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首页> 外文会议>ISPRS (International Society for Photogrammetry and Remote Sensing) Workshop on Spatial Analysis and Decision Making; Dec 3-5, 2003; Hong Kong, China >Creating and analysing a constrained TIN in a geo-DBMS: integration of point heights and parcel boundaries
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Creating and analysing a constrained TIN in a geo-DBMS: integration of point heights and parcel boundaries

机译：在geo-DBMS中创建和分析约束TIN：点高和地块边界的集成

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摘要

In a study concerning 3-D cadastre (Stoter et al., 2002) a prototype has been built that provides insight on the vertical dimension of rights registered in the cadastral registration system. This is important when different properties are located above each other (such as tunnels, pipelines and building complexes). In the prototype, parcel boundaries need to be located in 3-D space as they have to be combined with 3-D objects such as tunnels and pipelines. To extend the spatial model of parcel boundaries into 3-D, simply assigning one z-coordinate to each parcel is not sufficient. Providing a z-coordinate to the vertices describing parcel boundaries also does not meet the requirements for a 3-D cadastre. In this paper we elaborate on how parcel boundaries can be integrated with point heights to meet the requirements for a 3-D cadastre; i.e., obtaining a height surface for parcels. A height surface for parcels is the digital terrain model (DTM) on the locations of parcels. A parcel surface changes when the terrain surface changes. We will describe and evaluate several possibilities for obtaining a height surface for parcels based on a DBMS approach.
机译：在有关3-D地籍的研究中（Stoter等，2002），已经建立了一个原型，该原型可提供对在地籍注册系统中注册的权利的垂直维度的洞察力。当不同的属性位于彼此之上时（例如隧道，管道和建筑群），这一点很重要。在原型中，宗地边界必须位于3-D空间中，因为它们必须与3-D对象（例如隧道和管道）结合在一起。要将宗地边界的空间模型扩展为3-D，仅给每个宗地分配一个z坐标是不够的。为描述宗地边界的顶点提供z坐标也不能满足3D地籍的要求。在本文中，我们详细说明了如何将地块边界与点高集成在一起，以满足3D地籍的要求。即获取包裹的高度表面。包裹的高度表面是包裹位置上的数字地形模型（DTM）。地形表面发生变化时，宗地表面也会发生变化。我们将描述和评估基于DBMS方法获得包裹高度表面的几种可能性。

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