公开(公告)号：WO2016185373A1

公开(公告)日：2016-11-24

申请号：PCT/IB2016/052849

申请日：2016-05-17

Applicant: ROADMETRIC LTD.

Inventor： ALON, Yaniv

IPC: G08G1/01 ,  G08G1/04

CPC classification number: G08G1/04 ,  B60Y2400/3015 ,  G06K9/00785 ,  G06K9/00791 ,  G06T7/20 ,  G06T7/251 ,  G06T7/292 ,  G06T7/70 ,  G06T2207/10016 ,  G06T2207/30236 ,  G06T2207/30252 ,  G08G1/0175 ,  H04N5/247

Abstract: Determining that a trailing vehicle is tailgating a lead vehicle while both are traveling on a lane of a road. A camera captures a timed sequence of image frames at known capture times of the lead vehicle and the trailing vehicle. Images of the trailing vehicle and the lead vehicle are selected from the captured image frames to provide respective image coordinates of the trailing vehicle and the lead vehicle. Multiple world space differential distances between the trailing vehicle and the lead vehicle are computed responsive to the image coordinates in the selected image frames. A tailgating metric responsive to the known capture times of the selected image frames and the computed world space differential distances is determined.

Abstract translation: 确定尾随车辆正在拖车，同时两者都在道路的车道上行驶。 照相机在先导车辆和尾随车辆的已知捕获时间捕获图像帧的定时序列。 从捕获的图像帧中选择尾随车辆和引导车辆的图像，以提供后方车辆和前置车辆的各自的图像坐标。 响应于所选择的图像帧中的图像坐标来计算拖尾车辆和引导车辆之间的多个世界空间差距离。 确定响应于所选择的图像帧的已知捕获时间和所计算的世界空间差距的尾随度量。

公开(公告)号：WO2020039438A1

公开(公告)日：2020-02-27

申请号：PCT/IL2019/050937

申请日：2019-08-21

Applicant: ROADMETRIC LTD.

Inventor： DEVOR, Jonathan ,  MUCHNIK, Igal ,  SILVERA, Elrom ,  BENSIMHOUN, Michael

IPC: G08G1/052 ,  G08G1/054

Abstract: Determining that a vehicle is speeding in violation of a speeding regulation. Capture a timed sequence of image frames of the target vehicle at known capture times of the vehicle, identify corresponding images of a license plate of the target vehicle in the image frames, recognize an alphanumeric character of the license plate in the corresponding images of the license plate, measure respective image dimensions of the alphanumeric character; and responsive to a change between the image dimensions of the alphanumeric character, compute a speed of the target vehicle relative to the camera. Font style and font size are stored of one or more standard vehicle license plate.