Yongze Xu, Zhe Chen. Visible Light Three-Dimensional Positioning System Based on Light-Emitting Diode and Image Sensor[J]. Laser & Optoelectronics Progress, 2023, 60(19): 1906004
- Laser & Optoelectronics Progress
- Vol. 60, Issue 19, 1906004 (2023)
Fig. 1. Process of coordinate system conversion in pinhole imaging model
Fig. 2. Flow chart of proposed VLP system
Fig. 3. Flow chart of stripe searching algorithm based on bisection and double pointers
Fig. 4. Different sizes of stirpes at different distances. (a) Distance is
Fig. 5. Three-dimensional distributions of real coordinates and calculated coordinates of positioning points in simulation experiments. (a) Whole positioning points; (b) height is 0; (c) height is
Fig. 6. Influence of bias error on positioning accuracy
Fig. 7. Influence of angle error on positioning accuracy
Fig. 8. Experimental environment and equipment. (a) Experimental environment; (b) LED; (c) positioning device; (d) retractable poles
Fig. 9. Three-dimensional distributions of real coordinates and calculated coordinates of positioning points in physical experiments. (a) Whole positioning points; (b) height is 0; (c) height is
Fig. 10. Positioning error distribution maps at different heights. (a) Height is 0; (b) height is
Fig. 11. CDF of positioning error
Fig. 12. Stripe searching time of different algorithms
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Table 1. Parameters of experiments
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Table 2. Stripe search time and comparative analysis of different algorithms
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