Clean-up Tunnel

1. Set the level of details.

2. Choose which Point clouds will be created.

3. Choose to create a Tunnel mesh from point cloud On the Tunnel.

4. Display the results with Preview and show/hide the point clouds or the mesh with the lightbulb icons.

5. Validate the command with OK or close the dialog box with Cancel.

Level of details

The main option is Extraction Step. You must understand it as a sampling rate. Therefore, if you decrease the value, the extraction accuracy should increase. However, the calculation time will increase at the same time.

The choice of the Extraction step parameter depends on the shape of your tunnel. Thus, you must try several values or the second option. The additional option Try to keep details is useful when you want to keep details on the walls or with irregular cross sections along neutral axis. However, this algorithm can be time-consuming.

Point clouds

If you check On the tunnel, the useful points to make a tunnel mesh will be computed and displayed in blue.

If you check NOT on the tunnel, the useless points to make a tunnel mesh will be computed and displayed in red.

If you only want the tunnel mesh, you will be able to show the Initial cloud by clicking on the bulb.

Created Mesh

The result of this command is a mesh of the tunnel. This mesh can be either a mesh which vertices are located on points from the initial point cloud (Measured points option), a Regular mesh or a Refined mesh.

• The Measured points option is the fastest extraction.

• The Regular option re-samples the mesh to better fit the point cloud.

• The Refined option is mostly interesting in case of sharp edges like curbs and platforms.