AirborneHydroMapping

AirborneHydroMapping
New possibilities in bathymetric and topographic survey
NIRAS og AHM, projekt for Statens Kartverk
”Dataíndsamling i kystsonen med LiDAR system”
NIRAS, DANMARK
• Etablert i 1956
• Ingeniørfirma med ca. 1400 ansatte
• Introduserte i samarbeid med AHM
luftbåren ”undervands
laserscanning”/green LiDAR i Danmark
i 2013.
AHM, ØSTERRIKE
• Etablert i 2010
• Specialiseret i Airborne Hydro Mapping
• Stærke relationer til forskningsmiljø og
scanner industri
• Har dybdekartlagt mer enn 1200km elv
og 350km kyst
• Samarbejde med NIRAS i start 2013
AIRBORNE
HYDROMAPPING
(2008 – 2011)
Layout needs from water engineering side:
- Shallow water applications
- High point density
- Good geometrical resolution
- Usage of sensor for topographic and bathymetric side
- Multiple signal detection
- Light weight and compact sensor
Markus Aufleger . WASSERBAU INNSBRUCK
5
FFG-Project „Airborne Hydromapping“ 2008-2011
A lot of work .... :
Markus Aufleger . WASSERBAU INNSBRUCK
6
What’s topo-bathymetry?
side
side
A seamless, geometric information from land to water
Areas affected by changes: Shallow water areas
Shallow water: 0m – 10m
Cross-sections are the classic way of survey by using
different sensor
€!
Dangerous 
Prohibited or protected areas
High in cost and time 
Many different sensors 
Areas affected by changes: Shallow water areas
Shallow water: 0m – 10m
Cross-sections are the classic way of survey by using
different sensor
€!
Classic ALS:
not
water
penetrating
laser beam
Dangerous 
Prohibited or protected areas
High in cost and time 
Many different sensors 
?
?
?
?
?
?
?
?
?
A lot of work for
inconsistent,
non spatial,
and still missing data!

10
Survey altitude
~500m AGL
High resolution bathymetric survey Hydromapping
Point density
>20points/m²
532nm,
water penetrating laser
beam
Accuracy under
water ~5cm
Shallow water areas 
The entire foreland 
Only deeper areas need to be captured by echo sounders 
Only two sensors 
Only one calibration 
Spatial data 
12
Bathymetric survey: Baltic Sea coast, Germany
Hydromapping
July 2012
~387.000.000 points
Clear water conditions
Depth down to 8 m
Sonar
July 2012
Depth down to 10 m
Bathymetric survey: Baltic Sea coast, Germany
Water surface & classified points
Bathymetric survey: Baltic Sea coast, Germany
Combined topographic and bathymetric map
Bathymetric survey: Baltic Sea coast, Germany
Detecting and reconstruction the water surface
Bathymetric survey: Baltic Sea coast, Germany
Combined topographic and bathymetric surface model
Bathymetric survey: Baltic Sea coast, Germany
Comparison hydromapping and sonar data 2012
Bathymetric survey: Baltic Sea coast, Germany
Comparison hydromapping and sonar data 2012
Bathymetric survey: Baltic Sea coast, Germany
Comparison hydromapping and sonar data 2012
Bathymetric survey: Baltic Sea coast, Germany
Looking for underwater vegetation
Bathymetric survey: Baltic Sea coast, Germany
Looking for underwater vegetation
Bathymetric survey: Baltic Sea coast, Germany
Looking for underwater vegetation
North Sea – Tidal areas and high turbidity
Influences of water surface changes / “flowing” turbidity
Bathymetric survey: Rheinfelden, Germany
6 km long section of the
Rhine river
Hydromapping
April 2012
~243.000.000 points
Increased turbidity
due to construction
work
Depth down to 3,5 m
Sonar
December 2011
January & May 2012
4.430.000 points
Depth 3-25 m
HydroVISH features:
+ point cloud
classification
+ cross section
extraction
+ water surface
+ riparian water line
+ contour plots and
break lines
+ splats visualization
+ DSM, numerical
models
+ .......
HydroVISH features:
+ point cloud
classification
+ cross section
extraction
+ water surface
+ riparian water line
+ contour plots and
break lines
+ splats visualization
+ DSM, numerical
models
+ .......
HydroVISH features:
+ point cloud
classification
+ cross section
extraction
+ water surface
+ riparian water line
+ contour plots and
break lines
+ splats visualization
+ DSM, numerical
models
+ .......
Inclination & beam
divergence
- 20° backward
- footprint size: 50cm
These two issues guarantee:
- good geometrical
resolution
- better view underneath
vegetation and manmade structures
- capture also vertical
structures and facades
HydroVISH features:
+ point cloud
classification
+ cross section
extraction
+ water surface
+ riparian water line
+ contour plots and
break lines
+ splats visualization
+ DSM, numerical
models
+ .......
Bathymetric survey: Riparian areas
Inclination & beam divergence: Improved look underneath vegetation
20° inclination – Advantage of not looking nadir
Bathymetric survey Lech:
River survey and small object detection and changes:
-
New hydraulic model
Input for groundwater model
Planning on riparian structures
Static behavior of dike structures
Monitoring of ecologic measures
Monitoring of sedimentation and
changes of natural Lech riverbed
- Monitoring of dike structures
Bathymetric survey 2014: Lake Constance, Germany
-
Lake bottom structure
Harbor maintenance
Reed analysis
Diving charts
Waste water inlets into
lake
- Morphologic studies in
estuary areas
Latest hydromapping tasks
Morphology, waterline during flood, oil tank leakage
Latest hydromapping tasks
Morphology, waterline during flood, oil tank leakage
ISAR in München
Vorher
Nachher
Morphologic changes between flood flows
(2011/2013)
End user solutions on topobathymetric datasets
New hydraulic possibilities:
Combined management and visualization of data and process results:
Numeric and processing results are visualized on measured data
End user solutions on topobathymetric datasets
New hydraulic possibilities:
Combined management and visualization of data and process results:
Numeric and processing results are visualized on measured data
End user solutions on topobathymetric datasets
New hydraulic possibilities:
Combined management and visualization of data and process results:
Numeric and processing results are visualized on measured data
End user solutions on topobathymetric datasets
New hydraulic possibilities:
Combined management and visualization of data and process results:
Numeric and processing results are visualized on measured data
Ice&SnowMapping
Ice&SnowMapping
LandMapping
LandMapping
LandMapping
LandMapping
Frafjord valley
LandMapping
Infrastructure data: measurement in each directions, including facades
LandMapping
LandMapping
LandMapping
Old way of representing a DSM
LandMapping
DSM now representing everything in 3D (Volumemodel)
Infrastructure planning
Infrastructure 3D volume models out of pointclouds for architects
Solardachanalyse
LandMapping
Infrastructure analysis – high point density / geometrical resolution
Solardachanalyse
LandMapping
Infrastructure analysis – extracting details
Solardachanalyse
LandMapping
Infrastructure analysis – extracting details (solar potential, snow load
calculation, detecting illegal changes in infrastructure
Size, orientation and inclination of roof tops
Solardachanalyse
LandMapping
Infrastructure analysis – extracting details (solar potential, snow load
calculation, detecting illegal changes in infrastructure
Detecting roof windows, solar panals
NatureMapping
NatureMapping
Multisensor data survey for topographic and bathymetric purposes
- Green Lidar
(entire topographic and bathymetric dataset from one source)
- Thermal- Camera (groundwater,
detection of water inlets, temp.
distributions)
- 4K video taping
- RGB-Camera (Aerial pictures)
High-resolution laser pointclouds
as basic and applicable dataset
for further multisensor data
handling
AHM GmbH &
AHM Software&Research GmbH
HydroVISH
HydroVISH Viewer
Data Viewer, Data Viewer in combination with GIS for municipalities
Viewer: representing morphological
changes during two periods
HydroVISH Viewer
Data Viewer, Data Viewer in combination with GIS for municipalities
AHM GmbH &
AHM Software development GmbH
Data Capturing
-
Data Captured
Speed/Performance
Economic / Ecologic
(small CO2-footprint)
Silent in operation
No direct access to ecologic &
protected areas
• Cut-outs for cross-sections
• Walking in protected areas
(even more than one time)
• Protection of plants
• No disturbance of
animals/birds
• No contact with water
zones
High resolution survey
Documentation (survey&picture)
Multisensor concept for
different research topics
• Turbidity
• Morphology
• Vegetation (land and under
water)
• Water detection (shallow
water zones)
• Habitat structures (insects,
fish, small animals)
• Floodplain structures
AHM GmbH &
AHM Software development GmbH –
academic spin-off and company
Foundation: November 2010
Head quarters: Innsbruck, Austria
Employees: 12 + students
Management: F. Steinbacher, M. Aufleger, University of Innsbruck
i2b-Award Winner Austria 2010: Best technical development and business concept
2013: Innovationspreis 2013
www.niras.com
www.ahm.co.at