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相关概念视频

Phase Contrast and Differential Interference Contrast Microscopy01:26

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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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Super-resolution Fluorescence Microscopy01:37

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Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
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Atomic Emission Spectroscopy: Interference01:30

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In atomic emission spectroscopy (AES), high-temperature atomizers excite a broad range of elements and molecules that generate complex emissions from sources such as oxides, hydroxides, and flame combustion products in the flame or plasma. Several strategies can be employed to minimize spectral interferences caused by overlapping emission lines or bands. These include increasing instrument resolution, choosing alternative emission lines, optimally placing the detector in low-background regions,...
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Confocal Fluorescence Microscopy01:16

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Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...
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Atomic Absorption Spectroscopy: Interference01:25

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Interference leads to systematic error in atomic absorption (AA) measurements by enhancing or diminishing the analytical signal or the background. These interferences can be grouped into three main categories: spectral interference, chemical interference, and physical interference.
Spectral interference occurs when signals from other elements or molecules overlap with the analyte signal, falsely elevating or masking the analyte's absorbance. This interference can be corrected using Zeeman,...
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在动态结构光中通过单元干扰来抑制斑点.

Mengyu Ren, Ji Cui, Si-Ao Cai

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    此摘要是机器生成的。

    本研究介绍了一种用于3D测量的新动态条纹光方法. 它有效地抑制了激光斑点,通过高质量的条纹投影实现了准确的3D重建.

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    科学领域:

    • 光学和光子学 在光学和光子学.
    • 计量学 计量学 计量学
    • 计算机视觉 计算机视觉

    背景情况:

    • 结构光3D测量技术依赖于投射模式来捕捉对象的深度和形态.
    • 基于激光的方法虽然适用于精细的特征,但由于斑点噪声干扰相位检测而受到影响.
    • 精确的3D重建在各种科学和工业应用中至关重要.

    研究的目的:

    • 为3D重建引入一种新的动态条纹光测量方法.
    • 为了克服激光斑点干扰在相位检测中的局限性.
    • 为了实现高精度的3D测量,改善条纹质量.

    主要方法:

    • 开发了一种使用单元干扰的动态条纹光测量技术.
    • 采用光辐射来抑制激光斑点.
    • 实现了一个简单且易于结构化的条纹投影和相位数字化系统.

    主要成果:

    • 通过光发射成功抑制了激光斑点.
    • 在物体表面上实现高质量的条纹投影.
    • 通过拟议的方法证明了准确的3D重建能力.

    结论:

    • 动态条纹光方法为无斑点的3D测量提供了强大的解决方案.
    • 这种技术在保持高精度的同时简化了3D重建过程.
    • 这种方法对于需要精确地捕获表面形态的应用非常实用.