Visible light dynamic positioning method based on optical flow method detection and Bayesian forecasting

Abstract

The invention discloses a visible light dynamic positioning method based on optical flow method detection and Bayesian forecasting. According to the dynamic positioning method, an optical flow methodand a Bayesian forecasting method are utilized to detect a target in each frame of image of a moving object and calculate the distance so as to carry out dynamic positioning, wherein the optical flowmethod detection process comprises the steps of image acquisition, preprocessing and edge detection; the traveling speed displacement data of a target are acquired by utilizing an LED lamp and a high-speed camera arranged in front of and behind the moving object so as to obtain dynamic positioning information; and a search center of a next frame is set through Bayesian forecasting, the Bayesian forecasting process comprises the steps of setting the search center, forecasting the mass center position and finding out a target output mass center, the dynamic positioning method is simple and feasible, the hardware cost is low, the positioning precision is high, a system is stable, and the dynamic positioning method is not susceptible to interference and influence and has a wide application prospect.

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...

AI Technical Summary

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

Images