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UAV – An Eye in the Sky
19-03-2015
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Jesper Falk, COWI A/S
Market Director and Head of Section, Mapping & Surveying Denmark
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Agenda
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› Equipment and Organisation
› Basic output
› Challenges
› Examples of use of UAV data
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COWI Group
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› Danish Engineering and Consulting Company
› 6.200 employees operating worldwide
› Leading Northern European Mapping Division (second largest in Europe)
› Traditional mapping / lidar with aircrafts
› Surveying section
› Traditional equipment: totalstation, GPS, levelling and bathymetric
› New technology: mobile mapping, terrestrial laserscaning and UAV
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UAV and COWI
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› Why UAV and COWI?
› More than 45 years of experience with traditional mapping
› More than 30 years of experience with surveying
› UAV operations started January 2012 in Denmark and September 2014 in Norway.
› Flight permission in Denmark, Norway and Sweden (very soon)
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Equipment and organisation
• 4 no. fixed wing UAV (up to 2.2 kg)
• 2 no. rotorcopter UAV (up to 3.5 kg)
• 11 no. operators and 4 no. processing experts in
Norway and Denmark
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When is UAV an advantage for surveying / mapping?
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› At small and middle-sized mapping projects
› When high level of details is required (2 cm pixel resolution)
› Areas in change (construction, nature or environmental sites)
› Inspection
› Thermal mapping
› 3D modelling
› Other sensors: Lidar, light, sound..
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Orthophotos
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› Examples from previous projects (orthophotos – 3 cm pixel)
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Orthophoto and DTM
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› Grønmo Golf course
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Surfacemodel
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› Planning
› Visualisation
› Building measurements
…..
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Current Challenges 1/2
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› UAV regulations incl. VLOS req.
› Weather conditions – daily planning.
› Standby period – winter, windy, raining etc.
› Quality of sensors (mainly winter period)
› Poor quality= poor accuracy!!
› Poor correlation in forest, water and large farming areas
› Number of GCPs vs. accuracy requirement
› New sensors are introduced all the time
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Current Challenges 2/2
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› A "proper" DTM (process from DSM to DTM)
› Still a time consuming proces but software is "improving".
› Blured building edges
› but software is "improving"
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Selected UAV projects
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› Monitoring of Infrastructure projects
› Automatic classification of vegetation
› Mapping after Natural Disaster
› Mapping of Glacier in the Artic
› 3D model of buildings
› Traffic counting
› Visualisation
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Monitoring of construction site (railway)
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› Ortophoto
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Monitoring of construction site (railway)
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› Terrainmodel with contour lines
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UAV projects for Road Authorities
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› Monitoring of progress
› Check of road markings
› Noise calculation
› Volume calculation
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Classification of Japanese Rose
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Mapping / automatic detection of hogweed
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Mapping after natural disasters
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› Mapping of forest areas
› Orthophoto (detection of trees etc)
› Surface model (height of trees, volume etc.)
› Flooding
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Mapping of Glacier
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3D Mapping of buildings
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› Christian IV Brewery in Copenhagen
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Totalstation = 1.36 m Pointcloud = 1.35 m
Totalstation = 14.16 m Pointcloud = 14.14 m
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Totalstation = 26.43 m Point cloud = 26.45 m
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Minecraft model
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› Minecraft model of Chr. IV Brewery
› Improved Minecraft model (indoor and outdoor) will be ready shortly.
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Traffic Monitoring
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Visualisation
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› Three examples
› Visualisation – Glacier edge in Greenland
› Visualisation – Gravel Pit in Denmark
› Visualisation – extension of a power plant in Copenhagen
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Visualisation
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09-12-2014
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Visualisation
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Our Future….
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› Thermal mapping
› Test is ongoing
› Lidar
› Evaluating test data
› 3D modelling using video
› Test is ongoing
› Multispektral sensors
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Questions
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Jesper Falk Market Director and Head of Section
Mapping and Surveying Denmark Mobile +45 24806706
E-mail [email protected]