Research On Multimedia Disguise Technology

"Encrypting the secret with no secret message appears" is the better request of currently secret communication. Digital Steganography is one of the important techniques in this field. In Computer network, as one of the main information carrier, multimedia were dealt with both as "cover" and "object" of digital Steganography. The details of the thesis are as follows:Based on complex number system, the novel disguise method of multimedia is proposed. On the basis of complex number system, this thesis tries to apply it to multimedia disguise, include digital image, text, sound, video and so on, By much test data, validate and verify validity of these methods.The digital watermark is an important branch of the information disguise technology. Its appearance is chiefly for solving the copyright protection matter of the multi-media product in network..Based on a class of new orthogonal function system (V System), a novel digital watermarking method is proposed. Based on the property of uniformity of the corresponding Fibonacci transformation, the watermarking can be distributed uniformly in the host image. Experiments shows that the algorithm has more advantages than what is suggested in reference. The algorithm can endure severe attacks such as extreme noise level, very high loss in its data or data packets.