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3D Triangulation of Point Clouds

Use this dialog to 3D triangulate point clouds in application layers.

It is important to preprocess the point clouds before 3D triangulation. Noise and other unwanted objects should be removed in advance. Gemini Terrain offers both manual methods for editing point clouds and an automatic method for removing noise.

Where can I find the dialog?

In the context menu of the terrain model drawing, when a point cloud is selected, choose 3D Triangulation of Point Clouds...

Using the dialog

Triangulation is usually performed in two or more iterations, but you can run only one iteration if you want a quick and rough triangulation.

Procedure

  1. Select the point cloud in the map and choose 3D Triangulation of Point Clouds... from the context menu.
  2. Select Cell Size for the first iteration.
  3. Check Include points likely to be on an edge if the dataset suggests this, for example, if it contains many sharp bends (structures).
  4. Check Triangulation 2nd iteration unless you only want a quick, rough triangulation.
  5. Set the desired accuracy for the triangle net. Optionally, check to run extra iterations if the situation suggests it, for example, if the point cloud contains little noise.
  6. Check Fill holes if the dataset suggests this. For example, the dataset may contain open areas as a result of previous processing (removal of buildings, vegetation, etc.).
  7. Select the application layer where the result should be stored. You can also check to copy properties from the point cloud to the triangle net.
  8. Click OK to perform the triangulation.

You can read more about triangulation in the user documentation under Triangulate Data.