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相关概念视频

Measuring Acceleration Due to Gravity01:12

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Consider a coffee mug hanging on a hook in a pantry. If the mug gets knocked, it oscillates back and forth like a pendulum until the oscillations die out.
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Distance Measurements by Taping01:18

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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...
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Relative Motion Analysis - Acceleration01:10

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A slider-crank mechanism converts rotational motion from the crank into linear motion of the slider or vice versa. This mechanism consists of three main parts: the crank, the connecting rod, and the slider. The movement of the slider-crank is an example of general plane motion as the fluctuating angle between the crank and the connecting rod. Consider a segment AB where point A is at the end of the slider and point B is on the diametrically opposite end to point A, on a crack. The variance in...
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Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device01:30

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Surveyors use Global Positioning System (GPS) technology to measure the precise location and elevation of points on Earth. In a recent survey, GPS receivers were used to determine the coordinates and elevations of two park monuments. The process involved careful mission planning, data collection, and correction to ensure accuracy. The survey began with mission planning to identify optimal satellite visibility and minimize Position Dilution of Precision (PDOP). A geodetic control point...
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In an experiment conducted during a Mars mission, a rover propels a projectile with an initial velocity, and the projectile rebounds after colliding with the Martian surface. To ascertain the maximum height attained by the projectile after this collision, the known restitution coefficient and acceleration due to gravity are employed.
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相关实验视频

Updated: Jul 27, 2025

Video Movement Analysis Using Smartphones ViMAS: A Pilot Study
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使用单个智能手机的无标记运动捕捉量化跳跃高度.

Timilehin B Aderinola1, Hananeh Younesian1, Darragh Whelan2

  • 1Insight SFI Centre for Data AnalyticsUniversity College Dublin D04 V1W8 Dublin Ireland.

IEEE open journal of engineering in medicine and biology
|June 12, 2023
PubMed
概括
此摘要是机器生成的。

使用智能手机的无标记运动捕捉 (MMC) 准确地测量了反运动跳跃 (CMJ) 高度. 这项技术在没有专用设备的情况下对低体爆炸力进行评估是有希望的.

关键词:
反运动跳跃跳跃.跳跃高度 跳跃高度没有标记的移动捕捉.光学运动捕捉器 (optical motion capture) 是一种用于捕捉运动的技术.

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相关实验视频

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科学领域:

  • 生物力学 生物力学
  • 运动科学 运动科学 运动科学
  • 人类运动分析 人类运动分析

背景情况:

  • 反运动跳跃 (CMJ) 是评估下体爆炸力的一种标准测试.
  • 准确测量跳跃高度对于性能评估和伤害预防至关重要.
  • 传统的运动捕捉系统可能昂贵且复杂的设置.

研究的目的:

  • 评估无标记运动捕捉 (MMC) 的准确性,使用单个智能手机测量双边和单边CMJ跳跃高度.
  • 将基于智能手机的MMC跳跃高度测量与力板和光学运动捕捉 (OMC) 进行比较.

主要方法:

  • 16名健康成年人进行了双边和单边CMJ,同时通过力盘,OMC和单个智能手机摄像头进行记录.
  • 使用OpenPose软件将无标记运动捕捉 (MMC) 应用到智能手机视频中.
  • 从MMC的跳跃高度与力板和OMC数据进行了验证.

主要成果:

  • 基于智能手机的MMC在量化CMJ跳跃高度方面表现出高可靠性,其类内相关系数 (ICC) 从0.84到0.99.
  • 在不需要手动视频分割或摄像头校准的情况下,可以实现精确的测量.
  • 该方法在双边和单边的跳跃评估中都被证明是有效的.

结论:

  • 基于单个智能手机的无标记运动捕捉是衡量反运动跳跃高度的有希望的,可访问的工具.
  • 这种方法为传统的,更复杂的运动捕捉系统提供了可行的替代方案,用于评估低体爆炸力.
  • 进一步的研究可以探索其在各种体育和临床环境中的应用.