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Robust watermarking procedure based on JPEG discrete cosine transform image compression

[+] Author Affiliations
Srdjan Stanković

University of Montenegro, Electrical Engineering Department, 81000 Podgorica, Montenegro

Irena Orović

University of Montenegro, Electrical Engineering Department, 81000 Podgorica, Montenegro

Nikola Žarić

University of Montenegro, Electrical Engineering Department, 81000 Podgorica, Montenegro

J. Electron. Imaging. 17(4), 043001 (October 03, 2008). doi:10.1117/1.2981832
History: Received February 22, 2008; Revised July 11, 2008; Accepted July 14, 2008; Published October 03, 2008
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A new procedure for watermarking in the 8×8 block-based discrete cosine transform (DCT) domain (used for JPEG compression) is proposed. The influence of JPEG quantization on watermarked coefficients and on watermark is considered. The criterion for coefficients selection is derived, providing robustness for an arbitrary quantization degree. The modified form of coefficients probability density function (pdf) leads to the class of modified optimal detectors. Theoretical results are illustrated on various examples. Efficiency of the proposed procedure is shown in the presence of different quantization degrees, and other common attacks.

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Citation

Srdjan Stanković ; Irena Orović and Nikola Žarić
"Robust watermarking procedure based on JPEG discrete cosine transform image compression", J. Electron. Imaging. 17(4), 043001 (October 03, 2008). ; http://dx.doi.org/10.1117/1.2981832


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