scholarly journals Image Sensor Based Visible Light Positioning System with Improved Positioning Algorithm

IEEE Access ◽  
2017 ◽  
pp. 1-1 ◽  
Author(s):  
Ran Zhang ◽  
Wen-De Zhong ◽  
Ke-mao Qian ◽  
De-hao Wu
Keyword(s):  
Visible Light ◽  
Image Sensor ◽  
Positioning System ◽  
Positioning Algorithm

scholarly journals High Precision Indoor Visible Light Positioning Algorithm Based on Double LEDs Using CMOS Image Sensor

2019 ◽  
Vol 9 (6) ◽  
pp. 1238 ◽  
Author(s):  
Weipeng Guan ◽  
Xinjie Zhang ◽  
Yuxiang Wu ◽  
Zekun Xie ◽  
Jingyi Li ◽  
...  
Keyword(s):  
Visible Light ◽  
Real Time ◽  
Computing Time ◽  
Computational Cost ◽  
Cmos Image Sensor ◽  
Indoor Positioning ◽  
Image Sensor ◽  
Positioning System ◽  
Satisfactory Performance ◽  
Positioning Algorithm

Visible Light Positioning (VLP) is widely recognized as a cost-effective solution for indoor positioning with increasing demand. However, the nonlinearity and highly complex relationship between three-dimensional world coordinate and two-dimensional image coordinate hinders the good performance of image-sensor-based VLP. Therefore, there is a need to develop effective VLP algorithms to locate the positioning terminal using image sensor. Besides, due to the high computational cost of image processing, most existing VLP systems do not achieve satisfactory performance in terms of real-time ability and positioning accuracy, both of which are significant for the performance of indoor positioning system. In addition, the accurate identification of the ID information of each LED (LED-ID) is important for positioning, because if the LED-ID is not recognized well, the positioning can only be achieved in a particular positioning unit and cannot be applied to a large scene with many LEDs. Therefore, an effective image-sensor-based double-light positioning system is proposed in this paper to solve the above problems. We also set up relevant experiments to test the performance of the proposed system, which utilizes the rolling shutter mechanism of the Complementary Metal Oxide Semiconductor (CMOS) image sensor. Machine learning was used to identify the LED-ID for better results. Simulation results show that the proposed double-light positioning system could deliver satisfactory performance in terms of both the real-time ability and the accuracy of positioning. Moreover, the proposed double-light positioning algorithm has low complexity and takes the symmetry problem of angle into consideration, which has never been considered before. Experiments confirmed that the proposed double-light positioning system can provide an accuracy of 3.85 cm with an average computing time of 56.28 ms, making it a promising candidate for future indoor positioning applications.

scholarly journals Multilateration Approach for Wide Range Visible Light Indoor Positioning System Using Mobile CMOS Image Sensor

2021 ◽  
Vol 11 (16) ◽  
pp. 7308
Author(s):  
Md Habibur Rahman ◽  
Mohammad Abrar Shakil Sejan ◽  
Wan-Young Chung
Keyword(s):  
Visible Light ◽  
Real Time ◽  
Indoor Positioning ◽  
Image Sensor ◽  
Computational Time ◽  
Positioning System ◽  
Horizontal Distance ◽  
Large Area ◽  
Positioning Systems ◽  
Wide Range

Visible light positioning (VLP) is a cost-effective solution to the increasing demand for real-time indoor positioning. However, owing to high computational costs and complicated image processing procedures, most of the existing VLP systems fail to deliver real-time positioning ability and better accuracy for image sensor-based large-area indoor environments. In this study, an effective method is proposed to receive coordinate information from multiple light-emitting diode (LED) lights simultaneously. It provides better accuracy in large experimental areas with many LEDs by using a smartphone-embedded image sensor as a terminal device and the existing LED lighting infrastructure. A flicker-free frequency shift on–off keying line coding modulation scheme was designed for the positioning system to ensure a constant modulated frequency. We tested the performance of the decoding accuracy with respect to vertical and horizontal distance, which utilizes a rolling shutter mechanism of a complementary metal-oxide-semiconductor image sensor. The experimental results of the proposed positioning system can provide centimeter-level accuracy with low computational time, rendering it a promising solution for the future direction of large-area indoor positioning systems.

scholarly journals A High Efficient Code for Visible Light Positioning System Based on Image Sensor

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 77762-77770
Author(s):  
Ruotong Qv ◽  
Lihui Feng ◽  
Aiying Yang ◽  
Peng Guo ◽  
Bo Lin ◽  
...  
Keyword(s):  
Visible Light ◽  
Image Sensor ◽  
Positioning System ◽  
High Efficient ◽  
Efficient Code

Improved visible light communication positioning algorithm based on image sensor tilting at room corners

2018 ◽  
Vol 12 (10) ◽  
pp. 1201-1206 ◽  
Author(s):  
Minglei Fu ◽  
Weijun Zhu ◽  
Zichun Le ◽  
Dmytro Manko
Keyword(s):  
Visible Light ◽  
Visible Light Communication ◽  
Image Sensor ◽  
Positioning Algorithm
Sign in / Sign up

Export Citation Format

Share Document