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To find new algorithms with good security, the authors proposed a new encryption algorithm based on dual chaotic systems. Firstly, the block of each pixel in the carrier image is determined with the Arnold mapping. And then with the chaotic sequence generated by Lorenz mapping, the specific location of each pixel in the corresponding block is determined. Finally, the pixels are hidden into the appropriate...
This paper presents a control scheme for the synchronization of chaotic systems when the same chaotic system with the different initial conditions. For a given chaotic system, an adaptive observer-based response can be constructed to synchronize the drive system. Moreover this scheme uses the nonlinear controller which is achieved the global synchronization and the proposed controller doesnpsilat...
Based on observer, an adaptive controller with parameters identification for a class of chaotic systems with unknown parameters is proposed in this paper. The states of chaotic system are successfully estimated by a nonlinear observer with the proposed control and unknown parameters are also to be adapted to their values. Linear matrix inequality (LMI) approach is used to design the observer-based...
Generalized synchronization of different chaotic systems is investigated in this letter. Based on output feedback by selecting appropriate constant matrix K, the controller is proposed to control the states of the response system to be those of the drive system even though their orders are different. Two numerical simulation examples: hyper chaotic Chen system and the generalized Lorenz system; hyper...
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