Example Datasets Available for Download: DJI House

DJI House
The goal of this project is to generate the 3D model of a house using a DJI Phantom 2 Vision+ and acquiring the images with Pix4Dmapper Capture App.
3D Textured Mesh 3D Textured Mesh 3D Textured Mesh
General project information
Project
Location Switzerland
Average Ground Sampling Distance (GSD) 1.57 cm / 0.62 in
Area covered 0 km2 / 0.0009 ha / 0 sq.mi. / 0.0023 acres
Output coordinate system WGS84 / UTM zone 32N
Vertical Coordinate System: Geoid Height Above WGS 84 Ellipsoid = 0 meters
Image acquisition
UAV DJI Phantom 2 Vision+
Image acquisition software Pix4Dmapper Capture App
Image acquisition plan flying twice around the house, using 2 different altitudes
Camera Phantom Vision FC200
Images
Number of images 71
Image size 2304x1728 (half resolution of the original images)
Image geolocation coordinate system WGS84
Download* and project files

The dataset can be downloaded here.

The project can be found processed on Pix4D Cloud here

The downloaded folder contains the following files and folders:

  • images: RGB images in JPG format.
  • example_dji_house.p4d: project file that can be opened in Pix4Dmapper.

*The usage of this dataset is meant to be for personal and professional training. If you would like to use it for commercial or promotional objectives, please be sure to mention "Courtesy of Pix4D / pix4d.com" linking all this text to pix4d.com.

Instructions

This section describes how to process the dataset using the included .p4d project file in order to generate a 3D mesh of a house.

1. Open the project example_dji_house.p4d.
2. On the menu bar, click View > Processing. The Processing window opens at the bottom of the main window.
3. On the Processing bar, click Start to start the processing.

 
Note: As the goal of this project is to generate only the 3D model (no DSM and orthomosaic), the template used for the Processing has been set to 3D Models. This can be seen in Process > Processing Options....
Process the dataset creating a new project

This section describes how to create and process a project in order to generate a 3D mesh of a house.

A) Create a new project:

1. Start Pix4Dmapper.
2. On the Menu bar, click Project > New Project....
3. The New Project wizard opens.
4. In Name: Type a name for the project. In this example type example_dji_house.
5. (optional) In Create In:  click Browse..., and in the Select Project Location pop-up, navigate to select the folder where the project and results will be stored and click Select Folder.

 
Note: When the project is created, a folder named after the project name typed in the Name field will be created in the selected folder and will store all the results. The .p4d project file will also be stored in this folder.

6. (optional) Select the check box Use As Default Project Location to save all new projects in the selected folder.
7. In the section Project Type, keep selected the default option New Project.
8. Click Next.

The New Project wizard displays the Select Images window.

9. Click Add Directories... and select the images folder to add to the project. 
10. Click Next.

The New Project wizard displays the Image Properties window. The image geolocation is automatically loaded from the image EXIF data and is given in WGS84 (latitude, longitude, altitude) coordinates with vertical coordinate system given by MSL = egm96. The camera model is loaded from the camera model database (Bebop2_1.8_4096x3320 (RGB)).

11. Click Next.

The New Project wizard displays the Select Output Coordinate System window. By default the last output coordinate system selected in the software is selected.

12. Select Auto Detected.
13. Select Advanced Coordinate Options and under Vertical Coordinate System select MSL. Set the value to egm96.
14. Click Next.

The New Project wizard displays the Processing Options Template window.

15. Click 3D Models to select the template.

Note: As the goal of this project is to generate the 3D model (no DSM and Orthomosaic), the template to be selected is the 3D Models template.

16. Click Finish to finish the wizard and create the project. The Processing window opens at the bottom of the main window.

B) Processing

1. On the Processing bar, select 1. Initial Processing and deselect 2. Point Cloud and Mesh.
2. On the Processing bar, click Start to start the processing.

When Initial Processing finishes, the rayCloud opens. Points from the sky and background are reconstructed.

C) Improving the results using a Processing Area

For this project, a Processing Area can be used. A Processing Area can be used to remove noisy points from the background and sky. For more information about how to draw a Processing Area with the rayCloud: 202560179.

 

D) (Optional) Point Cloud Editing

If the Processing Area does not remove all noisy points, they can be removed by manually editing the point cloud. For more information about how to manually edit the point cloud in the rayCloud: 202560499.

 

E) Generate the 3D Textured Mesh

 
Important: If the Processing Area has been inserted after step 2 was processed, it affects only the densified point cloud displayed in the rayCloud, but not the files saved in the dic. To apply the changes of the Processing Area to the 3D Textured Mesh, it has to be regenerated.

On the Menu bar, click Process > Generate 3D Textured Mesh to regenerate the 3D Textured Mesh.

 
 

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