Intersection vehicle queuing length detection method based on aerial video

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

Active Publication Date: 2016-02-10
BEIHANG UNIV
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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

Method used

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  • Intersection vehicle queuing length detection method based on aerial video
  • Intersection vehicle queuing length detection method based on aerial video
  • Intersection vehicle queuing length detection method based on aerial video

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Embodiment Construction

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

[0058] The present invention is a

[0059] figure 1 The flow chart of the vehicle queuing length detection method at an intersection based on aerial video provided by the present invention is to determine the maximum static queuing length of the entrance lane under the red light state. In the embodiment of the present invention, a section of aerial video of an intersection whose shooting height is 150m 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 image I 1 In, detect KLT (Kanade-Lucas-Tomasi) feature points, manually select three fixed KLT feature points as a registration point;

[0062] 1b) Use the KLT tracking algorithm to track the selected registration points, and obtain the i-th frame image I i The corresponding point coordi...

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Abstract

The invention discloses an intersection vehicle queuing length detection method based on an aerial video. The intersection vehicle queuing length detection method comprises the following steps: step 1, registering the aerial video; step 2, setting a vehicle queuing length detection region at an intersection entrance path; step 3, detecting a red light state; step 4, when a lane is at the red light state, detecting moving vehicles in the pre-set vehicle queuing length detection region by using a three-frame difference method; step 5, determining a vehicle queuing region; step 6, detecting the quantity of static vehicles of the vehicle queuing region and calculating an actual vehicle queuing length by using an actual distance Scale represented by a calibrated image unit pixel; and step 7, repeating the steps to realize continuous vehicle queuing length detection. According to the intersection vehicle queuing length detection method, the vehicle queuing length detection is carried out by the aerial video and mutual shielding and size changes of the vehicles in the monitored video are overcome, so that an intersection vehicle queuing condition is directly represented and the detection precision is extremely improved.

Description

technical field [0001] The invention relates to a method for detecting the queuing length of vehicles at an intersection 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 advancement 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 congestion is caused by poor intersection traffic. A typical phenomenon of intersection congestion is the long queue of vehicles at the entrance. In severe cases, the queue may spread to the upstream intersection, which will lead to congestion at the upstream intersection, thereby affecting th...

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Application Information

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IPC IPC(8): G08G1/00G08G1/065G06T7/00
Inventor 王云鹏吴新开马亚龙余贵珍李欣旭
Owner BEIHANG UNIV
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