A Study on Human Gait Kinematic Validation in Multi-Kinect v2 Environment

Abstract

Assessment of lower extremity joint angles is a crucial task in clinical gait analysis. Microsoft Kinect (v2) has become very popular vision-based motion tracking system due to its low cost. But, in kinematic gait parameter assessment, single Kinect (v2) set-up was proved to be unworthy from the previous studies. The present study investigates three different case studies in determining the validity of multi-Kinect set-up in assessing lower extremity joint angle where Inertial Measurement Unit was used as the gold standard. A simulation framework, OpenSim was used for joint angle generation using inverse kinematics. Substantial reduction of RMSE was observed in our case studies compared to state-of-art methods.