RT Journal Article
T1 Precise Local Positioning of a Mobile Device Based on Pose Reconstruction From a Visible Light Beacon
A1 Gutiérrez, Juan D.
A1 Aguilera, Teodoro
A1 Álvarez, Fernando J.
A1 Morera, Jorge
A1 Aranda, Fernando J.
K1 Cameras
K1 Image reconstruction
K1 Systems operation
K1 Smart phones
K1 Scalability
K1 Digital cameras
K1 Computer vision
K1 Local positioning
K1 Mobile device
K1 Pose reconstruction
K1 Visible light
AB This paper proposes an indoor positioning system for mobile devices using visible light beacons. The device’s camera is used to acquire images in which the beacon appears. An algorithm processes these images to reconstruct the camera’s pose at the photo acquisition time. This reconstruction allows for estimating the camera position accurately. The system operation is tested by a simulator based on Blender. This simulator allows for setting the beacon and camera characteristics, taking samples in rooms of different dimensions and analysing and studying the results obtained. In addition, an Android application for the real system has been developed to take samples and analyse them to estimate the mobile device’s position. Finally, a comparison between the real and simulated systems is made. For this purpose, a test bench grid of 0.8m×1.1m with 391 test points is designed. The simulator offers an average fidelity 97% and can automate the sampling process. An average error of 7.49e−3m and coverage of 100% are achieved with the camera and LED panel facing each other. The test bench real system achieves an average positioning error of less than 20.44e−3m , having a coverage close to 80% and decreasing performance when the beacons are not fully captured. Finally, an experimental study of the system scalability has been carried out in a test room where four coded beacons have been deployed covering an area of 2.4×3.6m2 . Results over two different trajectories show reasonable losses of accuracy and coverage compared to the simulation and test bench, especially in the transition between beacons.
PB IEEE
SN 2169-3536
YR 2024
FD 2024-02-01
LK https://hdl.handle.net/10347/41030
UL https://hdl.handle.net/10347/41030
LA eng
NO J. D. Gutiérrez, T. Aguilera, F. J. Álvarez, J. Morera and F. J. Aranda, "Precise Local Positioning of a Mobile Device Based on Pose Reconstruction From a Visible Light Beacon," in IEEE Access, vol. 12, pp. 20517-20529, 2024, doi: 10.1109/ACCESS.2024.3361326
NO This work was supported in part by MCIN/AEI/10.13039/501100011033 and European Union NextGenerationEU/PRTR under Project TED2021-129310B-I00, and in part by MCIN/AEI/10.13039/501100100011033 and FEDER—A way to make Europe under Project PID2021-122642OB-C42.
DS Minerva
RD 28 abr 2026