|The goal of this project is to generate the DSM and the Orthomosaic of a village using a Canon IXUS 120IS.|
|Densified Point Cloud||3D Textured Mesh||Point Cloud - Terrain||Point Cloud - Objects||DTM||Raster DSM||Orthomosaic||Grid DSM|
|Google Maps Tiles||KML||Pix4D Cloud||Contour Lines||Contour Lines - DTM||3D PDF|
|General project information|
|Average Ground Sampling Distance (GSD)||5.1 cm / 2 in|
|Area covered||0.2128 km2 / 21.2822 ha / 0.0822 sq. mi. / 52.6167 acres|
|Output coordinate system||WGS84 / UTM zone 32N
Vertical Coordinate System: Geoid Height Above WGS 84 Ellipsoid = 0 meters
|UAV||swinglet CAM (senseFly)|
|Image acquisition plan||1 flight, grid flight plan|
|Camera||Canon IXUS 120IS (RGB)|
|Number of images||70|
|Image geolocation coordinate system||WGS84|
|Number of GCPs||12 3D GCPs|
|GCPs coordinate system||WGS84|
|Download* and project files|
The dataset can be downloaded here.
The dataset can be found processed on Pix4D Cloud here.
The downloaded folder contains the following files and folders:
*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.
Follow the instructions to:
|Process the dataset using the included .p4d project file|
This section describes how to process the dataset in order to generate the DSM and the Orthomosaic of a village.
1. Open the project example_cadastre.p4d.
3. On the Processing bar, click Start to start the processing.
|Process the dataset creating a new project|
This section describes how to create and process a project in order to generate the DSM and the Orthomosaic of a village.
A) Create a new project:
1. Start Pix4Dmapper.
6. (optional) Select the check box Use As Default Project Location to save all new projects in the selected folder.
The New Project wizard displays the Select Images window.
9. Click Add Directories... and select the images folder to add the images to the project.
The New Project wizard displays the Image Properties window. The image geolocation is automatically loaded from the image EXIF data. The coordinate system is automatically set to WGS84 with vertical coordinate system given in MSL egm96. As the image geolocation is given in WGS 84 with vertical coordinates system in Geoid Height Above WGS 84 Ellipsoid = 0, the coordinate system has to be changed.
11. On the Image Geolocation > Coodinate System click Edit....
In the Image Properties window, the camera model is loaded from the camera model database (CanonDIGITALIXUS120IS_5.0_4000x3000 (RGB)).
15. 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.
16. Select Auto Detected.
The New Project wizard displays the Processing Options Template window.
19. Click 3D Maps to select the template.
20. Click Finish to finish the wizard and create the project. The Processing window opens at the bottom of the main window.
B) Introduce and mark the GCPs:
1. On the Menu bar, click Project > GCP / MTP Manager....
The GCP/MTP Manager window opens. Change the GCP Coordinate System to be WGS 84 with a vertical coordinate system given by a Geoid Height Above WGS 84 Ellipsoid of 0 meters.
2. On the GCP Coordinate System section, click Edit....
The GCPs and their position are imported and can be visualized in the GCP/MTP Manager window.
11. On the GCP/MTP Manager window click OK.
When step 1. Initial Processing is finished the rayCloud opens.
14. Mark the GCPs using the rayCloud following instructions 2. to 11. as described here 202560769. The images in the folder inputs/gcp_overview help to identify where to mark the GCPs.
C) Generate the DSM and Orthomosaic
When the GCPs are marked and the project is re-optimized.
1. On the Processing bar deselect 1. Initial Processing and select 2. Point Cloud and Mesh and 3. DSM, Orthomosaic and Index.