Example Datasets Available for Download: Sequoia Multispectral

Agriculture
The goal of this project is to get an NDVI index map of a field using the Sequoia camera that captures Green, Red, Red edge and NIR wavelengths.
Colored NDVI Map
General project information
Project
Location Switzerland
Average Ground Sampling Distance (GSD) 10.66 cm / 4.19 in
Area covered 0.2302 km2 / 23.0239 ha / 0.0889 sq. mi. / 59.9227 acres
Output coordinate system WGS84 / UTM zone 32N
Vertical Coordinate System: MSL egm96
Image acquisition
UAV eBee (senseFly)
Image acquisition plan 1 flight, grid flight plan, 106 meters flight height
Camera Sequoia (Green, Red, Red edge, NIR)
Images
Number of images 712
Image size 1280x960
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 dataset can be found processed on Pix4D Cloud here

The downloaded folder contains the following files and folders: 

  • images: Red, Green, Red edge and NIR images in TIFF format.
  • example_sequoia_msp.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.
**This dataset is not authoritative. For questions regarding the latest camera software and its tags please refer to the Parrot developer's forum (http://forum.developer.parrot.com/c/sequoia) or contact us directly.

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 an NDVI index map for some specific regions.

A) Process the project:

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

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

3. On the Processing window, 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
More information about how to process a project with Sequoia: 209362146
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_sequoia_msp.
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.

 
Note: The images of the Calibration Target must be selected for the Radiometric Calibration. In this particular project, Pix4Dmapper will automatically recognize the images of the Calibration target and will use them for the radiometric calibration. 

10. Click Next.

The New Project wizard displays the Image Properties window. The image geolocation it is already set in the Image Properties window under section Image Coordinate System and does not need to be changed. The image geolocation is loadedThe camera model is loaded from the camera model database (Sequoia (Red, Green, Red edge, NIR)).

11. Click Next.

The New Project wizard displays the Processing Options Template window.

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

12. On the left of the window, select the Ag Multispectral template.
13. 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.

14. Under Unit, select m.
15. Select Auto Detected.
16. Select Advanced Coordinate Options and under Vertical Coordinate System select MSL egm96.
17. Click Finish to finish the wizard and create the project. The Processing window 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 window, 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 about how to process a project with Sequoia: 209362146
 

 

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