Institute of Industrial Engineering and Ergonomics, RWTH Aachen University, Germany.
Int J Occup Saf Ergon. 2022 Sep;28(3):1865-1873. doi: 10.1080/10803548.2021.1954791. Epub 2021 Sep 11.
Established methods for postural ergonomic risk assessment in occupational practice are mostly time-consuming and need to be conducted by experts. Use of technology could improve postural ergonomic risk assessments with regard to time efficiency and accuracy. A study was conducted to assess the accuracy of a markerless motion capture system (Microsoft Kinect V2) compared to a marker-based motion capture system (Vicon Bonita). Angles of different body segments were analysed. The results show major inaccuracies of the markerless motion capture system for capturing axial trunk rotation (mean angular deviation of 14.04°) indicating that potential health risks could be underestimated. Combined working postures of axial trunk rotation and arm anteversion show issues with self-occlusion. Based on the findings, it is discussed whether the detected inaccuracies for axial trunk rotation are likely to lead to overestimation or underestimation of potential health risks when conducting an ergonomic risk assessment.
现有的职业姿势工效学风险评估方法大多耗时且需要专家进行。使用技术可以提高姿势工效学风险评估的效率和准确性。本研究旨在评估无标记运动捕捉系统（Microsoft Kinect V2）与基于标记的运动捕捉系统（Vicon Bonita）相比的准确性，分析了不同身体部位的角度。结果表明，无标记运动捕捉系统在捕捉轴向躯干旋转时存在较大误差（平均角度偏差为 14.04°），这表明潜在的健康风险可能被低估。轴向躯干旋转和手臂前旋的组合工作姿势存在自遮挡问题。基于这些发现，讨论了当进行工效学风险评估时，检测到的轴向躯干旋转的这些不准确性是否可能导致对潜在健康风险的高估或低估。
