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首页> 外文期刊>Computers, Environment and Urban Systems >A proposed connectivity-based model for a 3-D cadastre
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A proposed connectivity-based model for a 3-D cadastre

机译：一种针对3D地籍的基于连通性的建议模型

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摘要

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.
机译：本文提出了一种使用表面表示模型创建三维（3D）地籍的新方法。首先从描述各种可能的方法开始，以增加复杂度的顺序，然后选择一种方法，该方法可显着提高灵活性，而实施难度仅会稍微增加。使用了来自计算机科学（计算几何）和工程（计算机辅助设计或CAD）以及地理信息系统或GIS（TIN-不规则三角网建模）的技术。从以Quad-Edge数据结构为基础开始，描述了一种简单的实现方式：该方法通常用于TIN模型。然后，我们显示一个简单的CAD型Euler运算符子集，并描述如何使用Quad-Edges实现它们。使用这些运算符可以构建一个简单的TIN模型。但是，再增加一个Euler算子可以在三角曲面中创建桥和孔。这提供了足够的工具来表示复杂的人造对象。提出了基于该表面模型的三维地籍系统。就像在基于包裹的二维系统中一样，财产权与可见表面相关联，同时还有与当前系统中“地上”和“地下”相对应的“内部”和“外部”权利。这很容易实现，并且足够灵活以至有用。

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