Digital Image Watermarking Technology Based On Chaotic Sequence

Along with the booming development of computer multimedia informationtechnology and network communication technology, digital multimedia informationstorage, copy and communication also become more and more convenient and quick.However, a second question is very serious. For example, work is easier, tamper withthe infringement is more convenient. So a urgent need to approve the problem is howto protect copyright in the network environment implementation effectively. For this,people put forward the digital watermarking technique. In this paper, we research andanalyze the problems of the digital image watermarking and do some work as follows:First we propose an image watermarking algorithm, it is basing on chaos andscrambling DCT domain, the basic idea is using Arnold scrambling technology toscramble meaningful image watermark scrambling, and using the Logistic chaostechnology to produce a chaotic sequence and join Arnold scrambling watermarkimage in order to improve the allowance of watermarking robustness, once again aboutthe carrier image of the discrete cosine transform(DCT), will create the watermarkimage to join to transform the block after the watermark information to the imageblock inverse transform, can get to join the image watermark. At the same time thevalidity of the algorithm is verified by experiment.Next we propose an image watermarking algorithm based on the chaos andscrambling DWT domain, the basic idea is using Arnold scrambling technology toscramble meaningful image watermark scrambling,, and using the Logistic chaostechnology to produce a chaotic sequence to join Arnold scrambling watermark image,after the carrier image wavelet transform, the watermark image will create added totransform the block after the wavelet transform for the generation encryption image. Atthe same time the validity of the algorithm is verified by experiment.