REVISITING THE CONCEPT OF LEVEL OF DETAIL IN 3D CITY MODELLING
- 1Delft University of Technology, GIS technology group, Delft, the Netherlands
- 2Center for Spatial Information Science and Sustainable Development, Tongji University, Shanghai, P.R. China
- 3Kadaster, Product and Process Innovation, Apeldoorn, the Netherlands
- 4Geonovum, Amersfoort, the Netherlands
Keywords: Level of Detail, Scale, 3D City Modelling
Abstract. This review paper discusses the concept of level of detail in 3D city modelling, and is a first step towards a foundation for a standardised definition. As an introduction, a few level of detail specifications, outlooks and approaches are given from the industry. The paper analyses the general uncertainties and shortcomings around the concept of level of detail in 3D city modelling such as ordinality and inconsistencies, and identifies factors that constitute a specific level of detail. The paper proposes a framework for a new consistent LoD definition which would consolidate present and future LoD paradigms, gives an example of an LoD specification, discusses open questions such as the contexts for which 3D city models are used in practice, and gives prospects for a future quantification and sorting of levels of detail.