Fine-Grained Point Cloud Semantic Segmentation of Complex Railway Bridge Scenes from UAVs Using Improved DGCNN

Figure 8

Area division of the three scenes. (a) Dividing four areas by the track length in scene (a); (b) dividing five areas by different track foundation support structures in scene (b); (c) dividing six areas by three distinct tracks and various track foundation support structures in scene (c).

(a)

(b)

(c)