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A ubiquitous knowledgeable data representation model (UKRM) for three-dimensional geographic information systems (3D GIS)

机译:用于三维地理信息系统(3D GIs)的无处不在的知识型数据表示模型(UKRm)

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摘要

In the face of complicated, diversified three-dimensional world, the existing 3D GIS data models suffer from certain issues such as data incompatibility, insufficiency in data representation and representation types, among others. It is often hard to meet the requirements of multiple application purposes (users) related to GIS spatial data management and data query and analysis, especially in the case of massive spatial objects. In this study, according to the habits of human thinking and recognition, discrete expressions (such as discrete curved surface (DCS), and discrete body (DB)) were integrated and two novel representation types (including function structure and mapping structure) were put forward. A flexible and extensible ubiquitous knowledgeable data representation model (UKRM) was then constructed, in which structurally heterogeneous multiple expressions (including boundary representation (B-rep), constructive solid geometry (CSG), functional/parameter representation, etc.) were normalized. GIS's ability in representing the massive, complicated and diversified 3D world was thus greatly enhanced. In addition, data reuse was realized, and the bridge linking static GIS to dynamic GIS was built up. Primary experimental results illustrated that UKRM was overwhelmingly superior to the current data models (e.g. IFC, CityGML) in describing both regular and irregular spatial objects.
机译:面对复杂,多样化的三维世界,现有的3D GIS数据模型存在某些问题,例如数据不兼容,数据表示和表示类型不足等。通常很难满足与GIS空间数据管理以及数据查询和分析相关的多种应用目的(用户)的要求,尤其是在大型空间对象的情况下。在这项研究中,根据人类思维和认知的习惯,将离散表达式(例如离散曲面(DCS)和离散主体(DB))进行了整合,并提出了两种新颖的表示类型(包括功能结构和映射结构)向前。然后构建了一个灵活且可扩展的普遍知识数据表示模型(UKRM),在该模型中,结构上异质的多个表达式(包括边界表示(B-rep),构造实体几何(CSG),功能/参数表示等)被标准化。从而大大增强了GIS代表庞大,复杂和多样化的3D世界的能力。此外,实现了数据重用,并建立了将静态GIS与动态GIS链接的桥梁。初步的实验结果表明,UKRM在描述规则和不规则空间物体方面均优于当前数据模型(例如IFC,CityGML)。

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