Ante Poljicak ; Lidija Mandic and Darko Agic
"Discrete Fourier transform–based watermarking method with an optimal implementation radius", J. Electron. Imaging. 20(3), 033008 (August 16, 2011). ; http://dx.doi.org/10.1117/1.3609010


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