公开(公告)号：WO2017059527A1

公开(公告)日：2017-04-13

申请号：PCT/CA2016/050962

申请日：2016-08-17

Applicant: GENETEC INC.

Inventor： BLAIS-MORIN, Louis-Antoine

IPC: G01P3/38 ,  G01P3/36 ,  G08G1/054

CPC classification number: H04N5/23229 ,  F16M11/06 ,  F16M11/28 ,  G06T7/246 ,  G06T7/80 ,  G06T2207/10016 ,  G06T2207/30236 ,  G08G1/052 ,  H04N5/232

Abstract: Provided is a visual vehicle speed estimation system based on camera output and calibration for such a vehicle speed estimation system. The calibration allows use of the system where the absolute camera position is unknown. Calibration determines an absolute-position-independent relationship between an image space placement and a physical space position relative to the camera. The calibration is done on the basis of camera output using vehicle features of known dimensions and some assumed physical constraints related thereto to provide a conversion relationship between image coordinates and physical space coordinates in a physical space defined in relation to the camera. This relationship is then used to estimate vehicle speeds based only on the visual information provided by the camera. Abstract is not to be interpreted as limiting.

Abstract translation: 提供了一种基于这种车速估计系统的相机输出和校准的视觉车速估计系统。 校准允许使用绝对摄像机位置未知的系统。 校准确定图像空间位置与相对于相机的物理空间位置之间的绝对位置无关的关系。 使用已知尺寸的车辆特征和与其相关的一些假定的物理约束，基于相机输出来进行校准，以提供在相机定义的物理空间中的图像坐标和物理空间坐标之间的转换关系。 然后，该关系仅用于基于由相机提供的视觉信息来估计车辆速度。 摘要不被解释为限制。