An inexpensive solution for motion analysis

Abstract

This study investigated the reliability of the recently released low-cost NaturalPoint OptiTrack 250e camera system across different measurement designs. Results are compared to an already well-established motion capture system from Vicon Motion Systems Ltd (Oxford, UK). The OptiTrack performed well across measurement conditions. Provided with the AMASS software kit from C-Motion (Germantown, MD, USA), nine distances from three rigid bodies (ten markers) were used to calculate measurement accuracy. Independent t-tests, a one-way multivariate analysis of variance, intra-class correlation coefficients, and the standard error of measurement were computed for all conditions to evaluate the differences and the reliability of the systems. The results suggest that the NaturalPoint OptiTrack 250e camera system is a reliable working system that can certainly be used in biomechanics and other related fields.

Feedback motion control of a spatial double pendulum manipulator relying on swept laser based pose estimation

“…The accuracy and precision of the OptiTrack motion tracking system was assessed in and. [43,44,50,51] In, [43] the authors report that the absolute error was under 1 mm in the 135 cubic metres measurement area. The results in [43,44] show that the absolute error can be essential when the camera system is used in large area.…”

Automata Learning for Automated Test Generation of Real Time Localization Systems

“…The experiment was conducted at the testing facility of the TUHH Institute for Technical Logistics on a rectangular area of 80 m 2 . To gain the ground truth position of the entity under localization, an optical motion capture system is installed [19]. This reference system later allows us to determine the localization error of the RTLS.…”

Vision-Based Navigation for Control of Micro Aerial Vehicles

“…In the aerial robotics research domain, quadcopters are typically localized using the external positioning system VICON system [14,18,21]. Recent work [5], however, has demonstrated the use of the motion capturing system Optitrack as an inexpensive solution to provide 6 DOF accuracy. Optitrack is used to detect infrared light reflected from markers on the MAV.…”