Learn how to process your missions and geotagged photos in Pix4D.
- Start a new project and load in the images
- In image properties make sure the coordinate system is set to EPSG 4326 and the Vertical Coordinate System is set to “Geoid Height Above WGS84 Ellipsoid.”
- Select all the images that are 1s. (Use the Event Position .csv file to verify the information.) They should correspond with the image number, if using a system other than DJIs you can select all the images starting with the first image and rename them which will add an image number starting at 1.
- Set the geolocation accuracy to Custom.
- Right click the Accuracy Horizontal(m) cells and change all selected to 0.04m.
- Right click the Accuracy Vertical and change all selected to 0.04m.
- Repeat the process for the 2s, but change the accuracy to 1.5m.
Add in the Calibration Panel #
- Open GCP/MPT Manager within the Pix4D software.
- Open the event position files and find the first or last image that was taken of the calibration panel.
- Click “Add Point” and copy the Latitude and Longitude.
- Enter “Calibration Panel” for the label.
- The altitude should have 0.04m subtracted from it, then add that value to the altitude box.
- Use the basic editor to select all the images with the ground control points. Do this as accurately and zoom in as much as possible.
Additional Settings #
To help clean up the data, under the Processing Options section “Minimum Number of Matches” change the default value from 3 to a value of 6. This will reduce the visual noise from the project.