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Related Concept Videos

Blinding01:11

Blinding

Blinding is a commonly used method of not telling participants which treatment a subject is receiving. Blinding is a critical part of a randomized control trial or RCT. It reduces the bias that affects the results. In an RCT, blinding is used in the form of a placebo. A placebo effect occurs when untreated subjects falsely believe they have received the treatment and report improved symptoms. A placebo or a dummy treatment is administered to subjects to negate the bias caused by such an effect.
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...
The Electrical Double Layer01:30

The Electrical Double Layer

In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...
The Phase Rule01:20

The Phase Rule

The phase rule describes the relationship between the variance (degrees of freedom), the number of components, and the number of phases in a system at equilibrium.Variance is a concept that denotes the number of independent intensive properties (properties are those that do not depend on the amount of material in the system), such as temperature, pressure, and composition, that can be altered without impacting the number of phases in equilibrium.In a single-component system, such as pure water,...
Randomized Experiments01:13

Randomized Experiments

The randomization process involves assigning study participants randomly to experimental or control groups based on their probability of being equally assigned. Randomization is meant to eliminate selection bias and balance known and unknown confounding factors so that the control group is similar to the treatment group as much as possible. A computer program and a random number generator can be used to assign participants to groups in a way that minimizes bias.
Simple randomization
Simple...
Masking and Demasking Agents01:19

Masking and Demasking Agents

EDTA titrations may necessitate masking and demasking agents to temporarily protect a particular metal ion in a mixture from the EDTA reaction. These agents facilitate the sequential analysis of the metal ions by forming stable complexes with some—but not all—metal ions during certain steps.
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on the metal...

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Related Experiment Videos

Efficient text encryption and hiding with double-random phase-encoding.

Jun Sang1, Shenggui Ling, Mohammad S Alam

  • 1School of Software Engineering, Chongqing University, Chongqing 401331, China. jsang@cqu.edu.cn

Sensors (Basel, Switzerland)
|December 4, 2012
PubMed
Summary
This summary is machine-generated.

A novel double-random phase-encoding technique securely encrypts and hides text within images. This method ensures accurate secret text recovery and maintains host image quality for secure information transmission.

Related Experiment Videos

Area of Science:

  • Information Security
  • Digital Image Processing
  • Optical Information Processing

Background:

  • Secure transmission of sensitive text data is crucial.
  • Existing methods may compromise image quality or recovery accuracy.

Purpose of the Study:

  • To propose a novel text encryption and hiding method using double-random phase-encoding.
  • To evaluate the hiding capacity, recovery accuracy, and image quality of the proposed technique.

Main Methods:

  • Secret text is converted to a 2D array, with higher bits storing text data.
  • The array undergoes double-random phase-encoding.
  • The encoded array is superimposed onto a host image.

Main Results:

  • Accurate or near-accurate recovery of secret text is achieved.
  • Host image quality is preserved by optimizing text transformation and superimposition.
  • The method demonstrates improved security for text information transmission.

Conclusions:

  • The proposed double-random phase-encoding technique offers a secure and effective solution for text data hiding in images.
  • The balance between security, hiding capacity, and image integrity can be managed through parameter selection.