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

Influence of Earth's Curvature and Atmospheric Refraction on Leveling01:26

Influence of Earth's Curvature and Atmospheric Refraction on Leveling

139
During leveling, the Earth's curvature and atmospheric refraction introduce deviations in the line of sight from a true horizontal reference. When the line of sight is leveled, it remains perpendicular to the plumb line only at a single point. Beyond this, it deviates due to the Earth’s curvature, represented by the correction C. For a sight distance D, the deviation can be derived using the relationship:This relationship shows that the deviation increases quadratically with distance.
139
Uniform Depth Channel Flow: Problem Solving01:18

Uniform Depth Channel Flow: Problem Solving

85
To calculate the flow rate for a trapezoidal channel, first, identify the bottom width, side slope, and flow depth of the channel. The cross-sectional area (A) corresponding to the depth of flow (y), channel bottom width (B), and side slope (θ) is determined by:Next, calculate the wetted perimeter, which includes the bottom width and the sloped side lengths in contact with the water. Using the values of the cross-sectional area and the wetted perimeter, determine the hydraulic radius by...
85
Focusing of Light in the Eye01:16

Focusing of Light in the Eye

2.9K
Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
2.9K
Three-Dimensional Force System:Problem Solving01:30

Three-Dimensional Force System:Problem Solving

691
A three-dimensional force system refers to a scenario in which three forces act simultaneously in three different directions. This type of problem is commonly encountered in physics and engineering, where it is necessary to calculate the resultant force on the system, which can then be used to predict or analyze the behavior of the object or structure under consideration.
To solve a three-dimensional force system, first resolve each force into its respective scalar components. Do this using...
691
Sight Distance in a Vertical Curve01:29

Sight Distance in a Vertical Curve

74
Sight distance on vertical curves is critical in roadway design. It ensures drivers can see far enough ahead to identify and respond to hazards effectively. This directly impacts safety, driver comfort, and the overall efficiency of the transportation network.Vertical curves are classified into crest and sag curves based on their geometry. For crest curves, sight distance is determined by the line of sight between a driver's eye and a small object on the road's surface. Design parameters for...
74

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

Pachydermoperiostosis (Touraine-Solente-Gole syndrome): A case report and literature review.

Medicine·2026
Same author

Patient journeys mapping in health management for older patients with chronic obstructive pulmonary disease: a qualitative descriptive study.

BMC public health·2026
Same author

Publisher Correction: Perioperative Treatment Patterns for Muscle-Invasive Bladder Cancer Patients Undergoing Radical Cystectomy in the Adjuvant Immunotherapy Era: A Retrospective Analysis of US Community Oncology Practice.

Oncology and therapy·2026
Same author

Supportive care needs, decision-making participation attitudes, and quality of life in young and middle-aged Chinese patients with cancer: A latent profile and mediation analysis.

Asia-Pacific journal of oncology nursing·2026
Same author

The Psychological Consequences of Advice Giving: Advisors' Moral Self-Evaluations, Memory Errors and the Impact of Prosocial Cost.

Behavioral sciences (Basel, Switzerland)·2026
Same author

Identification of Reproductive Trait-Associated Loci and Candidate Genes in Commercial Pigs via 50K SNP Genotyping and Genome-Wide Association Study.

Biology·2026
Same journal

Denoising algorithm of Φ-OTDR systems based on adaptive fractional wavelet transform denoising.

Optics express·2026
Same journal

Millisecond photon-to-photon latency and high-speed volumetric projection system for optogenetics.

Optics express·2026
Same journal

Polarization-encoded coaxial structured light for high-precision 3D surface profilometry.

Optics express·2026
Same journal

Discrete freeform optical design based on collaborative optimization of point cloud and local normals.

Optics express·2026
Same journal

Ultrafast ghost imaging with 25 GHz speckle switching and wavelength-division multiplexing.

Optics express·2026
Same journal

Atomic vapor cells fabricated by femtosecond laser welding of standard-optical-quality glass.

Optics express·2026
查看所有相关文章

相关实验视频

Updated: Jul 16, 2025

Robotized Testing of Camera Positions to Determine Ideal Configuration for Stereo 3D Visualization of Open-Heart Surgery
05:12

Robotized Testing of Camera Positions to Determine Ideal Configuration for Stereo 3D Visualization of Open-Heart Surgery

Published on: August 12, 2021

2.1K

基于多目标优化的深水三维视觉测量的折射校正.

Liuning Gu, Wenwu Chen, Xiaohan Hu

    Optics express
    |September 15, 2023
    PubMed
    概括
    此摘要是机器生成的。

    这项研究引入了一种新的方法来纠正水下3D视觉测量中的折射误差. 它可以提高深水环境中形状和变形分析的准确性.

    更多相关视频

    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
    Reefshape: A System for the Efficient Collection and Automated Processing of Time-Series Underwater Photogrammetry Data for Benthic Habitat Monitoring
    13:35

    Reefshape: A System for the Efficient Collection and Automated Processing of Time-Series Underwater Photogrammetry Data for Benthic Habitat Monitoring

    Published on: June 13, 2025

    410

    相关实验视频

    Last Updated: Jul 16, 2025

    Robotized Testing of Camera Positions to Determine Ideal Configuration for Stereo 3D Visualization of Open-Heart Surgery
    05:12

    Robotized Testing of Camera Positions to Determine Ideal Configuration for Stereo 3D Visualization of Open-Heart Surgery

    Published on: August 12, 2021

    2.1K
    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
    Reefshape: A System for the Efficient Collection and Automated Processing of Time-Series Underwater Photogrammetry Data for Benthic Habitat Monitoring
    13:35

    Reefshape: A System for the Efficient Collection and Automated Processing of Time-Series Underwater Photogrammetry Data for Benthic Habitat Monitoring

    Published on: June 13, 2025

    410

    科学领域:

    • 光学工程是指光学工程.
    • 机器人技术 机器人技术 机器人技术
    • 海洋技术 海洋技术

    背景情况:

    • 折射显著影响深水环境中3D视觉测量的准确性.
    • 现有的方法难以准确校准水下环境中的折射扭曲.

    研究的目的:

    • 开发一个高精度的双眼相机折射成像模型用于深水3D测量.
    • 建议对折射参数进行校准方法,以增强形状和变形分析.

    主要方法:

    • 建立了一个双眼相机折射成像模型.
    • 使用3D校准目标进行初始折射轴估计.
    • 使用非主导排序基因算法II (NSGA-II) 优化折射参数,使用双重目标 (空间点对距离和再投射错误).
    • 开发了一种改进的数值方法,以加速分析前置投影,以有效计算再投影错误.

    主要成果:

    • 实现了重建点的平均绝对位置误差小于1.1毫米.
    • 实现了0.04mm以下的平均位移误差.
    • 通过水下实验证明了该方法的有效性.

    结论:

    • 拟议的方法为深水环境中准确的3D视觉测量提供了强大的解决方案.
    • 校准技术有效地减轻折射引起的误差,使精确的形状和变形分析.