How to quickly detect the overlap and the consistency between LADM with LandInfra and LandXML: Application of schema matching techniques

In this paper, we explore the schema matching techniques to compare the content of three geospatial standards which are LADM, LandInfra (InfraGML) and LandXML. Those standards all refer to the concept of “land” and we will try to quantify the similarity of them based on syntax and semantic comparison of the class names exposed in their...

3D Cadastres Best Practices, Chapter 3: 3D Cadastral Information Modelling

In this chapter we address various aspects of 3D Cadastral Information Modelling. Of course, this is closely related to the legal framework and initial registration as presented in the first two chapters. Cadastral data models, such as the Land Administration Domain Model, which include 3D support, have been developed for legal information...

LandXML encoding of mixed 2d and 3d survey plans with multi-level topology

Cadastral spatial units around the world range from simple 2D parcels to complex 3D collections of spaces, defined at levels of sophistication from textural descriptions to complete, rigorous mathematical descriptions based on measurements and coordinates. The most common spatial unit in a cadastral database is the 2D land parcel-the basic...

Initial Design to Develop a Cadastral System that Supports Digital Cadastre, 3D and Provenance for Singapore

It is challenging to design and develop a cadastral system that supports digital cadastre, 3D and provenance. Digital cadastre encodes cadastral information in digital format like LandXML, which allows for automation and returns high productivity. 3D enables capturing and representing the third dimension, which is critical for the development in...

A Conceptual Model Supporting a Range of 3D Parcel Representations Through all Stages: Data Capture, Transfer and Storage

Semantics-based Fusion for CityGML and 3D LandXML

For any developments that require spatial data, often the fusion of diverse spatial datasets is unavoidable. For instance in developing a 3D cadastral database serving various purposes, data may need to be sourced from different spatial datasets such as: building design models in BIM (Building Information Model) format, topographic and built...

A Conceptual Framework of Representing Semantics for 3D Cadastre in Singapore

The Land Survey Division of Singapore Land Authority (SLA) has recently embarked on LandXML to replace the existing in-house cadastral submission format for cadastral job processing. The rationale of adopting LandXML is to support automated job processing for cadastral job submissions from registered surveyors. LandXML is capable of capturing...

Development of a 3D ePlan/LandXML Visualisation System in Australia

The importance of managing properties and people’s interests in complex multi-level developments is increasing, due to population growth and shortage of land in urban areas. As a result, cadastral systems are under pressure to change the way they capture, register and visualise 3D data of these multi-level scenarios. However, interests in land...