UAV Mapping: Photogrammetry or Lidar?: Use Case Session - Ryan Fuselier, Operational Leader, C.H. Fenstermaker & Associates,LLC

Transcript

1. UAV MAPPING – PHOTOGRAMMETRY OR LIDAR • Evolution of UAV Photogrammetry and Lidar Sensors • Difference between Blanket Surface(photogrammetry) and Bare Earth (Lidar) surface • Expected accuracies between Photogrammetry and Lidar • Case Studies: When should traditional survey be replaced with UAV Operations Presentation by: Ryan Fuselier, P.E., RPLS ryan@Fenstermaker.com 337-654-6403
2. EVOLUTION OF UAV PHOTOGRAMMETRY 2013 DJI Enters market with Phantom 1 2013/2014 Battle of Custom Drones 2013/2014 Battle of Open Source Autopilots 2014 PIX4DMapper Software 2015 Battle of the Consumer Brands 2016 SenseFly Ebee RTK 2017 DJI Matrice600
3. EVOLUTION OF MOBILE LIDAR 2005 • $750K • LIMITED MOBILITY 2012 • $250K • INCREASED MOBILITY 2016 • $145K • HIGHLY MOBILE • MINIATURIZED
4. UAV MAPPING – PHOTOGRAMMETRY OR LIDAR Photogrammetry “Blanket Surface” UAV LIDAR “Bare Earth Surface” UAV Photogrammetry UAV LIDAR
5. UAV MAPPING – DELIVERABLES UAV Photogrammetry UAV LIDAR • Rectified Orthomosaic • Point Cloud • Google Earth Overlay • DSM/DTM • No Vegetation Penetration (BlanketSurface) • TYPICAL ACCURACY 1 PIXEL HORZ. 3 PIXEL VERTICAL (1.1”H @400’, 0.6”H @200’ W/ 20MP) • Point Cloud • DSM/DTM • Vegetation Penetration (Bare Earth Surface) • TYPICAL ACCURACY 0.05’ ~ 0.15’ (Survey Grade)
6. UAV MAPPING – CONSIDERATIONS UAV Photogrammetry <=$10K UAV LIDAR $150K • Dependent on lighting condition • Large variation in cameras on the market • Many mapping apps: Maps Made Easy, Pix4D, Drone Deploy, Datumate, etc • Processing and Data Collection apps constantly being updated which can be problematic • Problems stitching photos in areas w/ heavy tree canopy • Requires very good QA/QC process • Independent of lighting conditions • Only a few sensors to choose from • Vendor specific data processing software • Typically consistent accuracies more reliable system • Data typically 1/3 size of photogrammetry • Quicker processing time • Higher day rates • Deployable on various platforms
7. UAV MAPPING – PHOTOGRAMMETRY • Determine flight area • Set overlap • Set altitude • Establish return to home parameters • Low battery 30% • Flight time • Range limitation • Lost link • Excessive winds aloft • Establish landing parameters
8. UAV MAPPING – PHOTOGRAMMETRY – Unit Survey D E L I V E R A B L E S • ½ Day Survey including travel and ground control • 2 Days office to process generate maps • Deliverables • Google Earth KMZ • Orthomosaic • Traditional Topo Map • DTM/DSM • 3D Point Cloud • Dike Containment Calc. ELEV. RELIEF MAP
9. UAV MAPPING – PHOTOGRAMMETRY – Unit Survey D E L I V E R A B L E S ORTHO BASE MAP • ½ Day Survey including travel and ground control • 2 Days office to process generate maps • Deliverables • Google Earth KMZ • Orthomosaic • Traditional Topo Map • DTM/DSM • 3D Point Cloud • Dike Containment Calc.
10. UAV MAPPING – PHOTOGRAMMETRY – Unit Survey D E L I V E R A B L E S CONTAINMENT • ½ Day Survey including travel and ground control • 2 Days office to process generate maps • Deliverables • Google Earth KMZ • Orthomosaic • Traditional Topo Map • DTM/DSM • 3D Point Cloud • Dike Containment Calc.
11. UAV MAPPING – PHOTOGRAMMETRY – Well Pad D E L I V E R A B L E S Site Topo • ½ Day Survey including travel and ground control • 14 Acres • 1.5 Days office to process generate maps • Deliverables • Google Earth KMZ • Orthomosaic • Traditional Topo Map • DTM/DSM
12. UAV MAPPING – PHOTOGRAMMETRY – Site Topo! D E L I V E R A B L E S Site Topo • ½ Day Survey including travel and ground control • 81 Acres • 2 Days office to process generate maps • Deliverables • Google Earth KMZ • Orthomosaic • Surface Contours • DTM/DSM • 3D Point Cloud • CAD design overlay • Client primary use was for prelim layout to bid project! Client was awarded job.
13. UAV MAPPING – PHOTOGRAMMETRY – Cut/Fill! D E L I V E R A B L E S Volume Analysis • 3/4 Day Survey including travel and ground control • 42 Acres • 2 Days office to process generate maps • Deliverables • Google Earth KMZ • Orthomosaic • Surface Contours • DTM/DSM • 3D Point Cloud • CAD Surface • Volumetric Analysis
14. UAV MAPPING – LIDAR D E L I V E R A B L E S SNOOPY A- SERIES
15. UAV MAPPING – LIDAR D E L I V E R A B L E S SNOOPY A- SERIES
16. UAV MAPPING – LIDAR D E L I V E R A B L E S SNOOPY A- SERIES TOPOGRAPHIC EXTRACTION WITH AIRBORNE UAV LIDAR AIRBORNE LIDAR IS NOT JUST FOR SURFACE MODELS
17. UAV MAPPING – LIDAR D E L I V E R A B L E S SNOOPY A- SERIES PORT OF NEW ORLEANS 2006
18. UAV MAPPING – LIDAR D E L I V E R A B L E S USACE 2007
19. UAV MAPPING – LIDAR D E L I V E R A B L E S Oil & Gas Site Containment Analysis 2007
20. UAV MAPPING – LIDAR D E L I V E R A B L E S Vegetation Penetration • 4 linear miles in 17 minutes • 1 set of batteries • Deliverables • DTM/DSM • 3D Point Cloud
21. UAV MAPPING – LIDAR – MULTISPECTRAL-PIPELINE D E L I V E R A B L E S • 107 Acres • 2 sets of batteries • 40 minute flight • Deliverables • DTM/DSM • 3D Point Cloud • Multispectral Stress Map Vegetation Penetration
22. UAV MAPPING – LIDAR – MULTISPECTRAL-PIPELINE D E L I V E R A B L E S Accuracy Check
23. THANK YOU Ryan Fuselier Operations Leader Fenstermaker 337-654-6403 ryan@Fenstermaker.com UAV MAPPING – PHOTOGRAMMETRY OR LIDAR