Mona 3d -- Mobile Navigation Using 3d City Models

Within this paper we present and discuss the goals and first results of a new collaborative project on mobile navigation using 3d city models called MoNa3D. In addition to the author’s institutions (HFT Stuttgart and FH Mainz/University of Bonn) project partners include Navigon, Teleatlas, CPA Geoinformatik, Heidelberg Mobil and Bureau of Surveying Stuttgart. Here we investigate two main challenges for mobile navigation with 3D city models, which include restrictions considerations regarding compression of 3D geometries and smart handling of textures for building facades using new technologies, both resulting from the limited processing power and bandwith of mobile devices on the one hand side and on the other hand side both conceptual design guidelines regarding interoperability through the use of open standards such as the OpenLS (Open Location Services) specifications by the OGC along with setting up a 3D spatial data infrustructure (3D-SDI) based on OGC open web services (OWS), as well as cognitive considerations on how to present route instructions on mobile devices the most efficient way for supporting navigation of pedestrians or car drivers. A special focus lays on evaluation the proper use of 3D landmarks within 2D, 2,5D and 3D scences on mobile devices, as well as aspects such as personalization and context awareness, which are all important issues of emergening ubiquitous GI Services (UbiGIS).