Prof. Efi Dimopoulou Profile

Prof. Efi Dimopoulou

at National Technical Univ of Athens

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Author

Publications (3)

Proceedings Article | 12 August 2016 Paper

Investigating the capabilities of semantic enrichment of 3D CityEngine data

Dimitra Solou, Efi Dimopoulou

Proceedings Volume 9688, 968802 (2016) https://doi.org/10.1117/12.2240736

KEYWORDS: 3D modeling, Data modeling, Systems modeling, Visual process modeling, Geographic information systems, Process modeling, Visualization, 3D acquisition, 3D imaging standards, Databases

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Proceedings Article | 19 June 2015 Paper

Investigating correlation between legal and physical property: possibilities and constraints

E. Dimopoulou, D. Kitsakis, E. Tsiliakou

Proceedings Volume 9535, 95350A (2015) https://doi.org/10.1117/12.2192572

KEYWORDS: 3D modeling, Legal, Buildings, Data modeling, Systems modeling, Visualization, 3D optical data storage, Visual process modeling, Solids, Information fusion

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Contemporary urban environment is characterized by complexity and mixed use of space, in which overlapping land parcels and different RRRs (Rights, Restrictions and Responsibilities) are frequent phenomena. Internationally, real property legislation either focuses on surface property or has introduced individual 3D real property units. The former approach merely accommodates issues related to subdivision, expropriation and transactions on part of the real property above or below surface, while the latter provides for defining and registering 3D real property units. National laws require two-dimensional real property descriptions and only a limited number of jurisdictions provide for threedimensional data presentation and recording. International awareness on 3D Cadastre may be apparent through the proposals for transition of existing cadastral systems to 3D along with legal amendments improving national 3D Cadastre legislation. Concurrently the use of appropriate data sources and the correct depiction of 3D property units’ boundaries and spatial relationships need to be addressed. Spatial relations and constraints amongst real world objects could be modeled geometrically and topologically utilizing numerous modeling tools, e.g. CityGML, BIM and further sophisticated 3D software or by adapting international standards, e.g. LADM. A direct correlation between legal and physical property should be based on consistent geometry between physical and legal space, improving the accuracy that legal spaces’ volumes or locations are defined. To address these issues, this paper investigates correlation possibilities and constraints between legal and physical space of typical 3D property cases. These cases comprise buildings or their interior spaces with mixed use, as well as complex structures described by explicit facade patterns, generated by procedural or by BIM ready 3D models. The 3D models presented are evaluated, regarding compliancy to physical or legal reality.

Proceedings Article | 12 August 2014 Paper

Investigation on the contribution of LiDAR data in 3D cadastre

Olga Giannaka, Efi Dimopoulou, Andreas Georgopoulos

Proceedings Volume 9229, 922905 (2014) https://doi.org/10.1117/12.2066151

KEYWORDS: LIDAR, 3D modeling, Buildings, Data modeling, Orthophoto maps, Clouds, Visualization, Data acquisition, Vegetation, Raster graphics

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