Simulating Large-Scale 3D Cadastral Dataset Using Procedural Modelling

Jernej Tekavec,Eugénio Rodrigues,Anka Lisec

doi:10.3390/ijgi9100598

Abstract

Geospatial data and information within contemporary land administration systems are fundamental to manage the territory adequately. 3D land administration systems, often addressed as 3D cadastre, promise several benefits, particularly in managing today’s complex built environment, but these are currently still non-existent in their full capacity. The development of any complex information and administration system, such as a land administration system, is time-consuming and costly, particularly during the phase of evaluation and testing. In this regard, the process of implementing such systems may benefit from using synthetic data. In this study, the method for simulating the 3D cadastral dataset is presented and discussed. The dataset is generated using a procedural modelling method, referenced to real cadastral data for the Slovenian territory and stored in a spatial database management system (DBMS) that supports storage of 3D spatial data. Spatial queries, related to 3D cadastral data management, are used to evaluate the database performance and storage characteristics, and 3D visualisation options. The results of the study show that the method is feasible for the simulation of large-scale 3D cadastral datasets. Using the developed spatial queries and their performance analysis, we demonstrate the importance of the simulated dataset for developing efficient 3D cadastral data management processes.

Highlights

As the built environment is increasingly becoming spatially complex, land administration systems are challenged by an unprecedented demand to support decisions in utilising space above and below the earth’s surface [1]
The authors conclude that none of the discussed models, including the conceptual model provided within the international standard ISO 19152:2012 on the Land Administration Domain Model (LADM) [23], fully supports 3D data modelling
The proposed method for simulating the 3D cadastral dataset was successfully applied for the case of Slovenia, proving that it can be efficiently applied to large areas

Summary

Introduction

As the built environment is increasingly becoming spatially complex, land administration systems (e.g., cadastral systems) are challenged by an unprecedented demand to support decisions in utilising space above and below the earth’s surface [1]. The authors discuss Open Geospatial Consortium standards, namely CityGML [25], IndoorGML [26], and LandInfra [27], and their integration with LADM, together with the 3D cadastral data model (3DCDM), which was designed to support both 3D legal objects and their physical counterparts [28]. The authors emphasise that some jurisdictions already support some aspects of 3D cadastre, but this is mainly a part of pilot projects and prototypes (see [29,30,31]). This means that no real large-scale 3D cadastral datasets are available, except for some individual cases that were the subject of existing studies

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Discussion

Conclusion