Image Information Hiding In Digital Watermark Technology

With the rapid progress of Internet ,digital media has become a main way to information dissemination. People can acquire a wide range of multimedia data through Internet easily. While many multimedia information security problems emerge as negative effects of the above convenience, including illegal copying, forgery, tampering, etc. Thus how to protect multimedia data from violation has become an important issue in information security field. As a main application of information hiding technique to multimedia copyright protection, the digital watermarking technique has been proposed as a viable solution to the copyright protection and authentication of multimedia data in a networked environment science it makes it possible to identify the author, owner, distributor or authorized consumer of multimedia data. So it has drawn extensive attention in recent years and has been widely applied.Digital watermark is in essence a kind of information hiding, but its purpose is to secure communication, but to indicate some information carrier itself, such as multimedia information of creators, copyright information, using digital watermarking, still can track illegal spread multimedia products and diffusion, crack down on piracy. This paper uses the singular value decomposition and combining wavelet transform technology for hiding, first will hide image scrambling technology using diamond scrambling, the image enhancement secret not visible, choose different matrix, with the template matrix hashing template, the effect is bigger, then using wavelet decomposition technique, the low frequency and high frequency watermark image of energy coefficients, mainly concentrated in the low frequency part, so it will be a secret image hidden in the low frequency part, the carrier image watermark image that can improve robustness, using the singular value decomposition (SVD) will be a secret image R,G,B three layers of the carrier image hidden in respectively, R,G,B three layers, the experiments show that the method has good robustness against attack ability, improve the embedded information.