Extending the OGC OpenLS Route Service to 3D for an interoperable realisation of 3D focus maps with landmarks

Authors:
Pascal Neis;Alexander Zipf
Affiliations:
Department of Geography, University of Bonn, Bonn, Germany;Department of Geography, University of Bonn, Bonn, Germany
Venue:
Journal of Location Based Services
Year:
2008

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Abstract

Landmarks and focus maps can play an important role by supporting users in route finding and navigation. This article shows one possible solution for generating focus-based maps with landmarks by only using OGC® web service standards. The aim is to increase technical interoperability of implementation of location-based services or navigation applications. The techniques for choosing specific landmarks and generating the focus maps are shortly presented and their functionality is explained. For this we explain the concepts of both landmarks and focus maps. Also the relevant technologies from 3D spatial data infrastructures, (3D-) symbol encoding (SE) for representing visualisation rules in 2D and 3D and the OGC OpenLS specifications are introduced briefly. The OpenLS core services implemented by ourselves and the first applications of these are discussed. The integration of the landmarks to the route instructions of the OpenLS Route Service happens during the route calculating algorithm without adding extra attributes or new elements to the standardised service interface. The generation of the focus-based maps is realised in similar ways for 2D and 3D using the (extended) SE. In 2D the realisation is based on our implementation of an OpenLS Presentation Service. In 3D our Web3D Service has been extended accordingly. The article ends with an outlook on ideas for future deployment and research.