Abstract. With the development of the internet and computer technology, the image protection becomes more and more important. In order to strengthen the robust and safety of the image protection , this paper mainly improve the encryption algorithm of harsh sequence and propose the theory of using chaos theory to encrypt the image protection through analyzing the basic feature of the chaos theory. It also proposes new image protection solution by using encryption matrix methods, Pseudo random sequence block and image scrambling method in the image protection experiment. The experiment shows that these methods have better usefulness, safety and versatility which can satisfy the needs of image data encryption and image safety. IntroductionWith the spread and application of computer and internet technique, the information safety becomes the focus of the people. Image protection is one of important issue resulting from the development of information era
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