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

A technology of queuing length and intersection, which is applied in the field of intelligent transportation to achieve real-time performance and reduce the amount of computation

Inactive Publication Date: 2009-07-01
HOHAI UNIV CHANGZHOU +1
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  • Application Information

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Problems solved by technology

This method can detect the queuing length of vehicles only by using a single frame image at the intersection, which...

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

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Embodiment Construction

[0018] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0019] see figure 1 A detection device for vehicle queuing length at an urban intersection includes a light intensity detection control circuit 1 , an image acquisition and processing device 2 and a queuing length output interface 3 . The light intensity detection control circuit 1 is connected to the image acquisition and processing device 2 , and the image acquisition and processing device 2 is connected to the queue length output interface 3 . The light intensity detection control circuit 1 includes an environment light intensity detection circuit 1-1, a flashligh...

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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 ...

Claims

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Application Information

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IPC IPC(8): G01C11/00G01B21/06G08G1/01G06K9/00
Inventor 李庆武刘国高周建东石丹
Owner HOHAI UNIV CHANGZHOU
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