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A method for detecting vehicle queuing length at intersections based on aerial video

A technology of queuing length and detection method, which is applied in the traffic control system, traffic control system, image data processing and other directions of road vehicles, and can solve the problems of vehicle detection interference and shooting angle inclination.

Active Publication Date: 2017-11-21
BEIHANG UNIV
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The detection of the existing vehicle queuing length is based on the surveillance video of the intersection. However, the shooting angle of the surveillance video is tilted, the vehicles gradually become smaller from near to far, and the mutual occlusion between vehicles interferes with the detection of vehicles.

Method used

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  • A method for detecting vehicle queuing length at intersections based on aerial video
  • A method for detecting vehicle queuing length at intersections based on aerial video
  • A method for detecting vehicle queuing length at intersections based on aerial video

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Embodiment Construction

[0057] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0058] The present invention is a

[0059] figure 1 A flow chart of a method for detecting vehicle queuing length at an intersection based on aerial video is provided for the present invention, with the purpose of determining the maximum static queuing length of the entrance lane under the red light state. In the embodiment of the present invention, an aerial video of an intersection with a shooting height of 150 m is selected. Specific methods include the following:

[0060] Step 1: Register the aerial video of the intersection

[0061] 1a) In the first frame of the video I 1 Detect KLT (Kanade-Lucas-Tomasi) feature points and manually select three fixed KLT feature points As a registration point;

[0062] 1b) Use the KLT tracking algorithm to track the selected registration points to obtain the i-th frame image I i Corresponding point coordinates in

[0063] 1c)...

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Abstract

The invention discloses a method for detecting the queuing length of vehicles at an intersection based on aerial video, including step 1: registering the aerial video; Light status; Step 4: When the lane is in a red light state, use the three-frame difference method to detect moving vehicles in the preset vehicle queuing length detection area; Step 5: Determine the vehicle queuing area; Step 6: Detect the vehicle queuing area For the number of stationary vehicles, use the actual distance Scale represented by the calibrated picture unit pixel to calculate the actual vehicle queuing distance; Step 7: Repeat the above steps to achieve continuous vehicle queuing length detection. The invention proposes to use aerial video to detect vehicle queuing length, which overcomes mutual occlusion and scale changes among vehicles in the monitoring video, intuitively presents vehicle queuing at intersections, and greatly improves detection accuracy.

Description

Technical field [0001] The invention relates to an intersection vehicle queue length detection method based on aerial video, and belongs to the technical field of computer vision and digital image processing. Background technique [0002] With the rapid development of the national economy, the rapid increase of urban population and the progress of urbanization, the number of motor vehicles has increased year by year, the demand for road traffic has increased sharply, and the problem of urban traffic congestion has become increasingly serious. Level intersections are the bottleneck of traffic capacity in the entire urban road network, and most of the daily traffic jams are caused by poor traffic at intersections. The typical phenomenon of intersection congestion is that the length of the line of vehicles on the entrance road is too long. In severe cases, the queue may spread to upstream intersections, causing congestion at the upstream intersection, which will affect the congesti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/00G08G1/065G06T7/13G06T7/33
Inventor 王云鹏吴新开马亚龙余贵珍李欣旭
Owner BEIHANG UNIV
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