Image analysis system, method and device suitable for track detection

Abstract

The invention relates to an image analysis method suitable for track detection. The method comprises the following steps: an image extraction step; in the image positioning step, a linear track section is selected from the selected image, then a track coordinate system and a vehicle coordinate system are arranged in the image comprising the linear track section, and the track coordinate system is parallel to the vehicle coordinate system; a geometric judgment step: in the orbit coordinate system, selecting any point M on the path of the orbit, calculating the apparent curvature, selecting a point N, and calculating the curvature at the current moment by the point M and the point N; and an orbit analysis step: judging the state of the orbit according to the difference value between the apparent curvature and the curvature at the current moment. 本发明涉及一种适用于轨道检测的影像分析方法，包括：图像提取步骤；影像定位步骤，在所选择的图像中选择一个直线轨道段，然后在包括直线轨道段的图像中设置轨道坐标系和车辆坐标系，轨道坐标系和车辆坐标系平行；几何判定步骤，在轨道坐标系中，在轨道的路线上选择任意一点M，计算视曲率，并且选择一点N，由M点和N点计算当前时刻的曲率；以及轨道分析步骤，根据视曲率和当前时刻的曲率的差值来判断轨道的状态。