3D Mesh [Ground]
From the outputs bar, you can create a textured 3D mesh based on Dense Cloud.
Click on Elaborate 3D Mesh
Define the 3D Mesh settings.

Quality 3D mesh: the quality of the final 3D mesh.
Max number of triangles: the maximum number of triangles in the mesh.
Texture resolution: the quality level of the mesh texture.
Click OK for the final output.
