Prof. Dr. Jürgen Döllner


Automated Construction of Urban Terrain Models

Buchholz, Henrik; Döllner, Jürgen; Ross, Lutz; Kleinschmit, Birgit in Progress in Spatial Data Handling. 12th International Symposium on Spatial Data Handling (SDH) Riedl, Andreas; Kainz, Wolfgang; Elmes, Gregory ( Hrsg. ), Seite 547--562 . Springer , 2006 .

Elements of urban terrain models such as streets, pavements, lawns, walls, and fences are fundamental for effective recognition and convincing ap-pearance of virtual 3D cities and virtual 3D landscapes. These elements complement important other components such as 3D building models and 3D vegetation models. This paper introduces an object-oriented, rule-based and heuristic-based approach for modeling detailed virtual 3D terrains in an automated way. Terrain models are derived from 2D vector-based plans based on generation rules, which can be controlled by attributes assigned to 2D vector elements. The individual parts of the resulting urban terrain models are represented as “first-class” objects. These objects remain linked to the underlying 2D vector-based plan elements and, therefore, preserve data semantics and associated thematic information. With urban terrain models, we can achieve high-quality photorealistic 3D geovirtual environments and support interactive creation and manipulation. The automated construction represents a systematic solution for the bi-directional linkage of 2D plans and 3D geovirtual environments and over-comes cost-intensive CAD-based construction processes. The approach both simplifies the geometric construction of detailed urban terrain models and provides a seamless integration into traditional GIS-based workflows. The resulting 3D geovirtual environments are well suited for a variety of applications including urban and open-space planning, information sys-tems for tourism and marketing, and navigation systems. As a case study, we demonstrate our approach applied to an urban development area of downtown Potsdam, Germany.
Weitere Informationen
Herausgeber Riedl, Andreas; Kainz, Wolfgang; Elmes, Gregory
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