Applications

Creating geo-referenced orthomosaics and Digital Elevation Models (DEM) with your swinglet CAM is only a matter of a few clicks. We provide special flight features and a PostFlight service to obtain your results quickly.

Assisted planning
Auto flight planning

Automated flight

The e-mo-tion software allows you to designate a zone to be systematically photographed by drawing a rectangle over a map. Orientation and size of this rectangle can be modified to cover exactly the desired area. In a second step, you will be asked to select the desired ground resolution and image overlap. Once finished a flight plan according to your desired parameters will be created.

Automated mapping
Footprint

In-flight quality control

The swinglet CAM follows its flight plan and automatically triggers photos while taking into account the wind and its own flight speed. Image footprints are displayed in real-time in e-mo-tion, which enables visual control of ground coverage and photo overlap.

Orthomosaic
Earth icon

From images to maps

The included PostFlight Suite software allows you to associate each image with its position and orientation. Furthermore, you can access our PostFlight Services to upload the geo-tagged images and obtain a global orthomosaic and Digital Elevation Model (DEM). The web-based service that can automatically process up to 500 images, is fully automated and requires no manual interaction. Geo-referenced orthomosaic and DEM can be obtained without the need for ground control points. The uploading to our PostFlight Services and the initial processing are free of charge. Users order and pay only if satisfied with the quality report generated by the service before final processing of the results. Check our PostFlight Services section in our FAQ for more details.

How does it work?

  1. Use e-mo-tion assisted planning to generate a flight plan.
  2. Launch your swinglet CAM.
  3. Upon landing, transfer the images from the swinglet CAM to your computer
  4. Use the PostFlight Suite to tag the images with GPS and orientation information from the logfile.
  5. Upload geotagged images from the PostFlight Suite to the PostFlight Server (internet connection required).
  6. Consult the automatically generated quality report:
    • the quality of image reconstruction (completeness,  etc)
    • the number and distribution of automatically detected matching points
    • the quality of the DEM (completeness, homogeneity) and critical areas with possible impact on orthomosaic
    • the quality of the orthomosaic (relative georeferencing accuracy, missing areas, etc.).
  7. Select the output options and launch the final processing (payment through paypal).
  8. The automated process on the PostFlight server (see column on the right) generates the geo-referenced orthomosaic and DEM in a few hours.
  9. Acess PostFlight Services on http://postflight.sensefly.com and download the resulting files.

Automated Orthomosaic & DEM

  • The software searches for matching points by analyzing all uploaded images.
  • Those matching points and approximate values of the image position & orientation are used in a bundle block adjustment to reconstruct the exact position and orientation of the camera for every acquired image.
  • Based on this reconstruction the matching points are verified and their 3D coordinates calculated. The geo-reference system is WGS84, based on GPS measurements from the autopilot during the flight.
  • Those 3D points are interpolated to form a triangulated irregular network in order to obtain the DEM (Digital Elevation Model).
  • This DEM is used to project every image pixel and calculate the georeferenced orthomosaic (also called "true orthophoto").
  • This service is powered by Pix4D.

 

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