Output is not displayed / feature is missing on Pix4Dcloud

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The following cases can happen after processing on Pix4Dcloud.

  • 2D view: The orthomosaic, digital surface model (DSM), or index is not displayed.
  • 3D view: The Point Cloud or textured mesh is not displayed.
  • The elevation profile does not load.

If the project is uploaded from Pix4D Desktop

A typical cause is related to settings that were selected in Pix4D Desktop beforehand. Pix4Dcloud servers process images based on the project file (.p4d) that is uploaded. Therefore, it can happen that the outputs were not generated nor exported.

It is then required to:

1. Re-open the project with Pix4D Desktop.
2. Change the processing options accordingly as detailed below.
3. Re-upload to Pix4Dcloud for re-processing.

ISSUE
 WHAT TO CHECK / HOW TO SOLVE
2D view
GeoTIFF Raster DSM and/or GeoTIFF Orthomosaic outputs are not displayed. 1. On the menu bar, click Process > Processing Options...
2. Select the processing step 3. DSM, Orthomosaic and Index.
3. Mark the checkbox corresponding to Step 3. DSM, Orthomosaic and Index.
4. Select the tab DSM and Orthomosaic.
5. Check the GeoTIFF box for the desired output. The Merge Tiles box does not matter.
For more information: Menu Process > Processing Options... > 3. DSM, Orthomosaic and Index > DSM and Orthomosaic.
GeoTIFF Reflectance and/or NDVI outputs are not displayed. 1. On the menu bar, click Process > Processing Options...
2. Select the processing step 3. DSM, Orthomosaic and Index.
3. Mark the checkbox corresponding to Step 3. DSM, Orthomosaic and Index.
4. Select the tab Index Calculator.
5. Under Reflectance Map, check the GeoTIFF box to generate the Reflectance Maps. The Merge Tiles box does not matter.
6. Check the box of the NDVI formula to generate the NDVI Index Map.
For more information: Menu Process > Processing Options... > 3. DSM, Orthomosaic and Index > Index Calculator.
3D view
LAS Point Cloud output is not displayed. 1. On the menu bar, click Process > Processing Options...
2. Select the processing step 2. Point Cloud and Mesh.
3. Mark the checkbox corresponding to Step 2. Point Cloud and Mesh.
4. Select the tab Point Cloud.
5. Check the LAS box.
For more information: Menu Process > Processing Options... > 2. Point Cloud and Mesh > Point Cloud.
OBJ 3D Textured Mesh output is not displayed. 1. On the menu bar, click Process > Processing Options...
2. Select the processing step 2. Point Cloud and Mesh.
3. Mark the checkbox corresponding to Step 2. Point Cloud and Mesh.
4. Select the tab 3D Textured Mesh.
5. Check the box Generate 3D Textured Mesh.
6. Check the OBJ box.
For more information: Menu Process > Processing Options... > 2. Point Cloud and Mesh > 3D Textured Mesh.

General causes

Additional causes can prevent the outputs from being loaded and affect the display.

ISSUE
 EXPLANATION
2D and 3D views

Point Cloud and 3D Textured Mesh are uploaded as results but nothing is displayed in the 3D view.

The issue is due to the merged viewer/editor that displays the non-georeferenced 3D Mesh and the georeferenced Point Cloud together. The mesh (.obj, .jpg and .mtl) uploaded as a result to the Cloud is indeed not georeferenced. However, there is an option for georeferencing the uploaded mesh:

1. In the project, go to Files > RESULTS.
2. In the Mesh OBJ section, click Replace Files.
3. Browse the project_name_offset.xyz file that can be found in the ..\1_initial\params folder. Select the file and click Open.
4. Drag and drop the files of the mesh (.obj, .jpg and .mtl) into the uploader.

Alternatively, copy the project_name_offset.xyz file into the folder ..\2_densification\3d_mesh, then drag and drop the four .obj, .jpg, .mtl and .xyz files into the Mesh OBJ section.

Outputs have a significant size and/or a complex geometry.

The Cloud viewer can be limited by browser resources (display, memory) because of the input images (number, resolution, content) and project properties (geolocation information, extracted keypoints, resolution settings). For more information: Processing speed.

The web browser application does not support 3D visualization.

It is necessary that the web application supports optimized WebGL for rendering 3D graphics. This is a known issue for some iOS devices. For more information: ArcGIS help, Sketchfab help.

Pix4Dcloud cannot be accessed or some tools are not available in a Cloud project

In some cases, an internet browser combined with a specific operating system does not support some or all the functionalities on Pix4Dcloud.

  • The configuration Internet Explorer 11/Windows 10 gives limited access to Pix4Dcloud. Some tools will not be available, as the elevation profile generation.
  • The configuration Internet Explorer 11/Windows 7 is officially not supported.
    For more information about the supported Internet browsers and operating systems for Pix4Dcloud: Pix4Dcloud - FAQ.

Project fails to be processed on the servers.

Several leads are recommended to be explored in order to troubleshoot the problem. For more information: Error while processing a project on Pix4Dcloud.

OBJ 3D Textured Mesh exceeds 1 GB.

Pix4Dcloud supports visualizing OBJ 3D Textured Meshes that are smaller than 1 GB. Please ensure that your OBJ 3D Textured Mesh is smaller than 1 GB before uploading it to Pix4Dcloud.

JPG Texture file exceeds 16384 x 16384 pixels.

Pix4Dcloud supports 3D Textured Meshes having a JPG texture image that is smaller than 16384 x 16384 pixels. Please ensure that your JPG Texture file is smaller than this size before uploading it to Pix4Dcloud.

The elevation profile is missing

One of these might be the reason:

  • The project results can be shared using the Share button in the upper-right corner. All the content of the 2D or 3D view together with the annotations are shared except the elevation profile, which has to be re-triggered every time.
  • If the 3D Mesh is uploaded as a result, it is not georeferenced. The elevation profile generated on this output, will not be available.
  • Once the project has been uploaded for processing or the results uploaded to the Cloud and one output is replaced with a new one with a different coordinate system than the project's one, the elevation profile is not available if generated on that replaced output.

Error calculating the volume

The occurrence of one of the following conditions prevents the volumes from being calculated:

  • No DSM is available
  • The 3D mesh is uploaded from the Cloud interface and the volume is calculated on the 3D mesh (the base surfaces that are being drawn on the mesh do not intersect any valid region of the DSM)
  • The coordinate system used is not one of those recognized as valid
  • The coordinate system is arbitrary

Images are captured with a multi-spectral camera.

One GeoTIFF file is generated per band instead of the single true color orthomosaic. The Cloud platform only displays the DSM and NDVI outputs. However, all GeoTIFF files are downloadable. For more information: How to download results from the cloud.

 

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