TerraScan has a number of tools which are dedicated to powerline processing. These include classification, vectorization, and reporting tools.
Tools for powerline processing are divided into three parts:
•Vectorize Wires toolbox - tools for automatic detection and manual placement of wires, check and correction of wire attachments as well as assigning wire attributes.
•Vectorize Towers toolbox - tools for manual placement of tower models, manipulation of towers, cross arms, and attachments.
•View Powerline toolbox - tools for labeling towers, finding danger objects, and creating reports.
A general strategy for processing powerline data can be outlined as follows. The final workflow depends on the project requirements.
1.Classify the point cloud in a way that points on powerline structures (towers, wires) stand out. This may involve classification of points
•on the ground using the Ground routine
•above the ground using the By distance routine
•relative to the centerline of the powerline using the By centerline routine
•with echo type “first of many” using the By echo routine
3.Detect wires automatically using the Detect Wires tool.
4.Manually place wires using the Place Catenary String tool in places where the automatic detection does not work.
5.Validate and adjust catenary attachment points using the Check Catenary Attachments tool.
6.Assign wire attributes using the Assign Wire Attributes tool.
7.Define tower models in the Powerlines / Tower types category of TerraScan Settings.
8.Manually place towers using the Place Tower tool.
9.Create labels with the help of labeling tools in the View Powerline toolbox.
11.Create output reports with tools in the View Powerline toolbox.