Recent advances in wearable motion sensors, particularly inertial measurement units (IMUs), have opened new possibilities for motion analysis, providing a portable and cost-effective alternative to traditional gait analysis systems. While IMUs have by now become well-established orientation trackers, they face significant challenges in estimating position. The VIVE Ultimate Tracker is a wearable IMU-based device embedding an AI-powered dual wide-field-of-view (FOV) camera system providing its 3D position and orientation with respect to an absolute reference system defined by spatial mapping. Although originally designed for gaming purposes, it may represent a promising solution for mobile motion analysis. The study aimed at assessing the accuracy of the VIVE Ultimate Tracker against a camera-based optoelectronic system both in controlled conditions and during gait. Maximum angular and linear displacement errors during planar rotations performed at three different velocities on a 3 DoF hinged plank were 2.13° and 22.2 mm, respectively. When a subject walked at three walking speeds, the maximum pelvis position errors were 44 mm, 21 mm, 11 mm along the antero-posterior, medio-lateral and vertical directions. Preliminary results suggest the potential of this emerging technology for mobile motion analysis purposes.
The potential of the VIVE Ultimate Tracker in Movement Analysis applications: accuracy of single degree of freedom motions and pelvis motion during gait / Occhipinti, C; Bejaoui, I; Porco, I. G.; Solinas, S.; Picerno, P; De Marchis, C; Della Croce, U. - (2025).
The potential of the VIVE Ultimate Tracker in Movement Analysis applications: accuracy of single degree of freedom motions and pelvis motion during gait
Occhipinti, C;Porco, I. G.;Solinas, S.;Picerno, P;Della Croce, U
2025-01-01
Abstract
Recent advances in wearable motion sensors, particularly inertial measurement units (IMUs), have opened new possibilities for motion analysis, providing a portable and cost-effective alternative to traditional gait analysis systems. While IMUs have by now become well-established orientation trackers, they face significant challenges in estimating position. The VIVE Ultimate Tracker is a wearable IMU-based device embedding an AI-powered dual wide-field-of-view (FOV) camera system providing its 3D position and orientation with respect to an absolute reference system defined by spatial mapping. Although originally designed for gaming purposes, it may represent a promising solution for mobile motion analysis. The study aimed at assessing the accuracy of the VIVE Ultimate Tracker against a camera-based optoelectronic system both in controlled conditions and during gait. Maximum angular and linear displacement errors during planar rotations performed at three different velocities on a 3 DoF hinged plank were 2.13° and 22.2 mm, respectively. When a subject walked at three walking speeds, the maximum pelvis position errors were 44 mm, 21 mm, 11 mm along the antero-posterior, medio-lateral and vertical directions. Preliminary results suggest the potential of this emerging technology for mobile motion analysis purposes.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
