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相关概念视频

Calibration Curves: Linear Least Squares01:20

Calibration Curves: Linear Least Squares

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A calibration curve is a plot of the instrument's response against a series of known concentrations of a substance. This curve is used to set the instrument response levels, using the substance and its concentrations as standards. Alternatively, or additionally, an equation is fitted to the calibration curve plot and subsequently used to calculate the unknown concentrations of other samples reliably.
For data that follow a straight line, the standard method for fitting is the linear...
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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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Transformation of Plane Strain01:12

Transformation of Plane Strain

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When analyzing elongated structures like bars subjected to uniformly distributed loads, it is essential to understand the transformation of plane strain when coordinate axes are rotated. This transformation helps to assess how material deformation characteristics vary with orientation, which is crucial in materials science and structural engineering.
Under plane strain conditions, typical for members where one dimension significantly exceeds the others, deformations and resultant strains are...
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相关实验视频

Updated: Jul 23, 2025

Determining 3D Flow Fields via Multi-camera Light Field Imaging
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使用空间几何学的直线结构光平面的新校准方法.

Huiping Gao1, Guili Xu1, Zhongchen Ma2

  • 1College of Automation, Nanjing University of Aeronautics and Astronautics, Jiangjun Road, Nanjing 211106, China.

Sensors (Basel, Switzerland)
|July 14, 2023
PubMed
概括

本研究引入了一种新的空间几何学方法,用于校准结构光平面,通过精确计算校准点来提高准确性. 与现有的平面目标方法相比,新方法大大减少了校准误差.

关键词:
最小方形原则 最小方形原则目标飞机 目标飞机 目标飞机空间几何学的空间几何学结构光平面校准结构光平面校准

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Measuring Spatially- and Directionally-varying Light Scattering from Biological Material
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High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
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High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques

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相关实验视频

Last Updated: Jul 23, 2025

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14:25

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Measuring Spatially- and Directionally-varying Light Scattering from Biological Material
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Measuring Spatially- and Directionally-varying Light Scattering from Biological Material

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High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
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科学领域:

  • 计算机视觉 计算机视觉
  • 计量学 计量学 计量学
  • 光学工程是指光学工程.

背景情况:

  • 结构光平面校准对于3D重建至关重要,但经常受到噪音和不准确的点定位的阻碍.
  • 使用平面目标的现有方法与视野和传感器噪声作斗争,导致校准点坐标偏差并影响整体校准准确度.

研究的目的:

  • 开发一种新的,更准确的结构光平面校准方法.
  • 克服噪音和不精确的点定位造成的现有方法的局限性.
  • 通过使用易于获得的目标,提供强大的校准过程.

主要方法:

  • 一种新的方法计算了基于空间几何学的校准点,通过找到投射线和目标线之间的共同垂直的中点.
  • 目标被重新定位以获得多个非对线校准点.
  • 光平面参数是通过将这些计算点相配而确定的.

主要成果:

  • 拟议的方法实现了0.011mm的平均校准误差.
  • 这比使用交叉比率不变的平面目标方法的0.031毫米平均误差有了显著的改进.
  • 校准过程被简化,只需要一个棋盘目标.

结论:

  • 这种基于空间几何学的新方法为结构光平面校准提供了卓越的准确性.
  • 这种方法有效地减轻了由于噪音和点定位不准确而产生的错误.
  • 该方法为结构光校准应用提供了更简单,更精确的替代方案.