viesore - visual impact evaluation system for offshore renewable energy
DESCRIPTION
Talk presented at the 2012 OK South Central Arc Users Group meeting, Moore, OK, Sept 25, 2012.TRANSCRIPT
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VIESOREVisual Impact Evaluation System for Offshore Renewable Energy
Chad Cooper, Snow Winters, Malcolm Williamson, Jackson Cothren
Center for Advanced Spatial Technologies
University of Arkansas, Fayetteville
Robert Sullivan
Argonne National Laboratory
Argonne, Illinois
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Credits/disclaimer
• funded by Bureau of Ocean Energy Management (BOEM)
• on-going study• not meant to represent BOEM policy
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Offshore wind 101
• First offshore wind farm – Denmark 1991• 2010 – 39 offshore farms off coasts of UK,
Europe, and Scandinavia• Largest turbines now over 500 feet tall• Power carried to land via transmission
cable• Wind energy contractors submit site
proposals to governing bodies– Contractors provide photomontages
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Cape Windwww.capewind.org
www.capewind.org
Offshore windfarms coming to the U.S.
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Offshore windfarms coming to the U.S.
Cape Windwww.capewind.org
www.capewind.org
phot
omon
tage
s!
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...and in come the proposals
Bureau of Ocean Energy Management (BOEM) reviews all project proposals
within federal waters• offshore oil and gas exploration• offshore wind• wave• tidal flow• ocean current• environmental laws and regulations
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Offshore wind 101 – Cape Wind• Siemens SWT 3.6-107
– rotor diameter – 107m (351ft)– total turbine height – 132m (433ft)
• 130 turbines arranged in a grid• 12.5 miles of transmission cable• partial generation planned for 2015
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BOEM system requirements
The system must:• enable spatial design of offshore facility• import geospatial data• allow user control of atmospheric, lighting, wave
conditions• generate spatially accurate and realistic visualizations • output reports and images• provide a user-friendly interface
It shall enable users to:• evaluate photomontages in environmental impact
statements (EISs)• independently assess proposed facilities
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ApproachPhotomontages
Pros:• realistic• accepted• accurate* *dependent upon lens used
Cons:• need photos from every potential point of interest
– oops, we didn’t take a photo from there!
• difficult to show different lighting/weather conditions• human error
www.capewind.org
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ApproachPhotomontages
Pros:• realistic• accepted• accurate* *dependent upon lens used
Cons:• need photos from every potential point of interest
– oops, we didn’t take a photo from there!
• difficult to show different lighting/weather conditions• human error
www.capewind.org
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Approach3D visualizations
Pros:• CAST does 3D• photorealistic• Vue Python API
Cons:• learning curve• you need horsepower• user interface is scary
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Approach
3D visualizations via
GIS interface
Pros:• CAST does 3D• photorealistic• Vue Python API
Cons:• user interface is scary• learning curve• you need horsepower, but affordable
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System design
SHP
ArcGIS 10.0script tools
JPG
ReportsRenders
Input data
ArcGIS 10.0friendly interface
Videos
HMTL
batch
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System design
SHP
ArcGIS 10.0script tools
JPG
ReportsRenders
Input data
ArcGIS 10.0friendly interface
Videos
HMTL
batch
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System design
SHP
ArcGIS 10.0script tools
JPG
ReportsRenders
Videos
Input data
ArcGIS 10.0friendly interface
xml
Log
Log
Log
.vue
xmltemplateHMTL
.atm.mat
batch
project
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Development to date
• translate data for import into Vue– digital elevation– wind turbine generator (WTG) point locations– key observation points (KOPs)
• import above data into Vue• move objects around as needed, adjust size• import 3D WTG model• set camera and sun position• render to jpeg
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Development to date
• translate data for import into Vue– digital elevation– wind turbine (WTG) point locations– key observation points (KOPs)
• import above data into Vue• move objects around as needed, adjust size• import 3D WTG model• set camera and sun position• render to jpeg
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Data translations
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Kitty Hawk, NC1/9 arc-second NEDvertical accuracy +/- 1 meter
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Oregon coast1/9 arc-second NED
vertical accuracy +/- 1 meter
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Key observation pointsA.K.A., the camera
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WTG placement
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Current results
Real-world GIS data brought into Vue
Photorealistic renderings
User-friendly interface
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Current results
Real-world GIS data brought into Vue
Photorealistic renderings
User-friendly interface
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Current results
Real-world GIS data brought into Vue
Photorealistic renderings
User-friendly interface
- still working on that...
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Renders
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Issues tackled
• Vue data formats• Data translations galore• Using real-world data in software that
wasn’t really made for it• Coarse-grained Vue Python API makes
you come up with creative workarounds
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Still to do
• User interface to Vue– Toolbox designs and
linkage to Python scripts
• ArcToolbox tools• wxPython
• Report generation– Python
• Help/documentation
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