Post-processing method for hidden danger identification of power transmission line channel

The invention relates to a power transmission line channel hidden danger identification post-processing method. The method comprises the steps of obtaining a power transmission line channel picture; cutting the power transmission line channel picture from top to bottom according to preset tile height and width, and filtering out invalid tiles; inputting the tiles into the semantic segmentation model to obtain a mask graph; background information in the mask image is removed, a binary image is created for each type of hidden danger in the mask image, and outlines of objects in the binary images are extracted; contour fitting is carried out on the contour of the surface object, and local coordinates of the contour are converted into global pixel coordinates; combining similar surface objects; calculating barycentric coordinates of the point object, and converting the barycentric coordinates into global pixel coordinates; performing density clustering on the point objects; and generating a polydon object from th