A novel watermarking algorithm based on SVD and zernike moments

Authors:
Haifeng Li;Shuxun Wang;Weiwei Song;Quan Wen
Affiliations:
Institute of Communication Engineering, Jilin University, Changchun, China;Institute of Communication Engineering, Jilin University, Changchun, China;Institute of Communication Engineering, Jilin University, Changchun, China;Institute of Communication Engineering, Jilin University, Changchun, China
Venue:
ISI'05 Proceedings of the 2005 IEEE international conference on Intelligence and Security Informatics
Year:
2005

Citing 3
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Abstract

A robust image watermarking technique is proposed in this paper. The watermarked image is obtained by modifying the maximum singular value in each image block. The robustness of the proposed algorithm is achieved from two aspects: the stability of the maximum singular values and preprocessing before watermark extraction. Zernike moments are used to estimate the rotation angle, and the translation and scaling distortions are corrected by geometric moment methods. Experimental results show that this algorithm makes a trade-off among the imperceptibility, robustness and capacity.