314 woods- uav mapping history
TRANSCRIPT
UAVImaging
& the Evolution of Mapping
History
Island Futures Conference, Hawaii Convention Center
Presented byHawaii Congress of Planning Officials (HCPO)Hawaii Geographic Information Coordinating
Council (HIGICC)
By: Aaron [email protected]
Aerial CamerasSensefly eBee DJI Inspire 1
Fixed-Wing Rotary-Wing
Weight 1.52 lbs. <700grams Flight Time ~45 Min Payload 16mp CanonAdvantages Long flight time,
Nearly Turn key, Excellent Mission Plan & Flight softwareInherently safe by design
Weight 6.5 lbs. 2935grams Flight Time ~15 Min Payload 12mp DJI X3 (same sensor as GoPro Hero 4)Advantages Vertical Take Off / Landing,
Can Hover stationary in ~20mph wind, 360 Degree Rotating 3 Axis GimbalLive 720p Image broadcast
Historical Maps
Plane Table Surveying
Plane Table Surveying is a graphical method of surveying in which field observations & plotting are done simultaneously.
The plan is drawn by the surveyor in the field while that area to be surveyed is before their eyes.
If it can be seen, it can be mapped.
Photogrammetry:• Photogrammetry is the science, and art, of determining the size
and shape of objects as a consequence of analyzing images recorded on film or electronic media.
123D Catch model Pohaku ‘o Lana’i, Kaiaka Bay Beach Park, Hale’iwa HI. Captured via iPad Mini
Quality Report
UAV Flight Path Image Overlap
Data Generated• Geo tagged Image files • Orthomosaic Geo-Tiff• Google Maps HTML, Earth KML & Mapbox Tiles• Dense Point Cloud .LAS or .LAZ• Digital Surface Model DSM .TIF• 3D Mesh .obj• Contour Lines .shp
Google Orthomosaic
Elevation Accuracy?
Elevaton Test2013 Lidar Value UAV Contour Difference
69.636’ 70’ 0.36472.5’ 72’ -0.5
69.136’ 69’ -0.13631.32’ 31’ -0.32
27.339’ 27’ -0.33923.841’ 24’ 0.159
7.61’ 8’ 0.3922.588’ 23’ 0.412
3D Mesh
Honolulu Natatorium
Document Dangerous areas
Google Earth 3D & UAV 3D Mesh
Google 3D Model UAV 3D Mesh
iPad Digital Photo UAV Densified Point Cloud UAV 3D Mesh
