3D Reconstruction of High Voltage Power Cable Tunnel Based on Basic Component Fitting from Point Clouds

3D visualization technology can visually and clearly display the spatial layout of underground high-voltage cables, but how to finely model the high-voltage cable tunnel in 3D is a challenge. Most existing methods focus on model accuracy and abstraction from the geometric dimension, and cannot utilize the geometric structure and topological feature information of the model itself. The paper proposes a point clouds 3D reconstruction method for high-voltage cable tunnel based on basic component fitting, targeting the geometric characteristics of high-voltage cable tunnel. Firstly, identify the corresponding basic components of the point clouds through point clouds segmentation and cable channel topology comparison. Then, a geometric semantic integrated expression driven by both data information and geometric information is adopted to reconstruct the underground cable channel. This method can effectively reduce the sensitivity to point clouds noise and missing points, solve the problem of point clouds data missing and more noise caused by the narrow space of high-voltage cable tunnel, and thus ensure the accuracy of 3D reconstruction.