Autonomous jerk oscillator with sine nonlinearity and logistic map for sEMG encryption

Ramakrishnan, Balamurali; Welba, Colince; Cheage, André Chamgoué; Karthikeyan, Anitha; Kingni, Sifeu Takougang

doi:10.1088/1402-4896/ac88a2

Cited by 3 publications

(5 citation statements)

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“…where k is a scalar constant, a function of r . 0 In RRC, (7) is approximated by ignoring this k which makes the minimization problem solvable using iteratively reweighted l 2 -regularized coding, where W is iteratively modified using (8). Therefore, the locally approximated version of (7) becomes:…”

Section: Preprocessingmentioning

confidence: 99%

“…There are mainly two types of interaction modalities for hand gesture data acquisition i.e., wearable sensorbased and contactless sensor-based. Data gloves, magnetic trackers, inertial measurement units with gyroscopes and accelerometers, surface electromyography (sEMG) [7,8], etc, are a few of the popularly used wearable accessories for recording hand and finger movements with varying gestures [2,9]. These types of wearable sensors can provide reliable features in unstructured environments.…”

Section: Introductionmentioning

confidence: 99%

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Weight thresholded regularized robust coding for vision sensing-based hand gesture detection in collaborative robotics

Ghosh,

Paral,

Chatterjee

2023

Phys. Scr.

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Vision sensing-based hand gesture recognition is considered an important contemporary research problem of collaborative robotics in a human-robot coexisting environment. The problem becomes more complex in challenging environments, where a robot needs to correctly recognize a human gesture to perform navigation or some other designated job, even in the presence of poor illumination conditions, occlusion, etc. This work proposes a novel approach of successfully utilizing regularized robust coding (RRC)-based models to solve such hand gesture detection problems in real-life, challenging situations. The RRC model is used for robust regression of a signal or image and is known as an improvement over the classical sparse representation-based classification (SRC) model. In this work, we propose three novel variants of weight thresholding mechanism in conjunction with RRC (namedWTRRC algorithms) which essentially employ more error-tolerant concepts of logistic functions for weight update, when the dictionary is formed by real-world, photometrically irregular hand gesture images. Extensive case studies in real-world environments (i) with poor illumination, and (ii) with both poor illumination and occlusions firmly establish superior performances of the proposed WTRRC variants compared to other state-of-the-art algorithms in such collaborative robotics problems.

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Section: Preprocessingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Weight thresholded regularized robust coding for vision sensing-based hand gesture detection in collaborative robotics

Ghosh,

Paral,

Chatterjee

2023

Phys. Scr.

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“…where x, y, and z are state variables, a is constant parameter, and dots represent time derivatives. There exist many dynamical models in various fields [16][17][18][19][20][21][22][23]. Huang and Bae [16] presented the chaotic FO love model.…”

Section: Introductionmentioning

confidence: 99%

“…The chaotic FO Romeo and Juliet with an external force or external environment was studied [17]. Different cases of image encryption for chaotic dynamical systems were investigated [18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

On real and complex dynamical models with hidden attractors and their synchronization

2023

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In this work, we propose three chaotic (or hyperchaotic) models. These models are real or complex with one stable equilibrium point (hidden attractor). Based on a modified Sprott E model, three versions were introduced: the complex integer order, the real fractional order, and the complex fractional order. The basic properties of these models have been studied. We discover that the complex integer-order version has chaotic and hyperchaotic multi-scroll hidden attractors (MSHAs) by computing Lyapunov exponents (LEs). By making a small change to a model parameter, different MSHA values can be produced for this version. Our complex version's dynamics are richer than the integer version in [1]. The dynamics of the real fractional version are investigated through a bifurcation diagram and LEs. It has chaotic hidden attractors for various fractional-order q values. Through varying the model parameters of the complex fractional-order (FO) version, different numbers of chaotic MSHAs can be generated. Due to the complex dynamic behaviours of the MSHAs, these models may have several applications in physics, secure communications and image encryption. A new kind of combination synchronization (CS) between one integer-order drive model and two FO response models with different dimensions is proposed. The tracking control method is used to investigate a scheme for this type of synchronization. As an example, we used our three models to test the validity of this scheme, and an agreement between the analytical and numerical results was found.

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“…Jerk systems with chaotic attractors have several applications such as circuits [18][19][20], memristors [21], encryption [22,23], etc.…”

Section: Introductionmentioning

confidence: 99%

A Novel 3-D Jerk System, Its Bifurcation Analysis, Electronic Circuit Design and a Cryptographic Application

Vaidyanathan,

Kammogne,

Tlelo-Cuautle

et al. 2023

Electronics

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This paper introduces a new chaotic jerk system with three cubic nonlinear terms. The stability properties of the three equilibrium points of the proposed jerk system are analyzed in detail. We show that the three equilibrium points of the new chaotic jerk system are unstable and deduce that the jerk system exhibits self-excited chaotic attractors. The bifurcation structures of the proposed jerk system are investigated numerically, showing period-doubling, periodic windows and coexisting bifurcations. An electronic circuit design of the proposed jerk system is designed using PSPICE. As an engineering application, a new image-encryption approach based on the new chaotic jerk system is presented in this research work. Experimental results demonstrate that the suggested encryption mechanism is effective with high plain-image sensitivity and the reliability of the proposed chaotic jerk system for various cryptographic purposes.

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Autonomous jerk oscillator with sine nonlinearity and logistic map for sEMG encryption

Cited by 3 publications

References 50 publications

Weight thresholded regularized robust coding for vision sensing-based hand gesture detection in collaborative robotics

Weight thresholded regularized robust coding for vision sensing-based hand gesture detection in collaborative robotics

On real and complex dynamical models with hidden attractors and their synchronization

A Novel 3-D Jerk System, Its Bifurcation Analysis, Electronic Circuit Design and a Cryptographic Application

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