Indoor visible light positioning method based on three light-emitting diodes and an image sensor

Chen Qian; Lihui Feng; Aiying Yang; Peng Guo; Huichao Lv

doi:10.1117/1.OE.57.11.116106

29 November 2018 Indoor visible light positioning method based on three light-emitting diodes and an image sensor

Chen Qian, Lihui Feng, Aiying Yang, Peng Guo, Huichao Lv

Author Affiliations +

Funded by: National Natural Science Foundation of China (NSFC), Natural Science Foundation of China

Optical Engineering, Vol. 57, Issue 11, 116106 (November 2018). https://doi.org/10.1117/1.OE.57.11.116106

Abstract

Indoor positioning systems have been gaining traction in recent years, and visible light positioning (VLP) may be the most promising technology. We propose an indoor VLP method based on three light-emitting diodes and an image sensor. We regard the lamp plane composed of three lamps as a rigid body and the process of lamp plane imaging as the process of rotating and scaling the rigid body. By solving the matrix transformation, the two-dimensional (2-D) coordinates and azimuth angle of the image sensor are obtained with the focal length of the image sensor unknown. Azimuth angle plays an important role in other positioning methods, such as pedestrian navigation methods. The experimental results show that the 2-D positioning maximum error is only 3.21 cm in the horizontal condition, and the azimuth angle error is within 5 deg when the tilt angle is <7 deg.

Citation Download Citation

Chen Qian, Lihui Feng, Aiying Yang, Peng Guo, and Huichao Lv "Indoor visible light positioning method based on three light-emitting diodes and an image sensor," Optical Engineering 57(11), 116106 (29 November 2018). https://doi.org/10.1117/1.OE.57.11.116106

Received: 19 June 2018; Accepted: 26 October 2018; Published: 29 November 2018

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