By Martin Breunig, Mulhim Al-Doori, Edgar Butwilowski, Paul V. Kuper, Joachim Benner, Karl Heinz Haefele
Nowadays 3D Geoinformation is required for plenty of making plans and research projects. for instance, 3D urban and infrastructure versions are paving the best way for advanced environmental and noise analyzes. 3D geological sub-surface types are wanted for reservoir exploration within the oil-, gas-, and geothermal undefined. hence 3D Geoinformation brings jointly researchers and practitioners from various fields equivalent to the geo-sciences, civil engineering, 3D urban modeling, 3D geological and geophysical modeling, and, final yet now not least, computing device technology. the various demanding situations of 3D Geoinformation technological know-how situation new techniques and the improvement of criteria for above- and under-ground 3D modeling, effective 3D facts administration, visualization and research. eventually, the combination of alternative 3D ways and information versions is noticeable as some of the most vital demanding situations to be solved.
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Additional info for 3D Geoinformation Science: The Selected Papers of the 3D GeoInfo 2014
Butwilowski et al. Fig. 2 Aggregation of solid cells. a Aggregated cell, b Individual 3-d cells, and c 2D triangle net cell boundaries detail in n-d models. g. the division of a cell by a shortest path that respects the meshing of the underlying simplicial complex. The topology module of DB4GeO allows to freely navigate along the simple geometries of a complex geometry mesh. Therefore we developed a class model and directly connected it with the DB4GeO geometry kernel API. In our model, the class CellTuple plays a central role for the whole architecture: the CellTuple class is designed as a composition of cells for each dimension d, 0 d 3 (Fig.
0, OGC doc no. 12-019. Open Geospatial Consortium ICA—International Cartographic Association (1973) Multilingual dictionary of technical terms in cartography. Franz Steiner Verlag, Stuttgart ISO 10303-11:2004 (2004) Industrial automation systems and integration—product data representation and exchange—part 11: description methods: The EXPRESS language reference manual ISO 10303-21:2002 (2002) Industrial automation systems and integration—product data representation and exchange—part 21: implementation methods: clear text encoding of the exchange structure ISO 10303-28:2007 (2007) Industrial automation systems and integration—product data representation and exchange—part 28: implementation methods: XML representations of EXPRESS schemas and data, using XML schemas ISO 16739:2013 (2013) Industry foundation classes (IFC) for data sharing in the construction and facility management industries Generalization of 3D IFC Building Models 35 ISO 19107:2003 (2003) Geographic information—spatial schema Kada M (2002) Automatic generalization of 3D building models.
By a projection of the CityGML RoofSurface on the IFC roof geometries, the overlapping parts are identiﬁed and separated by a geometric subtraction. For the CityGML model, these geometries are currently classiﬁed as BuildingInstallation. Figure 7 shows the steps for extracting roof overhangs. 4 Generation of the LoD3 Model The transformation process from a LoD2 model to a LoD3 model mainly differs in applying voids for doors, windows, and openings and creating the appropriate elements (see Fig.
3D Geoinformation Science: The Selected Papers of the 3D GeoInfo 2014 by Martin Breunig, Mulhim Al-Doori, Edgar Butwilowski, Paul V. Kuper, Joachim Benner, Karl Heinz Haefele