Summary
International Conference on Emerging Technologies for Communications
2022
Session Number:S9
Session:
Number:S9-7
Smartphone Camera-Based Indoor Positioning System Utilizing Optical Diffusion Filter
Reo Okawara, Tadashi Ebihara, Naoto Wakatsuki, Keiichi Zempo, Koichi Mizutani,
pp.-
Publication Date:2022/11/29
Online ISSN:2188-5079
Summary:
A user's indoor location is essential information for linking the many data circulating in the world. Positioning systems based on visible light communication have the potential to provide accurate navigation using existing smartphones. This paper propose a positioning system that utilizes a cross-screen filter and a single camera that captures distant light sources. The transmitter outputs modulated 2D coordinate data and the receiver receives the coordinate information of each light source through rolling shutter effect. Then, the coordinate information and the distance between the light source spots on the image sensor are integrated to measure the distance between the transmitter and receiver. The experiment shows that if the distance between the transmitter and receiver is more than 2,000 mm, the distance can be measured with an error of 30 mm or less and suggests that the distance can be measured with a small error if the distance between the transmitter and receiver is large.