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Title:
UNMANNED AERIAL VEHICLE POSITIONING METHOD AND SYSTEM BASED ON SCREEN OPTICAL COMMUNICATION
Document Type and Number:
WIPO Patent Application WO/2022/121024
Kind Code:
A1
Abstract:
An unmanned aerial vehicle positioning method and system based on screen optical communication. The method comprises: selecting an electronic screen, and setting marker images on the electronic screen to be symmetrical; arranging an image collector, comprising an unmanned aerial vehicle, an image acquisition module disposed on the unmanned aerial vehicle, and a fixing bracket for adjusting the height of the unmanned aerial vehicle; a camera being arranged on the image acquisition module, and being configured to acquire the marker images on the electronic screen to obtain a video stream comprising marker pictures; constructing a deep learning model, and identifying the marker pictures to obtain a predicted position of the marker images in the pictures; performing image processing to obtain coordinates corresponding to a marker pattern; performing distance measurement to obtain the linear distance between the center of the marker pattern and the camera; and performing angle measurement, and obtaining the actual distance between the camera and the electronic screen, so as to complete the positioning of the unmanned aerial vehicle. The system can improve the positioning accuracy and the effect range of the camera.

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Inventors:
WEN KAO (CN)
ZHAO YUBIN (CN)
XU CHENGZHONG (CN)
LIU DUNGE (CN)
Application Number:
PCT/CN2020/140729
Publication Date:
June 16, 2022
Filing Date:
December 29, 2020
Export Citation:
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Assignee:
SHENZHEN INST OF ADV TECH CAS (CN)
International Classes:
G06T7/73; G01C11/36; G05D1/10
Foreign References:
CN110017841A2019-07-16
CN106153008A2016-11-23
CN102023003A2011-04-20
CN106681353A2017-05-17
CN109360240A2019-02-19
US20200066142A12020-02-27
US20180096183A12018-04-05
Attorney, Agent or Firm:
BEIJING ZHONG XUN TONG DA INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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