Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Convolution: Math, Graphics, and Discrete Signals

Convolution: Math, Graphics, and Discrete Signals

In any LTI (Linear Time-Invariant) system, the convolution of two signals is denoted using a convolution operator, assuming all initial conditions are zero. The convolution integral can be divided into two parts: the zero-input or natural response and the zero-state or forced response, with t0 indicating the initial time.
To simplify the convolution integral, it is assumed that both the input signal and impulse response are zero for negative time values. The graphical convolution process...

Phasor Arithmetics

Phasor Arithmetics

Phasors and their corresponding sinusoids are interrelated, offering unique insights into the behavior of alternating current (AC) circuits. One way to understand this relationship is through the operations of differentiation and integration in both the time and phasor domains.
When the derivative of a sinusoid is taken in the time domain, it transforms into its corresponding phasor multiplied by j-omega (jω) in the phasor domain, where j is the imaginary unit, and ω is the angular...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Classification of bacterial images obtained optically using some pre-trained models.

Journal of microbiological methods·2026

Same author

Direct detection and classification of E. coli and fecal streptococci using an optical water droplet method and convolutional neural networks.

Applied optics·2025

Same author

Experimental implementation of chaos-based video encryption using visible light communication technology.

Applied optics·2025

Same author

Expected and unexpected routes to synchronization in a system of swarmalators.

Physical review. E·2025

Same author

Nonlinear dynamics of two electromechanical arms acting discontinuously on a balloon under the action of a sinusoidal excitation.

Heliyon·2024

Same author

Multistability, relaxation oscillations, and chaos in time-delayed optoelectronic oscillators with direct laser modulation.

Optics letters·2024

Search research articles

Related Experiment Video

Updated: Sep 11, 2025

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

Image encryption based on a hyperchaotic hyperbolic optoelectronic oscillator and the Tetris game.

William Nodem Atchoffo, Jimmi Hervé Talla Mbé, Robert Tchitnga

|August 12, 2025

Summary

This study introduces a novel image encryption method using a hyperchaotic hyperbolic optoelectronic oscillator and Tetris game principles. The technique offers efficient and secure data protection against various attacks.

More Related Videos

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

Related Experiment Videos

Last Updated: Sep 11, 2025

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

Area of Science:

Applied Physics
Information Security
Chaos Theory

Background:

Hyperchaotic systems exhibit complex dynamics suitable for cryptography.
Image encryption requires robust and efficient algorithms to protect sensitive data.
Existing methods may lack efficiency or security against advanced attacks.

Purpose of the Study:

To propose a novel image encryption scheme.
To leverage hyperchaotic behavior for secure data transmission.
To enhance image encryption efficiency and security.

Main Methods:

Utilizing a hyperchaotic hyperbolic optoelectronic oscillator to generate a chaotic sequence.
Implementing a simultaneous permutation-diffusion process with pixel rewriting and channel permutation.
Employing a Tetris-inspired scrambling technique for pixel permutation.
Generating a SHA-256 dependent hyperchaotic key stream.

Main Results:

Demonstrated hyperchaos in a hyperbolic optoelectronic oscillator across a wide parameter range.
Achieved efficient image encryption through simultaneous permutation and diffusion.
The proposed scheme showed superior efficiency compared to existing methods.
The encryption technique proved secure against common attack strategies.

Conclusions:

The proposed hyperchaotic system and Tetris-inspired method provide an effective image encryption solution.
The scheme offers a strong balance between efficiency and security.
This approach contributes a novel technique to the field of image cryptography.