Mesh

The following processing options can be adjusted when enabling the mesh generation:

• Input (Optional)
• Template
• Texture size
• Deghosting
• Decimation
• Sky mask

 

Information: The Mesh can be visualized directly in PIX4Dmatic, in the 3D view. To access the 3D view:

• In the menu bar, click View > Switch to 3D, or
• Click the 3D button on the screen , or
• Use shortcut 3.

It can also be uploaded to PIX4Dcloud, for visualization. For more: How to upload or replace results to PIX4Dcloud.

Mesh 3D visualization in PIX4Dmatic.

Input (Optional)

It allows selecting the input point cloud for the Mesh generation. The following options are available:

• Dense point cloud (default): The point cloud generated from images during the Densify step.
• Depth point cloud: The point cloud generated from LiDAR depth maps.
• Depth & dense fusion: The point cloud that present a fusion of the dense and depth point cloud. 

Selecting input point cloud for the Mesh generation.

Template

This option enables distinguished default parameters for the mesh generation algorithms used for the different types of datasets imported into the software. The following templates are available for the Mesh generation:

• Aerial (default): Ideal for scenes with larger extent. Typically drone flight size projects that contain oblique or nadir data.
• PIX4Dcatch: For projects with limited extent. Optimized for hand-held captured data with PIX4DCatch.
• Thin structures: For projects that capture thin structures, i.e., cables, powerline tower structures, antennas.

Selecting Template for the Mesh generation.

Texture size

Texture Size (1024x1024 - 32768x32768 pixels, default 8192x8192 pixels): Parameter used to define the resolution of the texture of the Mesh.

Deghosting

This option enables different parameters for the mesh generation algorithms used for the different types of datasets to improve the mesh results. It can remove objects and can be beneficial in case of highly complex geometries. The following deghosting options are available for the Mesh generation:

• Weak (default): Ideal for soft outlier detection. Recommended in general cases. It may cause artifacts though, with moving occluders or thin structures such as cables, powerline tower structures, and antennas.
• Strong: Aggressive outlier detection. May give better results when the geometry is highly complex (e.g. telecom towers) or when a lot of objects are moving in the scene (e.g. pedestrian street). The downside of the strong setting is that it could cause desaturation of color and loss of sharpness.

Comparison between Strong (left) and Weak (right) deghosting settings for the Mesh generation.

Decimation

Decimation (1.000.000 default): The maximum number of triangles in the final Mesh. The number will depend on the geometry and the size of the project.

Sky mask

Sky mask utilizes the generated mask during the Densify step to improve the mesh quality. It is enabled by default when the Sky filter option is enabled while running the Densify step.

Enabling the Mesh Sky mask option after selecting the Sky filter process of the desification.