A low cost real-time motion tracking approach using webcam technology.
A low cost real-time motion tracking approach using webcam technology.
复制标题
DOI：
10.1016/j.jbiomech.2014.11.048
复制
发表时间：
2015-02-05
影响因子：
2.4
通讯作者：
Seetharaman, Yogesh
中科院分区：
文献类型：
--
作者：
Krishnan, Chandramouli;Washabaugh, Edward P.;Seetharaman, Yogesh
物理治疗是运动功能障碍患者步态恢复的重要组成部分。越来越多的证据表明，通过运动轨迹的视觉反馈来整合运动学习任务是促进治疗结果的有用方法。视觉反馈通常通过使用三维运动捕捉系统记录受试者的肢体运动模式并使用定制软件实时显示来提供。然而，由于操作该设备所需的技术专业知识以及采购三维运动捕捉系统所涉及的成本，这种方法很少在临床中使用。在本文中，我们描述了一种低成本的二维实时运动跟踪方法，使用一个简单的网络摄像头和图像处理算法在LabVIEW视觉助手。我们还使用高精度机器人设备（Lokomat）在各种步行速度下评估了这种方法的准确性。此外，实时运动跟踪的可靠性和可行性进行了评估，在健康的人类参与者。结果表明，从网络摄像头跟踪方法的测量是可靠和准确的。对人类受试者的实验还表明，参与者可以利用该设备产生的实时运动反馈，在跑步机上行走时成功执行运动学习任务。这些发现表明，网络摄像头运动跟踪方法是一种可行的低成本解决方案，以执行实时运动分析和训练。
Physical therapy is an important component of gait recovery for individuals with locomotor dysfunction. There is a growing body of evidence that suggests that incorporating a motor learning task through visual feedback of movement trajectory is a useful approach to facilitate therapeutic outcomes. Visual feedback is typically provided by recording the subject’s limb movement patterns using a three-dimensional motion capture system and displaying it in real-time using customized software. However, this approach can seldom be used in the clinic because of the technical expertise required to operate this device and the cost involved in procuring a three-dimensional motion capture system. In this paper, we describe a low cost two-dimensional real-time motion tracking approach using a simple webcam and an image processing algorithm in LabVIEW Vision Assistant. We also evaluated the accuracy of this approach using a high precision robotic device (Lokomat) across various walking speeds. Further, the reliability and feasibility of real-time motion-tracking were evaluated in healthy human participants. The results indicated that the measurements from the webcam tracking approach were reliable and accurate. Experiments on human subjects also showed that participants could utilize the real-time kinematic feedback generated from this device to successfully perform a motor learning task while walking on a treadmill. These findings suggest that the webcam motion tracking approach is a feasible low cost solution to perform real-time movement analysis and training.
登录
查看更多内容
影响因子：
2.8
作者：
Jezernik, S;Colombo, G;Morari, M
通讯作者：
Morari, M
影响因子：
2.4
作者：
Beltran, Eduardo J.;Dingwell, Jonathan B.;Wilken, Jason M.
通讯作者：
Wilken, Jason M.
影响因子：
2
作者：
Ellis, Michael D.;Acosta, Ana Maria;Dewald, Julius P. A.
通讯作者：
Dewald, Julius P. A.
影响因子：
2.4
作者：
Bonnet, Vincent;Mazza, Claudia;Cappozzo, Aurelio
通讯作者：
Cappozzo, Aurelio
影响因子：
3.7
作者：
Krishnan C;Ranganathan R;Dhaher YY;Rymer WZ
通讯作者：
Rymer WZ