Geography Reference
In-Depth Information
Summary
This contribution showed a creation of 3D cartographic model of the Terez´n Main
and Small Fortress in the state of the art during the 2nd WW. The contribution
depicts how we deal with a large amount of data and how we use a hierarchy of the
data for purposes of its visualization. Thus it can be said that the paper depicts a way
how to deal with big hierarchical 3D data.
The first chapter described different approaches of 3D map creation with the
stress to useful rules for creation of 3D symbols and models.
The next chapter described 3D model itself which is divided into modeling of
buildings and fortification. Buildings are modeled in multiple levels of detail for
purposes of dynamic real time visualization. Particular LODs and also the way of
details interpretation (vector, flat textures or hybrid approach) are discussed in
appropriate chapters of the paper. After that discussion a convenient approach
was selected. On the other hand, the shape of the fortification was adopted and
adapted from another project (which reconstructed it from historical plans). The
adaptation consisted of geometric simplification of the original high detailed model
and of proper texturing—to achieve suitable 3D cartographic representation.
Further the contribution narrated about an enrichment of the model by attribute
data via Content Management System and publishing the model on the internet.
This consists of creation of clickable geometries of buildings (outside the Collada
models) and points of interest, collecting documents related to the important places
and people living in Terez´n during 2nd WW and interconnecting these data (both
geometric and attribute) together into CMS.
The final stage is the visualization of the whole model via Google Earth web
browser plug-in with an ability to obtain data from CMS via clicking on interactive
models and popping up a balloon with the information about the place, related
documents, photographs and people. It implies that this paper shows an example of
3D web cartography working with big hierarchical data.
Acknowledgments Authors were supported by projects:
“Landscape of memory. Dresden and Terez´n as places of memories on Shoah”, reg. number
100110544, that was approved for financing within the Objective 3—Support of Cross-Border
Cooperation 2007-2013 between the Independent State of Saxony and the Czech Republic.
“NTIS—New Technologies for the Information Society”, European Centre of Excellence,
CZ. 1.05/1.1.00/02.0090, European Regional Development Fund (ERDF).
NeoCartoLink—Supporting the creation of a national network of new generation of Carto-
graphy, CZ.1.07/2.4.00/31.0010, OPVK.
EXLIZ—CZ.1.07/2.3.00/30.0013, co-financed by the European Social Fund and the state budget
of the Czech Republic.
