A Color Image Watermarking Algorithm Based on LWT and SVD
Wang Jia-xi · Jisuanji fangzhen · 2014
In order to improve invisibility and robustness of the digital image watermarking,this paper proposed a color image watermarking algorithm based one lifting wavelet transform and singular value decomposition. Firstly, green component of the color image was extracted and decomposed by lifting wavelet transform,and then the Radon moment invariant was computed to form a watermarking system. Lastly,the transformation of the intermediate frequency component was decomposed by singular value decomposition and chaos after scrambling watermark image was embed into the singular value to get the colore watermarking images. The simulation results show that this proposed algorithm has not only the good invisibility,but also very good robustness to all kinds of attacks.