TOOLS AND WORKFLOW FOR THE RAPID ACQUISITION OF 3-D CITY MODELS

In this paper, we describe how a virtual 3-D city model can be build from a number of data sources. After an introduction into data acquisition, we describe in detail a selection of tools which can be used to model a wide range of objects from aerial as well as terrestrial sources. Having employed a number of those tools in a project where we modelled parts of Hannover, we comment on their strengths and weaknesses. We also show the overall workflow used to finally produce a video animation of the virtual city model