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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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相关实验视频

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High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
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使用双摄像头/投影机设置进行3D点云验证和散射清除.

Jens T Thielemann1, Jostein Thorstensen1

  • 1SINTEF AS, 0373 Oslo, Norway.

Sensors (Basel, Switzerland)
|December 11, 2025
PubMed
概括

这项研究提出了一种新方法,用于在水中准确的3D成像,通过区分真实测量与散射引起的虚假测量. 这提高了水下机器人和3D数据的可靠性.

科学领域:

  • 机器人技术 机器人技术 机器人技术
  • 计算机视觉 计算机视觉
  • 光学工程是指光学工程.

背景情况:

  • 在的水中散射会产生虚假的3D测量,限制了水下机器人.
  • 由散射产生的不确定的物体边界减少了3D成像数据的有用性.
  • 现有的3D成像方法在具有挑战性的水下条件下难以准确.

研究的目的:

  • 开发一种可靠的方法,用于在水中精确的3D成像.
  • 为了消除因光散射引起的错误3D测量.
  • 为了提高水下机器人应用的3D数据的可靠性.

主要方法:

  • 使用基于三角形的3D成像原理.
  • 分析了摄像机/投影仪的几何形状,以及用于分散差异的投影模式.
  • 开发了一种高效的O(1) 算法,用于实时识别错误测量.

主要成果:

  • 与单摄像头系统相比,虚假阳性率降低了50-100倍.
  • 在各种度级别中保持了接近零的错误负率.
  • 证明了海底3D成像系统的显著稳定性改进.

结论:

关键词:
在3D成像中使用3D成像.散射介质是一种散射介质.海底成像技术的研究.

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  • 特定硬件,投射模式和算法的组合使得在水中可靠的3D成像成为可能.
  • 开发的方法显著提高了海底3D成像系统的可靠性.
  • 这一进步支持更复杂,更可靠的水下机器人操作.