Open drones
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This document outlines an open source workflow for using drone imagery in mapping and geospatial applications. The workflow involves complying with laws, following best practices, configuring drone settings, planning missions, flying the drone, processing imagery, quality checking, and ground truthing. Products of the workflow include imagery, 3D models, point clouds, orthomosaics, and vegetation indexes. Applications include visualization, surveys, land cover analysis, vegetation analysis, habitat studies, agriculture, hydrology, and publicity. The document concludes some challenges exist with georectification and more experimentation is needed with flight parameters, image processing techniques, and comparison to LiDAR.
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The global energy transition is placing new and unprecedented demands on Distribution System Operators (DSOs). Alongside upgrades to grid capacity, processes such as digitization, capacity optimization, and congestion management are becoming vital for delivering reliable services.
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Open drones
- 1. Open Drones A free and open source workflow for the use of drone imagery in mapping and geospatial applications Thomas Starnes @bio_carta
- 2. Overview • Background • Workflow • Products • Applications • Conclusions
- 3. Overview • Background • Workflow • Products • Applications • Conclusions
- 4. Background Published by Environment Agency under Open Government Licence (c) David Morris
- 5. Overview • Background • Workflow • Products • Applications • Conclusions
- 6. Workflow • Comply with the law • Follow best practice guidelines (more on this later) • Configure settings • Plan and program a mission • Fly • Process imagery • Quality check/validate • Ground truthing Drone Assist from NATS, Altitude Angel
- 7. Workflow
- 9. Workflow
- 10. Workflow
- 11. Workflow
- 13. Workflow
- 15. Photogrammetry Cimoli, E.; Marcer, M.; Vandecrux, B.; Bøggild, C.E.; Williams, G.; Simonsen, S.B. Application of Low-Cost UASs and Digital Photogrammetry for High-Resolution Snow Depth Mapping in the Arctic. Remote Sens. 2017, 9, 1144.
- 17. Overview • Background • Workflow • Products • Applications • Conclusions
- 18. Products • Oblique imagery • 3D textured mesh (LAS, XYZ etc.) • Point cloud • Orthomosaic imagery (e.g. GeoTIFF) • Digital surface model – Slope – Aspect – ‘Structure’ • Thermal imagery • Normalised Difference Vegetation Index
- 21. Drone orthomosaic vs. aerial imagery
- 24. Overview • Background • Workflow • Products • Applications • Conclusions
- 25. Applications • Visualisation and interpretation • Surveys and counts • Land cover analysis • Vegetation height and structure analysis • Microhabitat study • Precision agriculture and set-aside • Hydrological analysis • Publicity
- 26. Applications
- 27. Overview • Background • Workflow • Products • Applications • Conclusions
- 28. Conclusions • Very efficient workflow • Some pitfalls with image georectification • Need to experiment with: – Ground Control Points – Flight altitude vs. flight speed – Camera settings e.g. shutter speed – Image classification – Digital terrain models – Comparison with LiDAR
- 30. Thank you thomas.starnes@rspb.org @bio_carta The RSPB is part of BirdLife International, a partnership of nature conservation organisations working to give nature a home around the world.
Editor's Notes
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