A Visible Light Dynamic Localization Method Based on Optical Flow Detection and Bayesian Prediction

A dynamic positioning and visible light technology, applied in the interpretation of photos, beacon systems using electromagnetic waves, instruments, etc., to achieve high feasibility, improve accuracy and reliability, and simple and easy methods

Inactive Publication Date: 2019-12-10
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although, with more and more high-speed cameras, this problem can be solved, but it is difficult to introduce it in the market at a reasonable price

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  • A Visible Light Dynamic Localization Method Based on Optical Flow Detection and Bayesian Prediction
  • A Visible Light Dynamic Localization Method Based on Optical Flow Detection and Bayesian Prediction
  • A Visible Light Dynamic Localization Method Based on Optical Flow Detection and Bayesian Prediction

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Embodiment

[0056] In this embodiment, the visible light dynamic positioning method based on optical flow detection and Bayesian prediction described in the present invention is used to realize indoor positioning. figure 1 It is a flowchart of a visible light dynamic positioning method based on optical flow detection and Bayesian prediction disclosed in the present invention.

[0057] Such as figure 1 As shown, the dynamic positioning fusion method in the example of the present invention includes the detection and positioning of the target position in the image sequence by using the optical flow method, and the estimation of the center of mass position of the target by Bayesian prediction, and the fusion of the positioning method information.

[0058] Specifically, a visible light dynamic positioning method based on optical flow detection and Bayesian prediction in an embodiment of the present invention includes the following steps:

[0059] S1. Output the image sequence containing the d...

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Abstract

The invention discloses a visible light dynamic positioning method based on optical flow method detection and Bayesian prediction. The dynamic positioning method utilizes the optical flow method and Bayesian prediction method to detect objects in each frame of images for moving objects, calculate The distance is used for dynamic positioning. Among them, the optical flow method detection process includes image acquisition, preprocessing, and edge detection; use LED lights and high-speed cameras mounted on the front and back of the moving object to collect the speed and displacement data of the target to obtain dynamic positioning information; through Bayesian prediction sets the search center of the next frame. Bayesian prediction includes setting the search center, predicting the position of the centroid, and finding the target output centroid. This method is simple, low in hardware cost, and high in positioning accuracy. The system It is stable, not easily affected by interference, and has broad application prospects.

Description

technical field [0001] The invention relates to the technical field of visible light positioning and measurement, in particular to a visible light dynamic positioning method based on optical flow detection and Bayesian prediction. Background technique [0002] In recent years, semiconductor lighting technology known as "green lighting" has developed rapidly. Compared with traditional lighting sources such as incandescent lamps, LEDs have the advantages of low power consumption, long life, small size, and environmental protection. At the same time, LED has the advantages of good modulation performance and high response sensitivity. The signal is loaded on the LED with a high frequency that cannot be recognized by the human eye for transmission, and then a technology that can realize the integration of lighting and communication-visible light communication technology is born. [0003] Optical flow is a simple and practical expression of image motion, usually defined as the a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C11/04G01S1/70G06K9/40G06K9/46
CPCG01C11/04G01S1/70G06V10/30G06V10/50
Inventor 吴玉香康亦琛关伟鹏陈昕黄谋潇刘梓璇方良韬
Owner SOUTH CHINA UNIV OF TECH
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