A conceptual framework of representing semantics for 3D cadastre in Singapore
Soon, Kean Huat
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 surveying data, such as traverses, parcels, and geometries; however, it falls short when representing the semantics of what is captured for automated job processing. This paper discusses a conceptual framework on how to support the semantic representation for LandXML using ontology in 3D cadastres. Ontology is not novel in the geospatial domain. It has been proven useful in many applications. Ontology is used to explicitly describe semantics by using a formal language, Web Ontology Language (OWL). OWL is a World Wide Web Consortium standard and a variant of XML (eXtensible Markup Language), but different from a standard XML, OWL is enriched with axioms for semantic definitions to build ontology. By interpreting the knowledge in the ontology, a system is able to perform certain operations automatically.
Event: Third International FIG Workshop on 3D Cadastres : Developments and Practices
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