Chaotic image encryption algorithm research based on Contourlet transformation

With the development of Internet technology, Internet security issues become increasingly prominent. People transfer a large amount of digital images on the Internet every day, in order to protect the security of the digital image, the most direct and effective way is to encrypt the digital image. Chaotic encryption system with natural characteristics, chaotic image encryption can effectively protect the safety of the digital image. This paper describes the chaotic image encryption algorithm based on Contourlet transformation, researches the implementation of the algorithm, the matlab simulation experiments of the algorithm explain the security of the algorithm.