概括
本研究介绍了一种相聚变策略,用于减少多频边缘投射特征测量中的噪声. 通过将不同频率的相位图结合起来,这种方法可以提高测量精度,并最大限度地减少误差.
科学领域:
- 光学计量学 在光学计量学
- 3D测量技术的使用
背景情况:
- 随机噪声显著影响边缘投射特征测量中的测量准确性.
- 传统的多频相位转移造型测量经常丢弃低频相位图,这可能导致低于最佳的噪声抑制.
研究的目的:
- 开发和验证相聚变策略,以最大限度地减少多频相位移型测量中的噪声影响.
- 通过有效处理噪声引起的相位误差,提高3D表面测量的精度.
主要方法:
- 在一般相位变化下分析噪声引起的相位误差统计 (偏差和偏差).
- 制定相聚变策略,涉及不同边缘频率的相位图的加权线性组合.
- 为相位图组合和最小化的相位误差差推导最佳权重.
主要成果:
- 拟议的相聚变战略有效地将噪声对测量结果的影响降到最低.
- 推断了组合相位图的最佳权重,从而减少了相位误差差异.
- 模拟和实验结果证实了该方法的原理及其在提高测量精度方面的有效性.
结论:
- 相聚变策略提供了一种优越的降噪方法,与传统的多频相位移型测量方法相比.
- 该技术通过利用所有可用的频率相图,显著提高了3D表面测量的精度.
- 这些发现提供了一种可靠的方法来提高边缘投射分析系统的可靠性.
相关概念视频
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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...
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...
01:05Difference from Background: Limit of Detection
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The LOD indicates the presence or absence...
The LOD indicates the presence or absence...