Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/60500
Title: A proposed connectivity-based model for a 3-D cadastre
Authors: Tse, OCR
Gold, C
Keywords: Euler Operators
3D cadastre
Quad-edge
TIN model
Topology
Bridges and holes
Issue Date: 2003
Publisher: Pergamon Press
Source: Computers, environment and urban systems, 2003, v. 27, no. 4, p. 427-445 How to cite?
Journal: Computers, environment and urban systems 
Abstract: This paper proposes a new approach to create a three-dimensional (3D) cadastre using a surface-representation model. It starts by describing a variety of possible approaches, in order of increasing complexity, and then selects one that gives significantly increased flexibility with only slightly increased difficulty in implementation. Techniques from Computer Science (Computational Geometry) and Engineering (Computer Aided Design, or CAD) as well as from Geographical Information System or GIS (TIN—Triangulated Irregular Network modelling) are used. Starting with the Quad-Edge data structure as the basis, a simple implementation is described: this approach is often used for TIN models. We then show a simple subset of CAD-type Euler Operators and describe how they may be implemented with Quad-Edges. A simple TIN model may be built using these Operators. However, the addition of one more Euler Operator permits the creation of bridges and holes in the triangulated surface. This gives sufficient tools for representing complex man-made objects. A three-dimensional cadastral system based on this surface model is proposed. As in a two-dimensional, parcel-based system, property rights are associated with the visible surface, together with “interior” and “exterior” rights corresponding to “above ground” and “below ground” in current systems. This is simple to implement, and flexible enough to be useful.
URI: http://hdl.handle.net/10397/60500
ISSN: 0198-9715
DOI: 10.1016/S0198-9715(02)00041-8
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