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Related Concept Videos

Encoding01:19

Encoding

Information enters the brain through encoding, which is the input of information into the memory system. Once sensory information is received from the environment, the brain labels or codes it. The information is then organized with similar information and connected to existing concepts. Encoding occurs through automatic processing and effortful processing.
Automatic processing involves the encoding of details like time, space, frequency, and the meaning of words, usually done without conscious...
Sequence Networks of Rotating Machines01:24

Sequence Networks of Rotating Machines

A Y-connected synchronous generator, grounded through a neutral impedance, is designed to produce balanced internal phase voltages with only positive-sequence components. The generator's sequence networks include a source voltage that is exclusively in the positive-sequence network. The sequence components of line-to-ground voltages at the generator terminals illustrate this configuration.
Zero-sequence current induces a voltage drop across the generator's neutral impedance and other...
Routh-Hurwitz Criterion II01:19

Routh-Hurwitz Criterion II

In the application of the Routh-Hurwitz criterion, two specific scenarios can arise that complicate stability analysis.
The first scenario occurs when a singular zero appears in the first column of the Routh table. This situation creates a division by zero issues. To resolve this, a small positive or negative number, denoted as epsilon (∈), is substituted for the zero. The stability analysis proceeds by assuming a sign for ∈. If ∈ is positive, any sign change in the first column of the Routh...
Maxam-Gilbert Sequencing01:05

Maxam-Gilbert Sequencing

In the same year as the discovery of the Sanger sequencing method, another group of scientists, Allan Maxam and Walter Gilbert, demonstrated their chemical-cleavage method for DNA sequencing. The Maxam-Gilbert method relies on using different chemicals that can cleave the DNA sequence at specific sites, the separation of resulting DNA fragments of variable size using electrophoresis, and deciphering the DNA sequence from the resulting gel bands.
Challenges of the Maxam-Gilbert Method
The...
Routh-Hurwitz Criterion I01:15

Routh-Hurwitz Criterion I

Consider an electrical power grid, where stability is essential to prevent blackouts. The Routh-Hurwitz criterion is a valuable tool for assessing system stability under varying load conditions or faults. By analyzing the closed-loop transfer function, the Routh-Hurwitz criterion helps determine whether the system remains stable.
To apply the Routh-Hurwitz criterion, a Routh table is constructed. The table's rows are labeled with powers of the complex frequency variable s, starting from the...
Computed Tomography01:10

Computed Tomography

Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
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Related Experiment Video

Updated: Jun 11, 2026

Quantifying Intermembrane Distances with Serial Image Dilations
07:45

Quantifying Intermembrane Distances with Serial Image Dilations

Published on: September 28, 2018

Double image encryption by using iterative random binary encoding in gyrator domains.

Zhengjun Liu1, Qing Guo, Lie Xu

  • 11 Department of Automation Measurement and Control Engineering, Harbin Institute of Technology, Harbin 150001, PR China. zjliuv@gmail.com

Optics Express
|July 1, 2010
PubMed
Summary
This summary is machine-generated.

This study introduces a novel double image encryption method using random binary encoding and gyrator transform for enhanced security. The algorithm utilizes chaotic maps and gyrator transform parameters as keys for robust data protection.

Related Experiment Videos

Last Updated: Jun 11, 2026

Quantifying Intermembrane Distances with Serial Image Dilations
07:45

Quantifying Intermembrane Distances with Serial Image Dilations

Published on: September 28, 2018

Area of Science:

  • Computer Science
  • Cryptography
  • Information Security

Background:

  • Digital image security is crucial in the digital age.
  • Existing encryption methods face challenges in robustness and security against sophisticated attacks.
  • The need for advanced encryption techniques for sensitive image data is growing.

Purpose of the Study:

  • To develop and demonstrate a secure double image encryption algorithm.
  • To enhance image encryption security using random binary encoding and gyrator transform.
  • To explore the use of chaotic maps for generating secure keys.

Main Methods:

  • Two secret images are combined as the real and imaginary parts of a complex function.
  • A chaotic map generates a random binary matrix for data scrambling.
  • The gyrator transform is applied, with parameters serving as encryption keys.
  • An iterative structure enhances the encryption algorithm's security.

Main Results:

  • Numerical simulations confirm the algorithm's effectiveness in encrypting double images.
  • The proposed method demonstrates high security due to the combination of techniques.
  • The iterative structure and key-dependent operations contribute to algorithm robustness.

Conclusions:

  • The proposed double image encryption algorithm offers a secure and effective solution.
  • The integration of random binary encoding and gyrator transform provides a strong cryptographic framework.
  • The algorithm's performance is validated through simulations, highlighting its potential for practical applications.