TIN - PIX4Dsurvey


Pix4Dsurvey distant outlier filter icon

Outlier Filter

Pix4Dsurvey terrain filter feature icon

Terrain filter

Pix4Dsurvey grid of points feature icon

Grid of points

Pix4Dsurvey TIN feature icon



Contour lines

The TIN (Triangular Irregular Network) is a seamless set of triangles that represent a surface. In PIX4Dsurvey, the usage of the TIN is primarily intended to model the ground, from points and breaklines.

  • Click Process Pix4Dsurvey process icon or,
  • on the Menu bar, click Process > TIN or,
  • on the Content panel, click TIN > Pix4Dsurvey_processes_button.png.

Input grid of points

The main input for the TIN generation are points generated with the Grid of Points process. For more information and settings, please see the Grid of points article.

To select the Input grid of points:

  • In Processes - TIN, select the generated grid of points in the drop-down menu.


Use terrain layers as breaklines

  • Use terrain layers as breaklines (Enabled - default): This feature allows the use of polyline, polygon, and marker object types as breaklines if the vector layer is defined as a terrain layer. All layers with the tag Terrain are used.  

To define a layer as a Terrain layer:

  • In the Content - Layers, right-click on the layer. 
  • Click Mark as Terrain layer.


To use breaklines as a constraint for the TIN generation, use the Mark as terrain layer option and enable the Use terrain layers as breaklines option.


Example: The vectorize curb in the parking lot can be used as a breakline for the TIN generation:


Dense point cloud with the bottom of the curb vectorized (green line).


TIN generated only from the grid of point. The curb is not used as a breakline. 


TIN generated from the grid of points and the curb as a breakline.


The generated TIN can be exported in LandXML format in the:

  • File - Export To - LandXML [1] or
  • Content - TIN panel by clicking Export... [2].


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Article feedback (for troubleshooting, post here)


  • Carlos Dowell

    Is the TIN surface process included in the Trial version?

  • Avatar
    Blaž (Pix4D)

    Hi Carlos, 

    Using a trial license will give you access to all functionalities of Pix4Dsurvey. To start a Pix4Dsurvey trial, click Start trial on the home screen and you are ready to go. 


  • Keith Pellerin

    I don't see any of the TIN functionality described on this page in the program.  It does not appear to be available in the Trial Version.

  • Avatar
    Blaž (Pix4D)

    Hi Keith, 

    The TIN is also available when using the trial version of Pix4Dsurvey. Could you confirm that you use the latest version available here?


    Edited by Blaž (Pix4D)
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