The invention belongs to the technical field of rail traffic disease detection, and provides a texture image-based turnout switch rail close contact detection method, which comprises the following steps of: acquiring an imaging area texture image, and detecting a steel rail and a switch rail from the image; after the point rail is detected, in the texture image, by taking the steel rail as an axis, arranging m1 sampling windows perpendicular to the extending direction of the steel rail, projecting pixels in the sampling windows along the extending direction of the steel rail, on a projection curve, by taking the inner side edge of the steel rail as a center, sampling the projection curve in the range of [-u, u], and on the basis of the sampling curve, determining the point rail; a classifier is adopted to judge whether the switch rail is insufficient in close fit or not; and if the switch rail close contact is insufficient, measuring the width of a wave trough in the sampling curve as a switch rail close contact gap measurement value, and taking the mean value or the maximum value of m1 switch rail close contact gap measurement values as the final switch rail close contact gap. According to the invention, insufficient contact detection and gap quantitative measurement of the switch rail can be automatically realized.

    本发明属于轨道交通病害检测技术领域,提供了一种基于纹理图像的道岔尖轨密贴检测方法,包含:采集成像区域纹理图像,并从该图像中检测出钢轨和尖轨;检测出尖轨后,在纹理图像中,以钢轨为轴、垂直于钢轨延伸方向设置m1个采样窗口,沿钢轨延伸方向对采样窗口内像素进行投影,在投影曲线上,以钢轨内侧边缘为中心,对[‑u,u]范围内投影曲线进行取样,基于取样曲线,采用分类器判定是否存在尖轨密贴不足;若存在尖轨密贴不足,测量所述取样曲线中波谷的宽度,作为尖轨密贴间隙测量值,取m1个尖轨密贴间隙测量值的均值或最大值作为最终的尖轨密贴间隙。本发明可自动实现尖轨密贴不足检测和间隙定量测量。


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    Title :

    Turnout switch rail close contact detection method based on texture image


    Additional title:

    一种基于纹理图像的道岔尖轨密贴检测方法


    Contributors:
    GUAN XINQUAN (author) / DUAN QINAN (author) / PEI YUHU (author) / WANG SHIYU (author) / LI YUNHAO (author) / DU GENLIN (author) / LI YUQING (author) / LAN WEI (author) / HU CHENGKAI (author)

    Publication date :

    2023-10-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B61K Andere Hilfseinrichtungen für Eisenbahnen , OTHER AUXILIARY EQUIPMENT FOR RAILWAYS / G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS , Messen der Länge, der Dicke oder ähnlicher linearer Abmessungen



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