Abstract
The usage of VR gear in mixed reality applications demands a high position and orientation accuracy of all devices to achieve a satisfying user experience. This paper investigates the system behaviour of the VR system HTC Vive Pro at a testing facility that is designed for the calibration of highly accurate positioning instruments like geodetic total stations, tilt sensors, geodetic gyroscopes or industrial laser scanners. Although the experiments show a high reproducibility of the position readings within a few millimetres, the VR system has systematic effects with magnitudes of several centimetres. A tilt of about 0.4° of the reference plane with respect to the horizontal plane was detected. Moreover, our results demonstrate that the tracking algorithm faces problems when several lighthouses are used.
Highlights
Virtual Reality (VR) has become a state-of-the-art tool for visualisation, gaming and education in virtual environments [1]
VR System HTC Vive Pro is sold with a Head-Mounted Display (HMD), two controllers and two base stations (Figure 1c)
A major issue that was revealed by Niehorster [4] for the lighthouse system of the first generation was a tilt in the horizontal reference plane that appeared to be very unstable
Summary
Virtual Reality (VR) has become a state-of-the-art tool for visualisation, gaming and education in virtual environments [1]. These tracking approaches differ from their possible use cases, because some are designed for a quick and user-friendly setup and some are designed for a stable and accurate simulation In both cases manufacturers of VR systems usually do not provide information about the achievable pose accuracy of their devices. Due to the concept of the tracking approach and the user feedback, a high accuracy in the pose estimation is assumed for this HTC Vive system It is commonly used in various technical applications, for instance, for motion tracking in a robot control system [2]. Valve released its own VR System called the Valve Index Both state-of-the-art systems use the same lighthouse infrastructure and the same SteamVR software for position and orientation estimation and distribution to third-party software [7].
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