Universiti Teknologi Malaysia Institutional Repository

The development of multi-scale data management for CityGML-based 3D buildings

Karim, Hairi and Abdul Rahman, Alias and Azri, Suhaibah and Halim, Zurairah (2022) The development of multi-scale data management for CityGML-based 3D buildings. Geomatics and Environmental Engineering, 16 (1). pp. 71-94. ISSN 1898-1135


Official URL: http://dx.doi.org/10.7494/geom.2022.16.1.71


The CityGML model is now the norm for smart city or digital twin city development for better planning, management, risk-related modelling and other ap-plications. CityGML comes with five levels of detail (LoD), mainly constructed from point cloud measurements and images of several systems, resulting in a va-riety of accuracies and detailed models. The LoDs, also known as pre-defined multi-scale models, require large storage-memory-graphic consumption com-pared to single scale models. Furthermore, these multi-scales have redundancy in geometries, attributes, are costly in terms of time and workload in updating tasks, and are difficult to view in a single viewer. It is essential for data owners to engage with a suitable multi-scale spatial management solution in mini-mizes the drawbacks of the current implementation. The proper construction, control and management of multi-scale models are needed to encourage and expedite data sharing among data owners, agencies, stakeholders and public users for efficient information retrieval and analyses. This paper discusses the construction of the CityGML model with different LoDs using several datasets. A scale unique ID is introduced to connect all respective LoDs for cross-LoD information queries within a single viewer. The paper also highlights the bene-fits of intermediate outputs and limitations of the proposed solution, as well as suggestions for the future.

Item Type:Article
Uncontrolled Keywords:CityGML, Cross-scale que-ry, Level of Details (LoD), Multi-scale, Scale unique ID, Spatial scale data management
Subjects:T Technology > TH Building construction
Divisions:Built Environment
ID Code:100276
Deposited By: Widya Wahid
Deposited On:29 Mar 2023 07:19
Last Modified:29 Mar 2023 07:19

Repository Staff Only: item control page