Applying 3D Landscape Modeling in Geodesign

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Applying 3D Landscape Modeling in Geodesign
Joerg SCHALLER
Keynote: 31 May 2012
Abstract
Sustainable Landscape Planning and Landscape Architecture are using spatial data and are
applying GIS methods and technologies to depict spatial and time-related interrelationships.
At one hand GIS data, evaluation and assessment models are needed in the planning
process as well as sophisticated tools to display the results of planning efforts. Secondly all
developed designs have to be approved for quality using digital 2D and 3D GIS
visualization and modeling technologies.
The assessment of the social, environmental and sustainable quality of a landscape development – or project implementation design plan can be carried out by using Geodesign tools
in several steps of the Geodesign framework proposed by Carl Steinitz (STEINITZ et al.
2003).
Fig. 1:
Carl Steinitz: Designing Alternative Futures
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Every environmental assessment of the planning output in form of scenarios or project
alternatives requires the application of model coupling in different dimensions to provide
the necessary balancing information to decide whether a scenario or a project alternative is
convincing related to the selected social and environmental assessment criteria.
The complex requirements of Godesign applications are nowadays supported by high end
GIS and remote sensing data gathering methods such as RADAR, LiDAR DTM and DSM
data, high resolution satellite data, stereo camera images etc., as well as automated draping
technologies for 3D objects.
These technologies allow the creation of synthetic and photorealistic 3D landscape
visualizations and simulations to display planning alternatives, scenarios and depict clearly
their impact on landscape scenery.
The assessment of impacts on landscape structure and scenery is an important requirement
for landscape architects as partners of architectural designers, rural land consolidation
planners or engineering planners designing new infrastructure or settlement developments.
3D Landscape modeling is therefore an important tool to speed up Geodesign processes and
to support ad hoc decisions of the design quality related to landscape scenery.
Nowadays all stakeholders of a planning process are involved in the decision finding and it
is a necessary requirement to react fast on inputs and to depict the consequences of the
Fig. 2:
3D Visualization of Vorarlberg
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stakeholders proposals via ad hoc visualization. If we are able to provide all these tools in
the near future (some of them have been already realized) we will create transparency in the
public and in consequence the necessary acceptance of the stakeholders to implement the
plan.
The presentation will include some actual application and assessment examples of 3D
landscape modeling for environmental planning purposes ().
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