The invention discloses a multi-lane vehicle speed detection method and system, and belongs to the technical field of vehicle speed calculation, and the method comprises the steps: carrying out the mixed Gaussian modeling of an expressway video, obtaining a vehicle-free expressway background image, then carrying out the detection of lane lines, carrying out the coordinate transformation through the edge coordinates of the lane lines and the distance between the lane lines, and obtaining a vehicle-free expressway background image; and obtaining virtual detection areas of different lane lines with accurate distances, and calculating the speed of the vehicle passing through the detection areas by taking the mass center of the vehicle as a reference from a known vehicle track. Coordinate transformation is carried out on end point coordinates of lane lines, detection area division is carried out on multiple lanes in an expressway, and the average speed of a vehicle passing through the detection area is calculated by using a video frame rate; the technical problem that the speed detection precision is reduced due to the fact that the speed measurement areas of the lanes on the two sides of the highway cannot be set according to the position information of the lane lines in the existing highway scene is solved.
本发明公开了一种多车道车速检测方法及系统,属于车速计算技术领域,对高速公路视频进行混合高斯建模,获得无车辆的高速公路背景图,然后对车道线进行检测,利用车道线的边缘坐标与车道线距离进行坐标变换,获得距离准确的不同车道线的虚拟检测区域,从已知的车辆轨迹中将车辆质心为基准,计算车辆通过检测区域的速度。通过对车道线的端点坐标进行坐标变换,针对高速公路中的多个车道进行检测区域的划分,利用视频帧率计算车辆通过检测区域的平均速度,解决了现有高速公路场景下车道线的位置信息不能对高速公路两侧车道进行测速区域的设定以致车速检测精度降低的技术问题。
Multi-lane vehicle speed detection method and system
一种多车道车速检测方法及系统
2023-07-28
Patent
Elektronische Ressource
Chinesisch
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