Example Datasets Available for Download: Agriculture

Agriculture
The goal of this project is to get a NDVI index map of a field using a Canon Power Shot S110 that captures Red, Green and NIR wavelength.
Reflectance Map Index Map Classes (shapefile) Colored Index Map Classes
General project information
Project
Location USA
Average Ground Sampling Distance (GSD) 4.36 cm / 1.71 in
Area covered 0.8892 km2 / 88.9162 ha / 0.3435 sq. mi. / 219.83 acres
Output coordinate system WGS84 / UTM zone 15N
Vertical Coordinate System: Geoid Height Above WGS 84 Ellipsoid = 0 meters
Image acquisition
UAV eBee Ag (senseFly)
Image acquisition plan 1 flight, grid flight plan, 118 meters flight height
Camera Canon Power Shot S110 NIR (Red, Green, NIR)
Images
Number of images 520
Image size 4048x3038
Image geolocation coordinate system WGS84
GCPs
Number of GCPs None
GCPs coordinate system None
Download* and project files

The dataset can be downloaded here.

The downloaded folder contains the following files and folders: 

  • images: Red, Green, NIR images in JPG format.
  • inputs/image_geolocation.txt: image geolocation file.
  • example_agriculture.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

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 a NDVI index map for some specific regions.

A) Process the project:

1. Open the project example_agriculture.p4d by double clicking on the file.
2. On the menu bar, click View > Processing. The Processing bar opens at the bottom of the main window.

 
Note: As this project's goal is to generate a NDVI Index Map, the Ag Modified Camera template has been selected.

3. On the Processing bar, click Start to start the processing.

 
Note: The Index Calculator can be used to generate indices for different regions of the project. More information can be found on our webinar about precision agriculture: 204869965
Process the dataset creating a new project

This section describes how to create and process a project in order to generate a NDVI index map for the whole project.

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_agriculture.
5. (Optional) In Create In: Click on Browse, and on the Select Project Location pop-up window, 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 with the same name as 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) Activate 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 the images to the project.
10. Click Next.

The New Project wizard displays the Image Properties window. The image geolocation does not exist in the image EXIF data and has to be loaded from a file. The image geolocation coordinate system is WGS84 with vertical coordinate system given by a Geoid Height Above WGS 84 Ellipsoid of 0 meters. It is already set in the Image Properties window under section Image Coordinate System and does not need to be changed.

11. In the section Image Geolocation > Geolocation and Orientation, click From File....
12. On the Select Geolocation File window, under File Format, keep selected the default option Latitude, Longitude, Altitude.
13. On the Select Geolocation File window, under File, click Browse....
14. Select the image geolocation file image_geolocation.txt from the inputs folder and click Open.
15. On the Select Geolocation File window, click OK.

The image geolocation is loadedThe camera model is loaded from the camera model database (CanonPowerShotS110_5.2_4048x3048 (Red,Green,NIR)).

16. Click Next.

The New Project wizard displays the Processing Options Template window.

 
Note: As this project's goal is to generate a NDVI Index Map, the template to be selected is the Ag Modified Camera template.

17. On the left of the window, select the Ag Modified Camera template.
18. 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.

19. Under Unit, select m.
20. Select Auto Detected.
21. Select Advanced Coordinate Options and under Vertical Coordinate System select Geoid Height Above WGS 84 Ellipsoid. Set the value to 0.
22. Click Finish to finish the wizard and create the project. The Processing bar opens at the bottom of the main window.

B) Process the project:

1. On the menu bar, click Process > Processing Options... to open the Processing Options window.
2. On the Processing bar, click Start to start the processing.

Once processing is finished, the NDVI Index Map can be visualized and exported in the Index Calculator.

 
Note: The Index Calculator can be used to generate indices for different regions of the project. More information can be found on our webinar about precision agriculture: 204869965.
 

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