Versioning of 3D City Models for Municipality Applications: Needs, Obstacles and Recommendations

The use of 3D city models is changing from visualization to complex cases where they act as base maps. This requires links registers and continuous updating the models. Still, most never change or are recreated instead updated. study identifies obstacles version management proposes recommendations overcome them, with a main focus on municipality perspective, foremost in planning building processes. As part this study, we investigate whether national can control A case based investigations standards, interviews review tools presented. uses an architectural model divided into four layers: data collection, theme, application. All layers require changes when implementing new versioning method: collection layer restructuring technical solutions work processes, storage register restructuring, capabilities must be propagated layer, at application handle temporal information better. Strong incentives for including essential, substantial investment required implement all layers. Only by applications should implemented, complexity grows number functionalities. One outcome recommendation link more closely registers. enables in, e.g., permits cadastres, authorities fetch (versioning) directly layer.