Presentation
Comparing Digital Human Model Outputs between Several Body Tracking Modalities in Virtual Reality
DescriptionProactive ergonomics uses digital human models (DHMs) early in design to optimize performance and reduce costs. Integrating virtual reality (VR) and motion capture technologies enables real-time DHM posturing, eliminating the need to manually posture the DHM – which are both time-consuming and prone to bias. This study evaluated DHM hand location accuracy compared to ground truth hand locations when different body tracking systems were used as inputs into the DHM in VR simulations. 16 participants were instrumented with inertial (Xsens), optical (Vicon) and VR (Vive) body tracking systems and completed a load transfer task with their right arm. Across all body tracking modalities, DHM hand locations had an RMSE of approximately 10 cm compared to ground truth hand locations. Hand locations tracked using the Vive trackers showed the lowest overall RMSE relative to actual hand locations (13.7 cm ±5.9cm). Spine compression was most affected at lower heights and furthest horizontal reaches. Further investigation would be required to determine the source of these errors, as the DHM hand locations represent both motion capture sensor and kinematic modeling from the Process Simulate software. Overall, body tracking with the Vive resulted in marginal hand location errors and represents a promising approach moving forward.
Event Type
Lecture
TimeTuesday, October 14th2:10pm - 2:30pm CDT
LocationGrand C/D South
Occupational Ergonomics