How to improve the 3D Textured Mesh - PIX4Dmapper


If the project is not complete or the quality of the images is not high, the 3D Textured Mesh generated in PIX4Dmapper may have holes or may not be planar in planar surfaces. It is possible to improve the 3D Textured Mesh by adding surfaces (planar constraint) on a group of points in the point cloud.
This feature can be used on buildings and constructions where natural planes can be found.

Adding a planar constraint can improve and solve issues in the mesh such as:


Improve the planarity of plane surfaces

Original 3D Textured Mesh Surfaces with planar constraints  3D Textured Mesh after planar constraints
Figure 1. Improve the planarity of the planes 

Fill in holes

Original 3D Textured Mesh 3D Textured Mesh after planar constraint on the door 
Figure 2. Fill in holes 


To improve the 3D Textured Mesh:

1. Draw a New Surface on the planar surfaces of the object using the rayCloudHow to draw a Surface in the rayCloud.
2. In the right sidebar, in the Selection section, select the checkbox Use for DSM and Triangle Mesh. For more information: Menu View > rayCloud > Right sidebar > Objects.
3. Choose the Orientation method by selecting the checkbox Automatic Orientation.

Important: If the Automatic Orientation option does not provide satisfactory results, deselect Automatic Orientation to use the sequence in which the vertices are included while drawing the surface. The surface must be drawn counterclockwise, as shown below: 

4. Click Apply
5. (optional) Add more planar constraints following steps 1 to 4. 
6. On the Menu bar, click Process > Generate 3D Textured Mesh: Menu Process > Generate 3D Textured Mesh.

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