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相关概念视频

Imaging Biological Samples with Optical Microscopy01:18

Imaging Biological Samples with Optical Microscopy

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Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
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Light Acquisition02:16

Light Acquisition

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In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
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Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

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Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.
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Confocal Fluorescence Microscopy01:16

Confocal Fluorescence Microscopy

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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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Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

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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...
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相关实验视频

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Lensless Fluorescent Microscopy on a Chip
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Lensless Fluorescent Microscopy on a Chip

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低成本和简单的光学系统基于波编码和深度学习.

Shijie Wei, Huachao Cheng, Ben Xue

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    概括
    此摘要是机器生成的。

    本研究介绍了一种低成本的波编码 (WFC) 系统,使用深度学习来增强机器视觉. 优化的系统显著扩大了对小部件的精确检查的视野深度.

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    相关实验视频

    Last Updated: Jul 16, 2025

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    Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
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    Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

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    科学领域:

    • 计算成像技术的成像
    • 机器视觉 机器视觉 机器视觉
    • 光学系统设计设计.

    背景情况:

    • 计算成像集成光学设计和数字算法来简化成像任务.
    • 波面编码 (WFC) 是一种关键技术,可以解决光圈和深度场的限制.

    研究的目的:

    • 展示一个低成本,简单的光学系统,结合WFC和深度学习.
    • 使用深度学习优化相板编码,以减少偏差校正需求.

    主要方法:

    • 在深度学习框架内为相板开发了优化的编码方法.
    • 采用双键镜头和立方相罩实现光学编码.
    • 使用深度残留UNet++网络进行数字解码.

    主要成果:

    • 实现了良好的图像分辨率.
    • 将系统的视野深度扩大了13倍.
    • 在高精度检查任务中表现出显著的改进.

    结论:

    • 开发的WFC系统为机器视觉提供了一个具有成本效益的解决方案.
    • 深度学习优化的方法增强了视野深度和分辨率.
    • 这种技术对于精确检查和处理小部件非常有价值.