一种方法的可靠性和有效性,用于测量从使用摄像机和姿势镜的图像中获得的车身旋转角度
Dai Nakaizumi1, Takaaki Nishimura2, Pleiades Tiharu Inaoka3
1Department of Physical Therapy, Graduate Course of Rehabilitation Science, School of Health Sciences, College of Medical, Pharmaceutical, and Health Sciences, Kanazawa University, 5-11-80, Kodatsuno, Kanazawa, Ishikawa, Japan; Department of Rehabilitation, Japanese Red Cross Kanazawa Hospital, Ishikawa, Japan.
Medical engineering & physics
|September 16, 2024
概括
这项研究引入了一种可靠和有效的方法,用于测量使用单个摄像头和姿势镜的车旋转角度. 这种具有成本效益的方法可以在没有专用设备的情况下提供准确的车旋转测量.
科学领域:
- 生物力学 生物力学
- 运动学 运动学
- 医疗成像医学成像
背景情况:
- 车身旋转是各种物理评估中的关键指标.
- 准确测量车旋角对于临床和研究应用至关重要.
- 现有的方法可能需要专门的设备或环境.
研究的目的:
- 开发和验证一种使用单一摄像头和姿势镜测量车身旋转角度的新方法.
- 评估这种新的基于成像的技术的可靠性和有效性.
- 为了将新方法与传统的仪测量进行比较.
主要方法:
- 使用三脚架和标记器创建了一个行李箱旋转角度模型.
- 箱体旋转角度使用手动度仪 (传统) 和新型摄像机镜系统进行测量.
- 计算了测量误差,量级内可靠性 (ICC 1.1),方法间一致性 (ICC 2.1) 和系统性误差 (布兰德-阿尔特曼分析).
主要成果:
- 这种新方法的平均绝对误差为1.17° (0.71°).
- 观察到高的定价内可靠性 (ICC 1.1 = 0.978) 和方法间一致性 (ICC 2.1 = 0.991).
- 布兰德-阿尔特曼分析表明,这两种测量方法之间没有显著的系统错误.
结论:
- 这种新的相机镜系统提供了一种有效且准确的方法来测量车旋转角.
- 这种技术具有成本效益,不需要昂贵的设备或专用空间.
- 它为评估不同环境中的干部旋转提供了一个实用的替代方案.
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