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Method for detecting traffic conflicts at plane intersection based on video fusion

A technology of traffic conflict and video fusion, applied in traffic flow detection, closed-circuit television system, etc., to achieve strong persuasiveness, intuitive effect, and avoid large errors

Inactive Publication Date: 2011-08-17
BEIHANG UNIV
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

These patents only use road video to detect vehicle speed and position, and do not involve the method of fusing video at intersections to detect traffic conflicts

Method used

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  • Method for detecting traffic conflicts at plane intersection based on video fusion
  • Method for detecting traffic conflicts at plane intersection based on video fusion
  • Method for detecting traffic conflicts at plane intersection based on video fusion

Examples

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Embodiment Construction

[0023] (1) Select 2 cameras in the 4 corners of the intersection ( figure 1 ). Place the cameras on a tripod and raise them as high as possible; adjust the angles of each camera so that the images captured by any two cameras partially overlap, and the images captured by all cameras can cover the entire intersection. For convenience, the x-axis and y-axis of the on-site measurement coordinate system are positioned in two perpendicular directions of the intersection ( figure 2 ).

[0024] (2) The videos captured by each camera are fused, the fused panorama is analyzed, and moving objects are detected through video detection.

[0025] (3) Using the method of video detection, determine the position, speed, direction angle and type of moving objects; record the number of moving objects entering the intersection in real time, and complete the statistics of traffic volume; at the same time, combine the types of moving objects with the following conversion values Table 1, calculat...

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Abstract

The invention discloses a method for detecting traffic conflicts at a plane intersection based on video fusion. The method disclosed by the invention is remarkably characterized by comprising the following steps of: shooting an intersection (shown in Figure 1) by using a plurality of cameras, and fusing the videos of the plurality of the cameras to montage into a panoramic video of the intersection; and acquiring motion parameters of each moving object by processing the panoramic video, calculating conflict parameters and severities of the occurred traffic conflicts among traffic participating units, counting serious conflict statistics and traffic volumes at the intersection, and constructing a method for evaluating a security status at the intersection based on the video fusion so as to realize the evaluating and monitoring of the security status of the intersection. The method for detecting the traffic conflicts at the plane intersection based on the video fusion has the characteristics of low cost, accuracy and rapidness, brings convenience to the research of traffic conflicts at the intersection, and is beneficial to implementation of the effective improvement to the traffic control at the intersection so as to ensure traffic safety.

Description

technical field [0001] The invention relates to a method for detecting traffic conflict at level intersections based on video fusion. The traffic conditions at the intersection are photographed and stored in real time by multiple cameras distributed at the level intersection, and the captured videos are fused to obtain a panorama of the traffic condition at the intersection. The motion parameters of moving objects are extracted in the panorama, so as to calculate the number of traffic conflicts and the severity of traffic conflicts, and realize the safety evaluation of intersections. Background technique [0002] Traffic conflict technology has been widely used in many countries in the world, and has become an important method for quantitative research on various traffic safety (especially location safety) problems and countermeasures in the world. [0003] The main research results and conclusions abroad are: [0004] In 1976, CharlesV.Zegeer et al. applied traffic confli...

Claims

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Application Information

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IPC IPC(8): G08G1/01H04N7/18
Inventor 鲁光泉王云鹏刘淼淼余贵珍田大新张喆
Owner BEIHANG UNIV
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