Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Reconstruction of Signal using Interpolation01:10

Reconstruction of Signal using Interpolation

337
Signal processing techniques are essential for accurately converting continuous signals to digital formats and vice versa. When a continuous signal is sampled with a period T, the resulting sampled signal exhibits replicas of the original spectrum in the frequency domain, spaced at intervals equal to the sampling frequency. To handle this sampled signal, a zero-order hold method can be applied, which creates a piecewise constant signal by retaining each sample's value until the next...
337
Aliasing01:18

Aliasing

227
Accurate signal sampling and reconstruction are crucial in various signal-processing applications. A time-domain signal's spectrum can be revealed using its Fourier transform. When this signal is sampled at a specific frequency, it results in multiple scaled replicas of the original spectrum in the frequency domain. The spacing of these replicas is determined by the sampling frequency.
If the sampling frequency is below the Nyquist rate, these replicas overlap, preventing the original...
227

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Mapping Global Terrestrial Spatiotemporal Dynamics of Atmospheric CO<sub>2</sub> Carbon Isoscapes for Ecological Studies.

Global change biology·2026
Same author

Spatial multi-omics landscape of colorectal cancer macro- and micrometastases.

Cancer cell·2026
Same author

scImmuneCo: a compendium of cell-type-specific functional modules for decoding immune responses from single-cell RNA-seq data.

Briefings in bioinformatics·2026
Same author

Interleukin 12-tethered nano-aluminum adjuvant orchestrates environmental immunomodulation to empower cytotoxic T cells against solid tumors.

Acta pharmaceutica Sinica. B·2026
Same author

Structural asymmetry in knowledge of active and passive tetanus immunization among frontline healthcare workers: Implications for adult booster policy in China.

Human vaccines & immunotherapeutics·2026
Same author

BP-1-102 inhibits multiple pathways of NFATc1 activation to alleviate osteoporosis and downregulate osteoclast differentiation in ovariectomized mice.

Biochemical and biophysical research communications·2026

相关实验视频

Updated: Sep 11, 2025

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
11:34

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques

Published on: December 3, 2013

15.7K

基于深度学习的非决定性波面估计,用于多频段同步高分辨率重建技术.

Lingxiao Zhang, Libo Zhong, Youming Guo

    Optics express
    |August 13, 2025
    PubMed
    概括

    本研究引入了一种新的非确定性估计 (ND-Estimation) 方法和一个轻量级残余网络 (SF-ResNet),以改进用于多频段图像重建的波面估计. 开发的方法准确地估计波面和点传播函数 (PSF),提高望远镜图像质量.

    科学领域:

    • 天文学和天体物理学
    • 图像处理 图像处理
    • 计算光学是指计算机光学.

    背景情况:

    • 基于地面的望远镜需要图像后处理以提高质量.
    • 多频段同步高分辨率重建依赖于相位检索来进行波面估计.
    • 现有的相位检索算法与波浪模糊性作斗争,影响多频段PSF的准确性.

    研究的目的:

    • 为了解决当前阶段检索算法的局限性,在多频段图像重建中.
    • 开发一种准确的波浪和多频段点扩散函数 (PSF) 估计方法.
    • 为了实现多频段天文图像的快速和高分辨率重建.

    主要方法:

    • 提出了一种非决定性估计 (ND-Estimation) 方法,修改训练数据和损失函数.
    • 开发了一个轻量级的单焦平面残余网络 (SF-ResNet).
    • 训练网络以解决相检索中固有的复杂的并联波面模糊性.

    主要成果:

    • SF-ResNet与ND-Estimation相结合,在各种流强度中实现了高精度的波面估计.
    • 实现了多频段PSF的准确估计,大大改善了现有方法.
    • 该方法证明了毫秒级推断时间 (2.7566 ms).

    更多相关视频

    Lens-free Video Microscopy for the Dynamic and Quantitative Analysis of Adherent Cell Culture
    09:04

    Lens-free Video Microscopy for the Dynamic and Quantitative Analysis of Adherent Cell Culture

    Published on: February 23, 2018

    9.6K
    Author Spotlight: Integrating Ultrasound Imaging with Biochemical Markers for Thyroid Disease Diagnosis
    05:41

    Author Spotlight: Integrating Ultrasound Imaging with Biochemical Markers for Thyroid Disease Diagnosis

    Published on: February 9, 2024

    738

    相关实验视频

    Last Updated: Sep 11, 2025

    High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
    11:34

    High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques

    Published on: December 3, 2013

    15.7K
    Lens-free Video Microscopy for the Dynamic and Quantitative Analysis of Adherent Cell Culture
    09:04

    Lens-free Video Microscopy for the Dynamic and Quantitative Analysis of Adherent Cell Culture

    Published on: February 23, 2018

    9.6K
    Author Spotlight: Integrating Ultrasound Imaging with Biochemical Markers for Thyroid Disease Diagnosis
    05:41

    Author Spotlight: Integrating Ultrasound Imaging with Biochemical Markers for Thyroid Disease Diagnosis

    Published on: February 9, 2024

    738

    结论:

    • 该ND-估计方法有效地解决波模两可,以提高准确性.
    • SF-ResNet为高精度波浪和PSF估计提供了一个计算效率高的解决方案.
    • 这种方法为推进多频段同步高分辨率重建技术提供了一种可行的方法.