A Single LED Visible Light Positioning System Based on Geometric Features and CMOS Camera
Cheng Han, Chunxian Xiao, Yongqing Ji, Jianmin Ni, Tongyao Wang
Abstract
A visible light positioning system based on the optical camera communication is introduced, in which the ID data is transmitted by a circular light emitting diode (LED) and captured using common smartphone camera. We propose a planes intersection-line scheme based on the geometric features of LED projection to improve the positioning accuracy, whether the receiver is horizontal or tilted. The experimental results show that the proposed positioning scheme achieves high positioning accuracy with 3D average positioning errors of 5.58 and 5.44 cm for the heights of 1.45 and 1.75 m respectively, when the two tilted angles ranges of the receiver are ±45° and ±40°.
Topics & Concepts
Light-emitting diodeIntersection (aeronautics)Visible light communicationComputer scienceComputer visionArtificial intelligenceProjection (relational algebra)LED lampCMOS sensorLine (geometry)Structured lightOpticsImage sensorPhysicsEngineeringMathematicsGeometryAlgorithmAerospace engineeringOptical Wireless Communication TechnologiesIndoor and Outdoor Localization TechnologiesOptical measurement and interference techniques