Tunnel surfaces
Not UAV
Tunnel surface routine classifies points collect inside tunnels. The routine classifies points on the tunnel roof, floor and walls. It requires the computation of normal vectors which can be done with the Compute normal vectors command or macro action. The normal vector direction should be turned towards the inside of the tunnel determined by either a trajectory or a vector element.
SETTING |
EFFECT |
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From class |
Source class(es). |
Opens the Select classes dialog which contains the list of active classes in TerraScan. You can select multiple source classes from the list that are then used in the From class field. |
|
Floor to |
Target class for points on the tunnel floor. |
Roof to |
Target class for points on the tunnel roof. |
Wall to |
Target class for points on the tunnel walls. |
Floor normal |
Maximum angle off from vertical of the normal vector for points on the tunnel roof. |
Roof normals |
Maximum angle off from vertical of the normal vector for points on the tunnel floor. |
Min count |
Minimum amount of points per surface patch belonging to one target class. If a patch contains less points, it is added to the larger neighbouring class. |
Smoothen roof/wall transitions |
If on, the transition between roof and wall surface patches is smoothed. |
Inside fence only |
If on, points inside a fence or selected polygon(s) are classified. |