A robust watermarking technique for copyright protection of digital images

Authors:
Kuo-Ming Hung;Yao-Tien Wang;Cheng-Hsiang Yeh
Affiliations:
Department of Information Management, Kainan University, Taoyuan, Taiwan;Department of Information Management, Kainan University, Taoyuan, Taiwan;Department of Information Management, Kainan University, Taoyuan, Taiwan
Venue:
CEA'07 Proceedings of the 2007 annual Conference on International Conference on Computer Engineering and Applications
Year:
2007

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Abstract

Digital watermarking technique mainly applied protection in intellectual property copyrights. It is to join the data of the one intellectual property rights into the digital media of the different pattern by some procedures of processing. This includes text file, the static state image, the dynamic state image, voice signal, and so on. This paper proposes a robust watermark system that utilizes good geometry invariant characteristic of Zernike moment and Comparison of the average energy of wavelet packet. The experiments prove that the method is robust against scaled, rotated, blurred, cut and jpeg attacks. Particularly, the use of the Zernike moment improves the robustness against geometric attacks greatly.