A Robust Algorithm of Digital Image Watermarking Based on Discrete Wavelet Transform

In this paper, a robust algorithm of digital image watermarking based on discrete wavelet transform is introduced It uses blind watermarking technique. Digital image watermarking is one such technology that has been developed to protect digital images from illegal manipulations. In particular, digital image watermarking algorithms which are based on the discrete wavelet transform have been widely recognized to be more prevalent than others. This is due to the wavelets\u27 excellent spatial localization, frequency spread, and multi-resolution characteristics, which are similar to the theoretical models of the human visual system