At the present, we are in the midst of another major societal shift that is leading to a hyper-connected society. In this hyper-connected society, the convergence of mobile technology, online access and global media is connecting masses of people without precedents, with resulting impacts on communication, content creation and social engagement. Online presence and interactive mobile services are, therefore, become a key strategy for entities that seek to increase user engagement and awareness. In this paper, we introduce an interoperable framework for the visualisation and processing of 3D city models on mobile devices. Our solution crystallises on City GML's ability to store and describe 3D city-related geometry along with its semantics, which is fundamental to city level operations like validity checking, automatic integration, thematic queries, and spatial data mining. The streaming of 3D models is transparent to the user, who perceives remote models as locally stored. The user interface is designed for 3D data exploration and analysis on mobile environments, and it is fully compliant with OGC open web standards.
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