概括
我们开发了一种微型内镜,用于使用双波长全息技术进行精确的表面测量. 一种深度学习方法通过减少噪音阶段图中的测量误差,显著提高了准确性.
科学领域:
- 光学工程是指光学工程.
- 计量学 计量学 计量学
- 生物医学成像技术 生物医学成像技术
背景情况:
- 精确的微尺度表面地形测量对于各种科学和工业应用至关重要.
- 现有的微内镜技术由于光纤特性和噪声等因素而面临分辨率和精度的限制.
研究的目的:
- 提出一种新的微内镜地形测量方法,使用双波长全息.
- 评估光纤特性的影响,并引入虚拟表面粗度作为分辨率限制器.
- 开发和评估一个紧的微内镜系统,提高测量准确度.
主要方法:
- 在商业成像光纤束 (CFB) 中评估核心间分散和交叉通话.
- 使用3D打印的微光学设计和制造微内镜 (直径<450μm).
- 实施双波长全息以进行地形测量.
- 应用简单的阶段解封方法和深度学习方法来减少错误.
主要成果:
- 描述CFB属性和虚拟表面粗度的概念.
- 在金字塔测试对象上使用基本相解封方法实现了7.5%的相对测量误差.
- 使用深度学习方法来显著减少错误,该方法是针对噪音较大的相位图量身定制的.
- 通过深度学习方法,测量误差的标准偏差减少了4.2倍.
结论:
- 开发的微内镜系统可以在微尺度上进行准确的地形测量.
- 双波长全息相结合高级处理 (深度学习) 为高分辨率计量学提供了强大的解决方案.
- 深度学习方法有效地减轻噪音,提高微内镜测量的可靠性.
相关概念视频
01:29Two-Dimensional Microscopy in Microbiology
6
Two-dimensional (2D) microscopy encompasses a range of optical techniques that capture images within a single focal plane, offering detailed representations of microscopic structures. These techniques are essential in biological and medical research, enabling the visualization of cellular and subcellular structures with different levels of contrast and specificity.There are several major types of 2D microscopy, each with strengths and applications.Bright-Field MicroscopyBright-field microscopy...
6
01:16Confocal Fluorescence Microscopy
13.1K
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,...
13.1K
01:28Three-Dimensional Microscopy in Microbiology
3
Three-dimensional imaging techniques are essential in cell biology, allowing researchers to visualize intricate cellular structures with high resolution. Two prominent methods, Differential Interference Contrast Microscopy (DIC) and Confocal Scanning Laser Microscopy (CSLM), provide distinct advantages for imaging live and thick specimens, respectively.Differential Interference Contrast MicroscopyDIC microscopy enhances contrast in transparent, unstained samples by converting phase...
3
01:37Super-resolution Fluorescence Microscopy
6.9K
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...
6.9K