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相关概念视频

Bandpass Sampling01:17

Bandpass Sampling

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In signal processing, bandpass sampling is an effective technique for sampling signals that have most of their energy concentrated within a narrow frequency band. This type of signal is known as a bandpass signal. The key principle of bandpass sampling involves sampling the signal at a rate that is greater than twice the signal's bandwidth to prevent aliasing.
A bandpass signal has a spectrum with a lower frequency limit, denoted as ω1, and an upper frequency limit, denoted as ω2....
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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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相关实验视频

Updated: Sep 13, 2025

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共享模式的多带宽过用于插即用多光谱深度成像.

Zhiwei Deng, Zhan Shi, Shiqiao Li

    Optics express
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    此摘要是机器生成的。

    我们介绍了一种共享模式的多带宽过 (SMF) 方法,用于多光谱深度成像 (MDI). 这种技术简化了光谱和深度记录,使得成像系统更加紧和高效.

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    科学领域:

    • 光学和光子学 在光学和光子学.
    • 计算机视觉 计算机视觉
    • 机器人技术 机器人技术 机器人技术

    背景情况:

    • 传统的多光谱波器阵列 (MFA) 摄像头需要精确的像素水平对齐.
    • 传统的并行系统用于多谱深度成像 (MDI) 需要交叉模式的注册.
    • 由于对齐要求,现有的系统可能是庞大而复杂的.

    研究的目的:

    • 提出一种新的共享模式多带宽过 (SMF) 方法,用于插即用MDI.
    • 为了实现灵活,可定制和具有成本效益的多光谱成像.
    • 开发一个简化注册和减少体积的系统.

    主要方法:

    • 使用一个低成本的平面多带宽 (MBP) 过器进行光谱过.
    • 实现实时线性计算用于图像处理.
    • 集成批量制造的MBP跨平行摄像头进行共享模式注册.

    主要成果:

    • 开发了一种采用两个SMF摄像头的原型系统,用于实时7频段光谱和深度成像.
    • 在半最大 (FWHM) 达到10-15 nm的光谱全宽.
    • 在1600×1300空间分辨率和30fps的1.75mm深度准确度.

    结论:

    • SMF方法为MDI提供了一种简化和更紧的方法.
    • 原型系统有效地执行实时光谱和深度成像.
    • 该技术已被验证用于实际应用,如自动驾驶.