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相关概念视频

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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Phase Contrast and Differential Interference Contrast Microscopy01:26

Phase Contrast and Differential Interference Contrast Microscopy

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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...
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相关实验视频

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Lensless Fluorescent Microscopy on a Chip
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Dark2Light:多阶段的渐进式学习模型,用于在低光条件下进行图像增强.

Rui-Kang Li, Meng-Hao Li, Shi-Qi Chen

    Optics express
    |January 5, 2024
    PubMed
    概括

    恢复低光图像是具有挑战性的,因为噪音和低光照明. 拟议的Dark2Light模型逐渐增强照明和消除噪声,优于现有的低光图像增强 (LLIE) 方法.

    科学领域:

    • 计算机视觉 计算机视觉
    • 图像处理 图像处理
    • 人工智能的人工智能

    背景情况:

    • 由于严重的噪音和低照度,低光图像增强 (LLIE) 很困难.
    • 简单的照明恢复会放大噪音,阻碍有效的信号恢复.

    研究的目的:

    • 开发一个多阶段模型,Dark2Light,用于逐步恢复低光图像.
    • 为应对同时提高照明和消除噪音的双重挑战.

    主要方法:

    • 将图像从sRGB转换为线性RGB,以提高线性照明.
    • 采用上下文变压器块用于粗到细的照明增强.
    • 使用U-Net形状的无声区块来消除噪音,以及双重监督的注意区块来进行渐进的恢复.

    主要成果:

    • Dark2Light从低光输入逐渐恢复正常光照的图像.
    • 该模型有效地增强了照明,同时减轻了噪音放大.
    • 与最先进的LLIE方法相比,定量和定性实验显示出更高的性能.

    结论:

    • Dark2Light为具有挑战性的低光图像增强任务提供了有效的解决方案.

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  • 这种多阶段的方法平衡了恢复照明和抑制噪音.
  • 拟议的方法推进了低光图像恢复领域.