Algorithm of spread spectrum watermarking based on PSNR in DCT domain
Yong-Gang Fu · Computer Engineering and Applications Journal · 2009
Digital watermarking techniques have been considered as an effective solution of information hiding and the protection of copyright.This paper analyses how to estimate the embedding strength of multi-watermarking according to the PSNR of the watermarked digital image so as to exert reasonable control of the watermarking embedding,and presents a Spread Spectrum Watermarking formula of the embedding strength based on PSNR.The experimental results show that the formula of the embedding strength has minor errors,and the proposed scheme has good robustness.