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

Design Example: Measuring Distance Between Two Points with Obstructions01:10

Design Example: Measuring Distance Between Two Points with Obstructions

28
When measuring distances in areas with physical obstructions, such as a lake in a field, surveyors must employ techniques to calculate accurate lengths without direct line measurements. One effective method is the offset technique, which allows for precise distance estimation over inaccessible stretches.In this scenario, a surveyor must measure a side of an area that crosses a lake. Since the measuring tape cannot span the lake, the surveyor begins by establishing a baseline that aligns with...
28
Two-Dimensional Force System01:20

Two-Dimensional Force System

873
A two-dimensional system in mechanical engineering involves the analysis of motion and forces in a plane. A two-dimensional force vector can be resolved into its components as:
873
Distance Measurements by Taping01:18

Distance Measurements by Taping

29
Tapes are essential in surveying for accurate, durable, and short-distance measurements. Made from lightweight, nylon-coated steel, they offer flexibility and strength for rugged outdoor use. The nylon coating protects against rust and wear, extending the tape's life. Standard lengths, around 30 meters, are marked in meters and millimeters for precision.Surveyors select tapes based on site conditions and accuracy needs. Lightweight, nylon-coated tapes are commonly used for ease of handling and...
29
Relative Velocity in Two Dimensions01:11

Relative Velocity in Two Dimensions

7.1K
Relative velocity is the velocity of an object as observed from a particular reference frame, or the velocity of one reference frame with respect to another reference frame. The concept of relative velocity can be used to describe motion in two dimensions. Consider a particle P and two reference frames S and S′. The position of the origin of S′ as measured in S is , the position of P as measured in S′ is , and the position of P as measured in S is , which can be evaluated by...
7.1K
Area Computation by the Alternative Coordinate Method01:24

Area Computation by the Alternative Coordinate Method

47
The alternative coordinate method, also known as the Shoelace Formula, is a technique for determining the area of a traverse using Cartesian coordinates. This method relies on the sequential arrangement of x and y coordinates for each point of the shape, ensuring accuracy and ease of application.In this approach, each corner's x and y coordinates are listed as fractions, with the x-coordinate as the numerator and the y-coordinate as the denominator. These coordinates are arranged sequentially...
47
Three-Dimensional Force System:Problem Solving01:30

Three-Dimensional Force System:Problem Solving

630
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...
630

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

Effectiveness and safety of extended upadacitinib induction therapy in adult patients with moderate-to-severe active ulcerative colitis.

Crohn's & colitis 360·2026
Same author

Best-first search-based approach for mining top-k closed frequent itemsets from uncertain databases.

PloS one·2026
Same author

Reliability of Behavioral and fNIRS Neural Responses: Assessments During Posture-Inhibitory Control Dual Tasking.

NeuroSci·2026
Same author

Generative AI for spatial tumor growth on MRI: a proof-of-principle study in pediatric diffuse midline glioma.

BMC medicine·2026
Same author

Microbial Modulation: Unraveling the Influence of Gut Microbiota on Macrophage Polarization in Tumor Microenvironments.

Cells·2026
Same author

Experiences From Two Cases of Crusted Scabies.

Oman medical journal·2026

相关实验视频

Updated: Jun 8, 2025

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography
06:09

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography

Published on: March 12, 2021

3.0K

在二维空间中使用非接触式高度测量方法.

Phu Nguyen Trung1, Nghien Ba Nguyen1, Kien Nguyen Phan2

  • 1Faculty of Information Technology, Hanoi University of Industry, No. 298 Cau Dien, Bac Tu Liem, Hanoi 143510, Vietnam.

Sensors (Basel, Switzerland)
|November 9, 2024
PubMed
概括

这项研究引入了一种新的非接触式方法,用于使用计算机视觉和智能手机图像测量人类身高. 该技术准确地确定各种姿势的高度,误差最小,推进身体测量技术.

关键词:
媒体管道 (MediaPipe) 是一个媒体管道.测量高度的测量方法没有接触的非接触式

更多相关视频

Visualization Method for Proprioceptive Drift on a 2D Plane Using Support Vector Machine
07:05

Visualization Method for Proprioceptive Drift on a 2D Plane Using Support Vector Machine

Published on: October 27, 2016

9.2K
Assessment of Child Anthropometry in a Large Epidemiologic Study
09:36

Assessment of Child Anthropometry in a Large Epidemiologic Study

Published on: February 2, 2017

27.0K

相关实验视频

Last Updated: Jun 8, 2025

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography
06:09

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography

Published on: March 12, 2021

3.0K
Visualization Method for Proprioceptive Drift on a 2D Plane Using Support Vector Machine
07:05

Visualization Method for Proprioceptive Drift on a 2D Plane Using Support Vector Machine

Published on: October 27, 2016

9.2K
Assessment of Child Anthropometry in a Large Epidemiologic Study
09:36

Assessment of Child Anthropometry in a Large Epidemiologic Study

Published on: February 2, 2017

27.0K

科学领域:

  • 生物识别信息 生物识别信息
  • 计算机视觉 计算机视觉
  • 人类的测量方法

背景情况:

  • 身高是一个关键的健康指标,用于医疗保健,美学和体育.
  • 现有的非接触式高度测量工具通常需要直立姿势,这限制了它们的适用性.
  • 在不同的身体姿势中准确地评估身高仍然是一个挑战.

研究的目的:

  • 开发和验证一种非接触式方法,用于在多种姿势中在二维空间中测量人类的身高.
  • 利用计算机视觉技术进行可访问和灵活的高度评估.
  • 建立一个高精度可靠的测量系统.

主要方法:

  • 利用计算机视觉与MediaPipe库用于联合点识别和YOLOv8模型用于本地化.
  • 训练了一个多变量线性回归模型,使用来自智能手机图像的关节间距离比率.
  • 收集了166名受试者在四种姿势中的数据:站立,旋转45°,旋转90°和跪下.

主要成果:

  • 实现了约1.2%的最小高度测量误差率.
  • 证明了在不同的身体位置上准确测量身高的可行性.
  • 验证了计算机视觉方法对人类身高评估的有效性.

结论:

  • 拟议的计算机视觉方法为非接触式高度测量提供了一个高度准确和多功能解决方案.
  • 这种方法克服了特定姿势测量技术的局限性.
  • 未来的工作将扩大姿势兼容性,并为各种捕获条件完善准确性.