A Image Digital Watermarking based on DWT in Invariant Wavelet Domain

Surviving geometric attacks in image watermarking is considered to be of great importance. In the face of geometrical attacks, all shortcomings of almost all digital watermarking algorithms have been exposed. This paper presents an improved invariant wavelet that is better than the bilinear interpolation, and designs a novel blind image watermarking algorithm of scalar costa system based on DWT in the rotation- and scale-and translation-(RST) moment invariant wavelet, i.e. RSTMIW domain. The experiments show that this novel algorithm is robust against RST geometrical, filter and noise attacks, however, sensitive to local crop attacks.