Analysis of ISB watermarking model: block based methods vs embedding repetition methods
Proceedings of the 9th International Conference on Advances in Mobile Computing and Multimedia
Journal of Visual Communication and Image Representation
Robust color image watermarking using LS-SVM correction
ISNN'12 Proceedings of the 9th international conference on Advances in Neural Networks - Volume Part II
A robust blind color image watermarking in quaternion Fourier transform domain
Journal of Systems and Software
Geometric attack resistant image watermarking based on MSER
Frontiers of Computer Science: Selected Publications from Chinese Universities
Bayesian Segmentation Based Local Geometrically Invariant Image Watermarking
Fundamenta Informaticae
Full 4-D quaternion discrete Fourier transform based watermarking for color images
Digital Signal Processing
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Geometric distortions are generally simple and effective attacks for many watermarking methods. They can make detection and extraction of the embedded watermark difficult or even impossible by destroying the synchronization between the watermark reader and the embedded watermark. In this paper, we propose a new watermarking approach which allows watermark detection and extraction under affine transformation attacks. The novelty of our approach stands on a set of affine invariants we derived from Legendre moments. Watermark embedding and detection are directly performed on this set of invariants. We also show how these moments can be exploited for estimating the geometric distortion parameters in order to permit watermark extraction. Experimental results show that the proposed watermarking scheme is robust to a wide range of attacks: geometric distortion, filtering, compression, and additive noise.