mbes and laser scanning data progress on processing challenges
DESCRIPTION
Presentation by senior hydrographic surveyor Niels Wienke (GEO+) on practical aspects of laser scanning data progress on processing challenges.TRANSCRIPT
Workshop HSB
Saturday 8 April 2023 Geo Plus
MBES and Laser Scanning data
Progress on processing challenges
Niels WienkeSenior Hydrographic Surveyor
From acquisition to visualisation
Saturday 8 April 2023 Geo Plus
Acquisition: high quality data
Processing: softwarevalidationinterpretation
Visualisation: purpose of dataanalyse
Footprints jack-up Eemshaven
AcquisitionMultifunctional survey vessels
Saturday 8 April 2023 Geo Plus
Functions:• Bathymetric en geophysical surveys• Combining sensors• Fast Crew tender• Prepared for temporary installation
of additional equipment (OTS/Tow)
Challenge:• Combining functions with the
leastpossible compromises
• Dealing with air
MBES - Dealing with airKongsberg Product Seminar
Saturday 8 April 2023 Geo Plus
Dealing with airKongsberg Product Seminar
Saturday 8 April 2023 Geo Plus
Dealing with airKongsberg Product Seminar
Saturday 8 April 2023 Geo Plus
Dealing with airKongsberg Product Seminar
Saturday 8 April 2023 Geo Plus
Dealing with airMARIN - hydrodynamics
Saturday 8 April 2023 Geo Plus
LaserscanMobile system on its own platform
Saturday 8 April 2023 Geo Plus
LaserscanArgo 8x8 amphibious vehicle
Saturday 8 April 2023 Geo Plus
ProcessingSoftware
Saturday 8 April 2023 Geo Plus
Capabilities:• Large datafiles – laser: 300.000 pts/s• Validation of data• Analysing data• Visualisation of data
Challenge:How to process the huge amount of data to a useful product
ProcessingSoftware
Saturday 8 April 2023 Geo Plus
• Every product needs its own working method!• Combination of different kinds of software• Procedures for specific products• Research and development• Partners
ProcessingSituations
Saturday 8 April 2023 Geo Plus
Multibeam• Bathymetric surveys• Stone dumps• Cablelaying and pipelines
Laserscanner• Monitoring breakwaters• Inspections survey• Bridge clearance
Challenge: combining data from different sensors
Saturday 8 April 2023 Geo Plus
Multibeam: Kongsberg EM2040
Saturday 8 April 2023 Geo Plus
Kongsberg EM2040
Normal mode – 300 kHz
Saturday 8 April 2023 Geo Plus
Processing
Cleaning data:
- Manual- Filter methods- Area based editing- CUBE
Saturday 8 April 2023 Geo Plus
Processing
CUBE - Combined Uncertainty and Bathymetry Estimator
- Error based model – estimates depth along with a confidance interval- Automatically cleaning most of the data- Generating hypotheses for the operator to review
Error sources and sizes should be known• Systematic errors• Blunders• Uncertainty
Saturday 8 April 2023 Geo Plus
CUBE (Fledermaus)
Saturday 8 April 2023 Geo Plus
CUBE (Fledermaus)
Saturday 8 April 2023 Geo Plus
CUBE (Fledermaus)
Saturday 8 April 2023 Geo Plus
FledermausVisualising Sonar Watercolumn data
Saturday 8 April 2023 Geo Plus
FledermausVisualising Sonar Watercolumn data
Saturday 8 April 2023 Geo Plus
Laserscan – bridge clearance
Saturday 8 April 2023 Geo Plus
Laserscan – bridge clearance
Challenges:• Quality of data – provable• Minimum height - profile
Software• Leica cyclone – check quality, selecting points, profiling• 3D reshaper – processing and polygonal mesh (3D model)
Saturday 8 April 2023 Geo Plus
Laserscan – bridge clearance
Saturday 8 April 2023 Geo Plus
Laserscan – bridge clearance
Saturday 8 April 2023 Geo Plus
EM2040 – Laser combinationRecording status - monitoring
Photo
Laser
Multibeam
Saturday 8 April 2023 Geo Plus
EM2040 – Laser combination
Saturday 8 April 2023 Geo Plus
Mobile mapping video• Technology cluster• Research sonar processing with
- Horus view and explore- TNO Intelligent Imaging- Geo Plus
Integration and visualisation of underwaterand above water images and data
Saturday 8 April 2023 Geo Plus
Mobile mapping video• 360° georeferenced video• Multi sensor: - Multibeam data
- Side scan sonar- Laser- Infrared- GIS / Cad topography
• Inspection – monitoring situations• Free Horus movie player
Saturday 8 April 2023 Geo Plus B.V.
Saturday 8 April 2023 Geo Plus B.V.
Saturday 8 April 2023 Geo Plus B.V.
Saturday 8 April 2023 Geo Plus B.V.
Saturday 8 April 2023 Geo Plus B.V.
Saturday 8 April 2023 Geo Plus B.V.
EU
RP
res2
0120
087
– F
C –
170
9/20
12
Ghent University, Belgium, September 17 – 20, 2012
37
Block settling between 2011 and 2012
Saturday 8 April 2023 Geo Plus
Conclusions
• Every kind of measurement / project needs its own processing method
• Combining software creates a new level of visualisation
• Innovative techniques can help processing• Research and improvements of software is
needed for dedicated situations
Questions?
Saturday 8 April 2023 Geo Plus B.V.