A Multi-Angle Camera Assisted Received Signal Strength Algorithm for Visible Light Positioning

Yang, Yang; Li, Chengyang; Bao, Rongzhen; Guo, Caili; Feng, Chunyan; Cheng, Julian

doi:10.1109/jlt.2021.3117408

Cited by 11 publications

(6 citation statements)

References 37 publications

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“…Most existing VLP algorithms achieve positioning by treating indoor luminaires as point sources in indoor scenarios. Hence, they typically need three or more luminaires for positioning [22]- [24]. The performance of positioning may be limited by the filed of view (FOV) of the user.…”

Section: A Related Workmentioning

confidence: 99%

“…The points on the ellipse contour, the projection point of the luminaire's center, and the projection point of the mark point are all extracted, and the extracted points on the contour are used to fit the elliptic curve equation with the least squares fitting. With this equation, the center of the ellipse can also be obtained according to (24) when the center or the mark point is not detected. For images under the short ET, a binarization process is performed in each ROI.…”

Section: B Image Processingmentioning

confidence: 99%

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Positioning Using Visible Light Communications: A Perspective Arcs Approach

Zhu¹,

Guo²,

Bao³

et al. 2022

Preprint

Self Cite

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Visible light positioning (VLP) is an accurate indoor positioning technology that uses luminaires as transmitters.In particular, circular luminaires are a common source type for VLP, that are typically treated only as point sources for positioning, while ignoring their geometry characteristics. In this paper, the arc feature of the circular luminaire and the coordinate information obtained via visible light communication (VLC) are jointly used for positioning, and a novel perspective arcs approach is proposed for VLC-enabled indoor positioning. The proposed approach does not rely on any inertial measurement unit and has no tilted angle limitaion at the user. First, a VLC assisted perspective circle and arc algorithm (V-PCA) is proposed for a scenario in which a complete luminaire and an incomplete one can be captured by the user. Based on plane and solid geometry theory, the relationship between the luminaire and the user is exploited to estimate the orientation and the coordinate of the luminaire in the camera coordinate system.Then, the pose and location of the user in the world coordinate system are obtained by single-view geometry theory.Considering the cases in which parts of VLC links are blocked, an anti-occlusion VLC assisted perspective arcs algorithm (OA-V-PA) is proposed. In OA-V-PA, an approximation method is developed to estimate the projection of the luminaire's center on the image and, then, to calculate the pose and location of the user. Simulation results show that the proposed indoor positioning algorithm can achieve a 90th percentile positioning accuracy of around 10 cm. Moreover, an experimental prototype is implemented to verify the feasibility. In the established prototype,

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Section: A Related Workmentioning

confidence: 99%

Section: B Image Processingmentioning

confidence: 99%

Positioning Using Visible Light Communications: A Perspective Arcs Approach

Zhu¹,

Guo²,

Bao³

et al. 2022

Preprint

Self Cite

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show abstract

“…[2][3][4] Depending on the types of the devices used for optical signal detection, the VLP schemes can be classified into two categories. The first one is referred to as the imaging VLP (iVLP) technologies, [5][6][7][8] which employs an image sensor (IS) as the front-end of the receiver to detect the transmitted signals. However, powerful iVLP solutions usually rely on the fast image detection, recognition, and tracking procedures, 9 which are costly from an implementation perspective.…”

Section: Introductionmentioning

confidence: 99%

Multi-directional light-emitting diode aided visible light positioning system exploiting regular pyramid: design and demonstration

Xie

Luo

et al. 2023

Opt. Eng.

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.The existing multi-directional light-emitting diode (MD-LED) aided visible light positioning (VLP) scheme is difficult to physically implement. An improved MD-LED based VLP scheme is proposed, in which we devise an integrated single lamp that consists of a regular pyramid metal block and multiple standard Lambert radiation light-emitting diode chips, which are mounted on different planes of the metal block. In addition, a localization algorithm exploiting received signal strength ratio based on linear least squares is provided. Simulation and experiment results show that this scheme can achieve an average localization accuracy of 5 and 11 cm, respectively, at a known height in the realistic mobile user scenario with a tilting receiver. Compared with the existing MD-LED aided VLP scheme, this scheme implements the first ever prototype MD-LED lamp and has a low implementation cost.

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“…In recent years, various high-precision methods and various positioning systems using smartphone camera as the receiver have been proposed [23]- [28]. A detailed overview on the positioning approaches and the corresponding accuracy were presented in references [29] and [30].…”

Section: Introductionmentioning

confidence: 99%

Indoor 3-Dimensional Visible Light Positioning: Error Metric and LED Layout Optimization

Xu¹,

Huang²,

Chen³

2022

Preprint

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We consider 3-dimensional (3D) visible light positioning (VLP) based on smartphone camera in an indoor scenario. Based on the positioning model in the quantized pixel-domain, we characterize the 3D normalized positioning error metric (NPEM) through the partial derivative of the positioning function, and evaluate the NPEM for horizontal and non-horizontal receiver camera positions. Moreover, under horizontal receiver terminal position, we explore the relationship between the NPEM and the light-emitting diode (LED) cell layout, approximate the relationship between the NPEM and the number of LEDs captured by the camera, and evaluate the approximation accuracy according to the simulated positioning error. Based on the approximation results, we optimize the LED transmitter cell layout to minimize NPEM assuming structured square cell layouts with certain distance parameters.

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A Multi-Angle Camera Assisted Received Signal Strength Algorithm for Visible Light Positioning

Cited by 11 publications

References 37 publications

Positioning Using Visible Light Communications: A Perspective Arcs Approach

Positioning Using Visible Light Communications: A Perspective Arcs Approach

Multi-directional light-emitting diode aided visible light positioning system exploiting regular pyramid: design and demonstration

Indoor 3-Dimensional Visible Light Positioning: Error Metric and LED Layout Optimization

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