Results 21 to 30 of about 13,731 (261)
A novel image encryption scheme based on 3D bit matrix and chaotic map with Markov properties
Egyptian Informatics Journal, 2019 Based on 3D cat map, reverse 3D cat map and an improved class of chaotic maps with Markov properties, an effective bit-level image encryption scheme is proposed.
Meng Ge, Ruisong Ye
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A Novel Chaotic Map and an Improved Chaos-Based Image Encryption Scheme
The Scientific World Journal, 2014 In this paper, we present a novel approach to create the new chaotic map and propose an improved image encryption scheme based on it. Compared with traditional classic one-dimensional chaotic maps like Logistic Map and Tent Map, this newly created ...
Xianhan Zhang, Yang Cao
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2D Logistic-Modulated-Sine-Coupling-Logistic Chaotic Map for Image Encryption
IEEE Access, 2019 Due to the significant properties of unpredictability, ergodicity, and initial state sensitivity, chaotic system is widely used as a useful tool in image encryption.
Hegui Zhu, Yiran Zhao, Yujia Song
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Entropy, 2022 With the advancement of technology worldwide, security is essential for online information and data. This research work proposes a novel image encryption method based on combined chaotic maps, Halton sequence, five-dimension (5D) Hyper-Chaotic System and
Sakshi Patel, Thanikaiselvan Veeramalai
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Chaotic mixing in a torus map [PDF]
Chaos: An Interdisciplinary Journal of Nonlinear Science, 2003 The advection and diffusion of a passive scalar is investigated for a map of the 2-torus. The map is chaotic, and the limit of almost-uniform stretching is considered. This allows an analytic understanding of the transition from a phase of constant scalar variance (for short times) to exponential decay (for long times). This transition is embodied in a
Thiffeault, JL, Childress, S
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Multidimensional Discrete Chaotic Maps
Frontiers in Physics, 2022 In this paper, the general concept of multidimensional discrete maps is presented. Moreover, new and fundamental results show the invariance of the bifurcation points from periodic to chaotic behavior. Numerical examples regarding the multidimensional cases of the logistic map, the complex-valued Ikeda map, and the multivariable Henon map are reported.
Maide Bucolo +6 more
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A 2D Chaotic Oscillator for Analog IC
IEEE Open Journal of Circuits and Systems, 2022 In this paper, we have proposed the design of an analog two-dimensional (2D) discrete-time chaotic oscillator. 2D chaotic systems are studied because of their more complex chaotic behavior compared to one-dimensional (1D) chaotic systems.
Partha Sarathi Paul +3 more
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Speech encryption using chaotic shift keying for secured speech communication
EURASIP Journal on Audio, Speech, and Music Processing, 2017 This paper throws light on chaotic shift keying-based speech encryption and decryption method. In this method, the input speech signals are sampled and its values are segmented into four levels, namely L 0, L 1, L 2, and L 3. Each level of sampled values
P. Sathiyamurthi, S. Ramakrishnan
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Chaotically driven sigmoidal maps [PDF]
Stochastics and Dynamics, 2017 We consider skew product dynamical systems [Formula: see text] with a (generalized) baker transformation [Formula: see text] at the base and uniformly bounded increasing [Formula: see text] fibre maps [Formula: see text] with negative Schwarzian derivative. Under a partial hyperbolicity assumption that ensures the existence of strong stable fibres for
Gerhard Keller, Atsuya Otani
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Leading Ruelle resonances of chaotic maps [PDF]
Physical Review E, 2000 The leading Ruelle resonances of typical chaotic maps, the perturbed cat map and the standard map, are calculated by variation. It is found that, excluding the resonance associated with the invariant density, the next subleading resonances are, approximately, the roots of the equation $z^4= $, where $ $ is a positive number which characterizes the ...
Blum, Galya, Agam, Oded
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