概括
本研究引入了一个角度多样性照明方法,以减少斑点干扰测量的斑点噪声. 不相关的斑点场的连贯平均值有效地提高了阶段边缘模式的质量.
科学领域:
- 光学和光子学 在光学和光子学.
- 干涉测量技术 干涉测量技术
- 图像处理 图像处理
背景情况:
- 在斑点干扰测量中,斑点去关系噪声降低了相边框图案.
- 现有的降噪方法在平衡降噪和计算效率方面面临挑战.
研究的目的:
- 开发一种有效的斑点噪声抑制方法,用于斑点干扰测量.
- 为了提高阶段边缘模式的质量,而不会影响计算效率.
主要方法:
- 采用空间光调制器 (SLM) 在照明中利用角度多样性进行精确的角度调制.
- 实现同时的时间相位转移和获取多个无关的斑点场.
- 应用连贯的平均值来减少斑点噪声,用N (平均值数) 进行噪声降低缩放的理论分析.
主要成果:
- 显著地抑制了斑点的脱噪声.
- 实验结果验证了关于降噪的理论预测.
- 通过增强的阶段边缘图案,实现了斑点干扰测量的实际性能提高.
结论:
- 拟议的角度多样性照明方法有效地减少了斑点噪声.
- 不相关的斑点场的连贯平均值为改善斑点干扰测量质量的强有力的解决方案.
- 这种技术提高了斑点干扰计在各种科学和工程领域的可靠性和适用性.
相关概念视频
01:26Phase Contrast and Differential Interference Contrast Microscopy
7.5K
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...
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...
7.5K
01:25Atomic Absorption Spectroscopy: Interference
702
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,...
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,...
702