Multiple transform domain watermarking algorithm based on NSCT decomposition DCT transform and SVD decomposition
Yong Sheng Zhao · Computer Engineering and Applications Journal · 2013
This paper proposes a new algorithm based on Nonsampling Contourlet Transform(NSCT) and Discrete Cosine Transformation(DCT)to improve the watermarking's anti-rotation attack robustness and the embedding quantity. It transforms the image with NSCT, then does the low-frequency coefficients with DCT, decomposes the low-frequency coefficients of DCT domain with Singular Value Decomposition(SVD). Experimental results show that the algorithm has a good robustness in filter and rotation, and extracts the watermarking very well in rotation attack especially.