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Automatic driving vehicle tracking and positioning method based on OCC

A technology of automatic driving and positioning method, which is applied in the field of visible light communication and intelligent transportation, can solve the problems of high complexity and high hardware requirements, and achieve the effect of high feasibility, wide application scenarios and reduced interference

Active Publication Date: 2020-09-01
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the positioning accuracy of this system is high, it has high complexity and high hardware requirements, and the large amount of data processing and storage requirements of auxiliary sensors such as gyroscopes and angle sensors still need further research

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  • Automatic driving vehicle tracking and positioning method based on OCC
  • Automatic driving vehicle tracking and positioning method based on OCC
  • Automatic driving vehicle tracking and positioning method based on OCC

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Embodiment Construction

[0040] In order to make the technical solutions, advantages and objectives of the present invention clearer and more clear, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and detailed operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0041] As shown in Figure 1, the OCC-based autonomous vehicle tracking and positioning scenario is as follows: Vehicle A ~ Vehicle D is driving on a road with smart traffic lights and smart street lights a ~ c; Take vehicle D as an example for analysis, vehicle D can The visible light signals emitted by the smart traffic lights, smart street lights a, smart street lights b, and the taillight LEDs of vehicles A to C are captured by the on-board CMOS image sensor. The ...

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Abstract

The invention relates to an automatic driving vehicle tracking and positioning method based on OCC. The method comprises the following steps: after position coordinates of a light source LED in a world coordinate system are subjected to Manchester encoding and OOK modulation, driving the light source LED by a driving circuit to emit a visible light signal with high-speed brightness change; enabling an automatic driving vehicle to obtain an image containing information of at least one light source LED through a vehicle-mounted CMOS image sensor, and detecting the LED light spots in the image through Hough circle transformation; tracking and decoding the detected LED light spots to obtain position coordinates of at least one light source LED in a world coordinate system; and calculating theposition information of the automatic driving vehicle according to the coordinate information of the light source LED. According to the invention, the LED false detection probability can be reduced, the data processing time is saved, and the system positioning precision is effectively improved.

Description

Technical field [0001] The invention belongs to the field of visible light communication and intelligent transportation, and relates to an OCC-based automatic driving vehicle tracking and positioning method. Background technique [0002] Optical Camera Communication (OCC) is a type of Visible Light Communication (VLC) technology. It is a wireless optical communication technology that receives optical signals through image sensors. It is free from radio frequency interference, does not require spectrum certification, The advantages of no electromagnetic radiation, low time delay, and environmental protection can effectively make up for the deficiencies of wireless radio frequency communication. It has huge development potential in the future intelligent transportation, indoor positioning and LAN communications. Therefore, OCC has attracted the attention of many researchers and has become one of the research hotspots in the VLC field. [0003] After the National Development and Refo...

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Application Information

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IPC IPC(8): G01S1/70G01S5/16G01B11/00H04B10/116
CPCG01S1/7038G01S5/16G01B11/002H04B10/116
Inventor 石文孝王静怡邵馨蕊李莉高跃红张佳栋
Owner JILIN UNIV