Gabased Digital Image Watermarking For Enhanced Robustness and Imperceptibility
R. Surya Prakasa Rao, P. Rajesh Kumar · IOSR Journal of Computer Engineering · 2017
The goal of image watermarking is to hide the specific information into host image and the presence of the watermark cannot be realized by human visual.The watermarking algorithm design should meet the criteria such as the rightful ownership protection, robustness against the image processing attacks and watermark imperceptibility.In this paper an optimal watermarking scheme based on singular value decomposition (SVD) and Discrete wavelet transform (DWT) using multi-objective genetic algorithm (GA) optimization is presented.The singular values of the watermark are embedded in a detail sub-band of host image after third level approximation.The GA algorithm is used to achieve the highest possible robustness and transparency.Experimental results gives improved performance in term of transparency and robustness after attacks by the proposed method compared to other existing methods.