Fig. 6: Long-time motion capture and velocity measurement results.
From: A wearable motion capture device able to detect dynamic motion of human limbs
a The subject wearing a device on his shank keeps running on a treadmill at the speed of 10 km/h for about 30 min and then gradually stop for another 7 min. b–c The tri-axis motion velocity measured by our device and inertial method, respectively (b), and the corresponding errors (c). d–e The magnitude of motion acceleration measured by our device and inertial method, respectively (d), and the corresponding errors (e). High dynamic motion with motion acceleration more than 70 m/s2 is observed. f–i The attitude estimation results of roll angle γ (f) and pitch angle θ (h), respectively, and the corresponding attitude errors by our device and inertial method, respectively (g and i). Motion capture results of optical VICON system are used as reference values.
