Abstract: Power line and tower detecting and modeling, as an important problem in the electric power transmission, is getting more and more concerns in recent years. The traditional photogrammetric function is costly and time consuming. LiDAR (Light Detection And Ranging) system provides a new way of data collection and achieved great development in the recent decade, which made it possible of modeling power tower efficiently, nevertheless till now the tower modeling problem is still lack of feasible solution. The author proposed a workflow of modeling the power tower, by utilizing the connection node of line pairs to detect the tower points, while building a 3-D grid to reconstruct the 3-D power tower with the line tracing function on binary grid data. Experiment results vindicate its rationality and validity. The modeling method could be applied to power equipment management, monitoring, and visualization system. 

Key words:  power tower, LiDAR data, 3D grid