Public watermarking algorithm based on the polarity of DCT coefficients

• Autorzy: Yu P. , Liu B.
• Języki publikacji: EN

Abstrakty

EN

This paper presents a novel public watermarking algorithm based on the AC coefficients distribution properties of an image's DCT transform. This method uses the signs of the DCT coefficients to represent the bit 1 and 0 respectively. Furthermore, the parameters of this scheme can be calculated since we analyze the round-off errors caused by storing a watermarked image. The experiment results show that the algorithm is effective and robust to common image processing operations, such as JPEG lossy compression, Gaussian noise attack, cropping, lowpass filter and histogram equalization.

Słowa kluczowe

EN

digital watermarking; DCT; Roundoff error

• Wydawca: Instytut Telekomunikacji i Informatyki Uniwersytetu Technologiczno-Przyrodniczego w Bydgoszczy
• Czasopismo: Image Processing & Communications
• Rocznik: 2006
• Tom: Vol. 11, no 2
• Strony: 63--73
• Opis fizyczny: Bibliogr. 12 poz., rys.

Twórcy

autor

Yu P.

autor

Liu B.

• School of Information, Yunnan University, Kunming, Yunnan, China,

Bibliografia

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