Study on algorithm of masking digital watermarking in wavelet transform domain based on chaos encryption and arnold transform

Digital watermarking technique is one of most important methods in information hiding and IPR (Intelligence Properties Right) protection and authentication. An algorithm is proposed based on chaos encryption and Arnold transform in the paper. The principle is that the digital watermarking produced by Logistic or Chebyshev chaos model is made “and or” operation to significant binary image watermarking by Arnold transform scrambling to form secret watermarking, which then is embedded into carrier image in wavelet transform domain. The principle and process of watermarking creating, embedding and retrieving are given in the paper. The experimental results show that the scheme has a good at visual invisibility and robustness against attack for hiding secret image information.