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相关概念视频

Phase Contrast and Differential Interference Contrast Microscopy01:26

Phase Contrast and Differential Interference Contrast Microscopy

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Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
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Bulk Modulus01:21

Bulk Modulus

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The bulk modulus is a scientific term used to describe a material's resistance to uniform compression. It is the proportionality constant that links a change in pressure to the resulting relative volume change.
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Even and Odd Signals01:17

Even and Odd Signals

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An even signal, whether in continuous-time or discrete-time, is defined by its symmetry with its time-reversed version. Mathematically, this is represented as
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Systematic characteristic evaluation of clay-based cementitious material derived from calcium carbide residue and waste tile powder.

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相关实验视频

Updated: Jun 29, 2025

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

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

Published on: January 28, 2019

9.8K

基于光学相切断的双图像加密,使用相同模块分解和随机面具.

Guangyu Luan1, Chenggen Quan2

  • 1College of Electrical and Information, Heilongjiang Bayi Agricultural University, Daqing, 163319, Heilongjiang, China. luanguangyu@126.com.

Scientific reports
|March 27, 2024
PubMed
概括
此摘要是机器生成的。

本研究介绍了一种安全的光学加密方法,使用随机面具和等模块分解,防止图像交叉声和增强数据安全性.

更多相关视频

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
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Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

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Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
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Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

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相关实验视频

Last Updated: Jun 29, 2025

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

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

Published on: January 28, 2019

9.8K
Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
09:33

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Published on: June 7, 2019

6.3K
Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
14:18

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

Published on: February 28, 2016

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科学领域:

  • 光学是什么?光学是什么?光学是什么?
  • 信息安全 信息安全
  • 密码学 密码学 密码学 密码学

背景情况:

  • 光学加密方案容易受到各种攻击.
  • 现有的方法,如相切断,可能导致信息泄露.

研究的目的:

  • 开发一种新的光学加密方案,免受双图像交叉声波的影响.
  • 为了加强对复杂攻击的安全性.

主要方法:

  • 使用等模块分解 (EMD) 和随机面具进行加密.
  • 将两个纯文本加密成一个加密文本和两个私钥面具.
  • 引入了随机的振幅和相位面具.

主要成果:

  • 实现了双重图像的无杂音加密.
  • 该计划表现出对信息泄露和各种攻击的免疫力.
  • 模拟证实了拟议方法的可行性和有效性.

结论:

  • 拟议的光学加密方案提供了强大的安全性.
  • 将衍射距离和波长作为关键的结合大大提高了安全性.
  • 这种方法为光学信息保护提供了一个安全的解决方案.