A semi-fragile digital watermarking algorithm in wavelet transform domain based on Arnold transform

Digital watermarking technique is one of most important methods in information hiding and IPR (Intelligence Properties Right) protection and authentication. The aim of the paper is study on a new semi-fragile digital watermarking algorithm. The copyright information is firstly made chaos by Arnold transform, then self-adaptive imbedded into host image based on calculating the adjacent wavelet coefficients by exploiting the characteristics of HVS (Human Visual System). The various attacks are applied to the image embedded the digital watermark, the results show that the algorithm has robustness resisting conventional compression such as JPEG and fragile resisting hostility attacks and falsification, as a result of achieving a good semi-fragile watermarking algorithm.