Track section state detection method and system

The invention provides a track section state detection method, and relates to the technical field of track section state detection.The method comprises the steps that a three-dimensional image of a track surface is obtained in real time, and the three-dimensional image is processed to obtain preprocessed data; analyzing pixel points of each frame of the three-dimensional image in the preprocessed data to obtain pixel point brightness levels; according to the brightness level of the pixel point, obtaining a dust gray scale feature; according to the dust gray scale features, real cracks of the rail surface of the rail are identified; obtaining the size and the number of real cracks; and according to the size of the real crack and the number of the real crack, carrying out risk assessment on the rail surface to obtain a risk assessment result of the rail surface state of the rail. According to the method, the rail surface risk state of the rail can be detected more accurately. 本发明提供了一种轨道区段状态检测方法，涉及轨道区段状态检测技术领域，所