商业摄像机解决方案的评估,以追踪手动力学
Alexander H Sprague1, Christopher Vogel1, Mylah Williams1
1Lampe Joint Department of Biomedical Engineering at the University of North Carolina at Chapel Hill (Chapel Hill, NC) and North Carolina State University (Raleigh, NC), Raleigh, NC 27695, USA.
Sensors (Basel, Switzerland)
|September 27, 2025
概括
跳动运动控制器2 (LM2) 为临床应用提供比MediaPipe (MP) 更准确的手动运动跟踪. 虽然这两种无标记系统都捕获了关节运动,但LM2显示出更低的误差和更高的相关性,特别是在更快的速度.
科学领域:
- 生物力学 生物力学
- 人与计算机的交互
- 机器人技术 机器人技术 机器人技术
背景情况:
- 无标记运动捕捉在设置和可用性方面比基于标记器的系统具有优势.
- 精确的手动力学跟踪对于临床诊断和科学研究至关重要.
- 在动态任务中,诸如Leap Motion Controller 2 (LM2) 和MediaPipe (MP) 等流行的无标记系统的性能需要进一步研究.
研究的目的:
- 评估和比较Leap Motion Controller 2 (LM2) 和MediaPipe (MP) 无标记系统的准确性,以捕获数字关节动力学.
- 评估移动速度对这些无标记系统性能的影响.
- 将没有标记器的系统与基于标记器的黄金标准系统 (Vicon) 进行基准测试.
主要方法:
- 十一名参与者以三种速度完成了手动任务.
- 手的地标数据同时使用LM2,MP和基于Vicon标记器的系统进行捕获.
- 计算了数字连接角度,并与Vicon数据相对计算了根平均平方误差 (RMSE) 和相关系数 (r).
主要成果:
- 与MP (RMSE = 22.5°,r = 0.45) 相比,LM2的RMSE平均值显著较低 (14.8°) 和平均相关性更高 (r = 0.58).
- 增加的运动速度显著降低了MP性能 (更高的RMSE,更低的r),但没有LM2性能.
- 靠近的间关节表现出更大的误差,但在两个系统之间更高的相关性.
结论:
- LM2提供比MP更准确的实时手关节运动捕获,使其更适合需要高精度的应用.
- 虽然这两种系统都能捕捉关节水平的运动,但它们的准确性可能无法满足所有临床和科学应用的严格要求.
- 移动速度是影响无标记手跟踪系统准确性的关键因素,特别是MP.
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