University of Twente Student Theses
Assessment of mobile laser scanning data in 3D cadastre
Hao, Minghui (2011) Assessment of mobile laser scanning data in 3D cadastre.
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| Abstract: | growing population and the consumption of land have caused an increasing pressure of land use especially in the commercial and residential districts of the urban area. The limited land resources drive the government and people to exploit the space that above and below the earth surface, and have caused the 3D property situation such as the overlapping building complex, interlocking constructions and the underground facilities. This tendency dramatically changes the relation between human and land, leading to a growing importance of land ownership. Moreover, it extends the cadastre task from the 2D land parcel to the 3D space. To be able to register and represent the overlapping objects existing on the 2D parcel, the 3D cadastre which aims to “register and give insight into the right and restriction on 3D property units”(Stoter and Oosterom, 2006) becomes to be a necessity. From the cadastre registration perspective, the term 3D property refers to the bounded amount of legal space which is required by physical objects. Therefore, for each property unit, how reconstruct the physical object and then to represent the “legal space unit” correctly is the premise of a precise 3D registration. Along with the rapid development of the 3D data acquisition and reconstruction techniques, now it is possible to model the building objects with detailed geometric information into a 3D form. In this research, the Mobile Laser Scanning (MLS) data and the processed building facade maps are implemented for the building objects reconstruction. The suitability of applying the MLS products in 3D cadastre for physical building and apartment units modelling is assessed. Besides exploring the 3D objet acquisition and modelling, this research also discusses the concept of “legal space registration & physical structure representation”. An external PhysicalBuilding package which aims to integrate the physical building data and model into 3D cadastre data set for legal space registration has been developed in this study. This package has been designed to be used as an extension of the LADM. Within this PhysicalBuilding package, the classes which describe the building unit by using different forms of geometric primitives are designed. Secondary data of a study area in Istanbul were collected including: scientific articles, project reports; MLS data, facade maps, building construction plans, cadastral maps and the DEM data. Within the procedure of the physical building modelling by using the MLS data, the building units that cadastre interests including the whole building objects, the storeys and the apartment units were reconstructed. The experimental results show that the applicability of introducing the MLS data for 3D a physical building model in the extended LADM cadastre dataset. Currently, the data collection and maintenance of a physical model is not always the cadastre task, these data are organized in the other datasets in relevant organizations. In this research, the physical building models and the generated geometric information are maintained in the proposed PhyscialBuilding Package separately; they can be further accessed, processed or integrated in cadastral data set. Keywords: 3D Cadastre; Mobile Laser Scanning (MLS) data; facade map; LADM; legal space; physical structure. |
| Item Type: | Essay (Master) |
| Faculty: | ITC: Faculty of Geo-information Science and Earth Observation |
| Programme: | Geoinformation Science and Earth Observation MSc (75014) |
| Link to this item: | https://purl.utwente.nl/essays/93173 |
| Export this item as: | BibTeX EndNote HTML Citation Reference Manager |
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