ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., I-2, 93-98, 2012
https://doi.org/10.5194/isprsannals-I-2-93-2012
© Author(s) 2012. This work is distributed under
the Creative Commons Attribution 3.0 License.
 
13 Jul 2012
CAD CONSTRUCTION METHOD OF 3D BUILDING MODELS FOR GIS ANALYSIS
P. Boguslawski, C. M. Gold, and A. A. Rahman Faculty of Geoinformation and Real Estate, Universiti Teknologi, 81310 UTM Johor Bahru, Johor, Malaysia
Keywords: 3D modelling, data structures, GIS, CAD, building management Abstract. Buildings are often modelled as two-dimensional (2D) footprints which are extruded to simple cubes. Buildings are also represented as more complex objects with roofs, facades, etc. – in this case they are polyhedra, sometimes of a complex shape. These allow for visualisation and analysis of a wide area like a city, but micro-scale analysis of interiors is not possible. An example can be rescue operation simulation where information about the internal structure of a building and the external terrain is crucial to improve the response time. It demands a three-dimensional (3D) model where each room is represented as a separate element; there are also doors, windows, walls and other objects that have to be included. Even complex geometrical models can be easily constructed using Computer-Aided Design (CAD) systems. However, lack of semantic information and topological relations makes such models poor choices for GIS analysis. With the new dual half-edge (DHE) data structure and a set of Euler operators a 3D model can be built as in CAD systems, and represented as a cell complex. Construction of non-manifold objects is also possible. An advantage of the DHE is simplicity – only edges and nodes are used. Because of the 3D duality implemented in the structure volumes (cells) and faces are also present in the model. The geometry of a model is constructed explicitly by using Euler operators: connections between elements are created automatically, and semantic information is represented with attributes which can be assigned to any element of the model.
Conference paper (PDF, 4319 KB)


Citation: P. Boguslawski, C. M. Gold, and A. A. Rahman: CAD CONSTRUCTION METHOD OF 3D BUILDING MODELS FOR GIS ANALYSIS, ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., I-2, 93-98, https://doi.org/10.5194/isprsannals-I-2-93-2012, 2012.

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