Vehicle speed and position detection method and apparatus

Abstract

The invention discloses a vehicle speed and position detection method and apparatus which are realized based on motion fuzzy image analysis. The method comprises the following steps: identifications arranged on a pavement are shot through an imaging unit installed outside a vehicle, wherein the height of the imaging unit and the included angle with the ground are known so that a complete identification image can be acquired; and the pavement identifications themselves are white round spots which are distributed site by side and have known diameters, when the vehicle moves, the imaging unit and the pavement identifications move relative to each other, due to quite short exposure time, shot identification images represent white stripes which are distributed side by side and have widths equal to the diameters of the round spots, the white stripes are combined with the dark-color pavement to form bar codes, and different white spot distribution form different bar codes, for storing different position information for a control unit to identify. Speed information of the speed is obtained by analyzing and calculating fuzzy states of the shot identification images through the control unit, and position information of the vehicle is obtained by identifying and analyzing the identification images storing the position information.

Description

technical field [0001] The present invention relates to the field of vehicle detection, and more particularly, to a method and device for detecting vehicle speed and position based on motion blur image analysis. Background technique [0002] With the rapid development of the national economy, the number of vehicles on the road has increased rapidly, and the traffic pressure has doubled. How to realize the safe and efficient passage of road traffic has become an urgent problem to be solved. Faced with this situation, Intelligent Transportation System (ITS) came into being. Realizing the real-time collection and identification of traffic information is a key step in the construction of intelligent transportation system. Traffic information is an important basic information for urban traffic planning and traffic management. By obtaining comprehensive, rich and real-time traffic information, we can not only grasp the current development status of urban roads, but also predict t...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problems of high cost, inability to obtain instantaneous speed, and relatively large positioning technology error in existing vehicle speed detection, the present invention provides a detection method for vehicle speed and position based on motion blur image analysis. Expensive detection equipment only needs to lay signs on the road surface for detection by the imaging unit installed on the vehicle. When obtaining position and speed information, it can effectively reduce detection costs and operational complexity. It is a convenient and direct measurement method

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