Cleaning Ocean Floor Scanning Data Presenters: � MADALGO, AU:

� World-class algorithms research � Lars Arge

� SCALGO ApS:

� MADALGO based startup � Transforming research to products � Freek van Walderveen

� EIVA A/S:

� Marine survey solutions provider � Ole Kristensen

Describe project that started as research and ended with successful product

Also involved: � Statoil: Pipeline owner

– End client � DOF Subsea, DeepOcean and Subsea 7

– Survey companies operating worldwide on seabed mapping, pipeline inspection and subsea construction

• Software manager @ EIVA • Math & Computer Science at AU 1983–88 • Has been with EIVA for 22 years • Lead product programmer since 1997 • Head of software department since 2000

Speaker – Ole Kristensen

Optimising the businesses of offshore professionals

with sustainability as our beacon

Markets

Markets (cont’d)

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Advanced software … making data headway

Multi-beam surveys and seabed mapping

Pipeline and cable route inspections

Template and foundation placement

Side-scan surveys Rig move and anchor handling

NaviSuite Nardoa

Dredging Subsea positioning 2D seismic surveys Data management and GIS

Permanent monitoring

Hydrographic surveys

Structure and seabed inspection

NaviSuite Edulis NaviPac Navigation and positioning

NaviScan Sonar data acquisition

NaviEdit Survey data editing

NaviModel 4D modelling and visualisation

NaviPlot Chart production

• Mapping the seabed at huge water depth

• Use of laser scanners and multi-beam echo sounders

• Massive amount of data • Not as simple as ‘onshore’ • Noise in water column • Low-precision

georeferencing

The challenge

• Make a smooth and nice image • Clearly identify the pipe/cable • Visualise details of all elements

- Pipes - Rocks - Pockmarks - Anchor scarring - Fishing trawls

• Merge with other data such as video

The goal

Expectations Detailed – but looks nice

(Image courtesy of Statoil Norway)

The real world You can barely see the important parts

From left to right • Keep the details • Get the nice look

Find a solution! • Traditional automated

tools failed – erased too much or too little

• Manual cleaning works – but way too slow

• Not consistent

• The S-CAN solution works, and it’s efficient • DOF Subsea: 'By means of the S-CAN

feature, we have reduced the time spent on cleaning by more than 25 percent, and we obtain a far better overall result,’ Lead Data Processor Per Norvald Boge

• Accepted by end clients such as Statoil, Stattnet and Gassco

• Licensed to more than 125 users worldwide • Ideas for improvement

A success

• Fast: Speeds up the cleaning process • Reliable: The filter erases what it’s supposed to • Consistent: 10 users get the exact same result • Easy to use: You don’t need to have a degree in

math to use it

S-CAN conclusion