Towards the Semantic Enrichment of Existing Online 3D Building Geometry to Publish Linked Building Data

Currently, existing online 3D databases each have their own structure according to their own needs. Additionally, the majority of online content only has limited semantics. With the advent of Semantic Web technologies, the opportunity arises to semantically enrich the information in these databases and make it widely accessible and queryable. The goal is to investigate whether online 3D content from different repositories can be processed by a single algorithm to produce the desired semantics. The emphasis of this work is on extracting building components from generic 3D building geometry and publish it as Linked Building Data. An interpretation framework is proposed that takes as input any building mesh and outputs its components. More specifically, we use pretrained Support Vector Machines to classify the separate meshes derived from each 3D model. As a preliminary test case, realistic examples from several repositories are processed. The test results depict that, even though the building content originates from different sources and was not modeled according to any standards, it can be processed by a single machine learning application. As a result, building geometry in online repositories can be semantically enriched with component information according to classes from Linked Data ontologies such as BOT and PRODUCT. This is an important step towards making the implicit content of geometric models queryable and linkable over the Web.

ISBN:9783030213947

Jaar van publicatie:2019

Toegankelijkheid:Closed