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Attacking Phase Shift Keying Based Watermarking Jeng-Shyang PAN Chuang LIN Publication IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Vol.E90-A No.1 pp.305-306 Publication Date: 2007/01/01 Online ISSN: 1745-1337 DOI: 10.1093/ietfec/e90-a.1.305 Print ISSN: 0916-8508 Type of Manuscript: LETTER Category: Image Keyword: digital watermarking, phase perturbation attacking, Full Text: PDF(311.7KB)>>
Summary: The letter describes a phase perturbation attack to the Discrete Fourier Transform (DFT) and Phase Shift Keying (PSK) based watermarking scheme which is proposed in [3]. In that paper the watermark information is embedded in the phase of the DFT coefficients. But this kind of PSK based watermarking scheme is very vulnerable to the phase perturbation attack, when some noise is added on the phase of the DFT coefficients, the watermark can't be correctly extracted anymore, while the quality degradation of the attacked watermarked image is visually acceptable. | ||||||||||
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