Digital encrypt watermarking based on wavelet transform

Watermarking encryption is an effective technique in the copyright protection of digital media. This paper focuses on the watermarking encryption and proposes a digital watermarking encryption algorithm which is based on Haar wavelet transform. In the algorithm, the watermark is pretreated with Arnold image transform according to the characteristic of the human vision system. It improves the security and the invisibility of watermark. Simulation results show that the algorithm is an effective encryption method and easy to be achieved.