A robust image watermarking scheme in hybrid transform domains resisting to rotation attacks

摘要

Image watermarking provides a promising solution to digital media copyright protection. However, the robust performance of the watermarking scheme should be carefully considered. In this paper, we propose a robust image watermarking scheme, which shows good robustness against common watermarking attacks and rotation attacks. The hybrid method based on discrete wavelet transform (DWT) and discrete cosine transform (DCT) helps concentrate the image energy and improve the robust performance of the image watermarking scheme. Besides, the employment of singular value decomposition (SVD) makes the proposed scheme more robust against rotation attack. We conduct experiments on the visual quality and the robustness of our watermarking scheme. The experimental results are generally satisfactory.