Passive Multi-Target Visible Light Positioning Based on Multi-Camera Joint Optimization
Abstract
Camera-based visible light positioning (VLP) has emerged as a promising indoor positioning technique. However, the need for dedicated luminaire infrastructure and on-target cameras in existing algorithms may limit their scalability and increase deployment costs. To address these limitations, this letter proposes a passive VLP algorithm based on Multi-Camera Joint Optimization (MCJO). In the considered system, multiple ceiling-mounted pre-calibrated cameras continuously capture images of targets with unmodulated point light sources, and can simultaneously localize these targets at the server. In particular, MCJO comprises two stages: It first estimates target positions via linear least squares (LLS) from multi-view projection rays; then refines these positions through nonlinear joint optimization to minimize the reprojection error. Simulation results show that MCJO can achieve millimeter-level accuracy, with an improvement of 19% over an LLS-based state-of-the-art algorithm. Experimental results further show that MCJO achieves an average position error as low as 5.63 mm.
Cite
@article{arxiv.2506.02418,
title = {Passive Multi-Target Visible Light Positioning Based on Multi-Camera Joint Optimization},
author = {Wenxuan Pan and Yang Yang and Dong Wei and Meng Zhang and Zhiyu Zhu},
journal= {arXiv preprint arXiv:2506.02418},
year = {2025}
}
Comments
This manuscript has been accepted for publication in the IEEE Communications Letters [DOI: 10.1109/LCOMM.2025.3598352]