Single-frame image detection apparatus for vehicle queue length at road junction and its working method

Abstract

The invention relates to a single frame picture test device for automobile queue length at crossroad and a working method thereof. The single frame picture test device comprises an illumination intensity detection control circuit, an image collection and processing device, and a queue length output interface. The working method comprises: detecting environment illumination intensity, and automatically using a flash lamp to collect a single frame traffic image under low illumination intensity; processing binarization on the traffic image via double threshold value method; detecting lane edges via Hough transformation to define a lane region; detecting boundary to obtain the boundary image of automobiles; projecting the edge information of automobiles to the center line of the lane region; scanning the white points on the center line to determine queue tail; calculating the queue length in the image, calculating actual automobile queue length, and outputting the actual automobile queue length via an output interface. The invention overcomes the defects of video flow detection which is affected by weather, illumination, camera vibration and the like, having the advantages of simple calculation, high operation speed and high reliability.

Description

technical field [0001] The invention relates to the technical field of intelligent transportation, in particular to a device and a working method for detecting the queuing length of vehicles at urban intersections by using a single-frame image. Background technique [0002] With the rapid development of social economy, the number of official cars and private cars has been increasing rapidly in recent years, and the traffic congestion and congestion in major cities across the country are becoming more and more serious. Only relying on road construction, bridge construction and capacity expansion can no longer solve traffic jams, traffic accidents and other problems. Therefore, urban road traffic construction, planning departments and traffic management departments have begun to adopt modern high-tech to combine construction and management. In this background, starting from the concept of system, considering vehicles and roads together, and using various high-tech systems to ...

AI Technical Summary

Problems solved by technology

This method can detect the queuing length of vehicles only by using a single frame image at the intersection, which overcomes the shortcomings of using video stream detection that is easily affected by weather, light, camera shake, etc.

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