2023-12-21 カリフォルニア大学サンディエゴ校(UCSD)
◆これにより、仮想ゲーム体験の向上から職場の安全性向上まで広範な応用が期待されます。システムは動的で照明の悪い環境でも高い精度を提供し、1メートルのコンパクトモジュールに収められ、テレビやサウンドバーなどの電子デバイスに容易に組み込むことが可能です。
◆研究者たちは、90%の精度を達成し、最先端の位置情報システムよりも少なくとも8倍優れていると報告しており、現在はシステムの改良に取り組んでいます。
＜関連情報＞
- https://today.ucsd.edu/story/wireless-tracking-system-could-help-improve-the-xr-experience
- https://arxiv.org/abs/2307.12512
XRLoc：XR 導入を実現する正確な UWB 測位 XRLoc: Accurate UWB Localization to Realize XR Deployments
Aditya Arun, Shunsuke Saruwatari, Sureel Shah, Dinesh Bharadia
arXiv last revised: 21 Nov 2023
DOI:https://doi.org/10.48550/arXiv.2307.12512
Abstract
Understanding the location of ultra-wideband (UWB) tag-attached objects and people in the real world is vital to enabling a smooth cyber-physical transition. However, most UWB localization systems today require multiple anchors in the environment, which can be very cumbersome to set up. In this work, we develop XRLoc, providing an accuracy of a few centimeters in many real-world scenarios. This paper will delineate the key ideas which allow us to overcome the fundamental restrictions that plague a single anchor point from localization of a device to within an error of a few centimeters. We deploy a VR chess game using everyday objects as a demo and find that our system achieves 2.4 cm median accuracy and 5.3 cm 90th percentile accuracy in dynamic scenarios, performing at least 8× better than state-of-art localization systems. Additionally, we implement a MAC protocol to furnish these locations for over 10 tags at update rates of 100 Hz, with a localization latency of ∼1 ms.
