3D Geo-Information Sciences

In recent years 3D geo-information has become an important research area due to the increased complexity of tasks in many geo-scientific applications, such as sustainable urban planning and development, civil engineering, risk and disaster management and environmental monitoring. Moreover, a paradigm of cross-application merging and integrating of 3D data is observed. The problems and challenges facing today's 3D software, generally application-oriented, focus almost exclusively on 3D data transportability issues - the ability to use data originally developed in one modelling/visualisation system in other and vice versa. Tools for elaborated 3D analysis, simulation and prediction are either missing or, when available, dedicated to specific tasks. In order to respond to this increased demand, a new type of system has to be developed. A fully developed 3D geo-information system should be able to manage 3D geometry and topology, to integrate 3D geometry and thematic information, to analyze both spatial and topological relationships, and to present the data in a suitable form. In addition to the simple geometry types like point line and polygon, a large variety of parametric representations, freeform curves and surfaces or sweep shapes have to be supported. Approaches for seamless conversion between 3D raster and 3D vector representations should be available, they should allow analysis of a representation most suitable for a specific application.

Inhalt
Keynotes.- A Virtual Geographic Environment for a Simulation of Air Pollution Dispersion in the Pearl River Delta (PRD) Region.- Representing and Exchanging 3D City Models with CityGML.- Research and Development Program for the Third National Geographic Information System Project in Korea: Korean Land Spatialization Program.- Papers.- Construction Operators for Modelling 3D Objects and Dual Navigation Structures.- A Multilayered Space-Event Model for Navigation in Indoor Spaces.- Towards Defining a Framework for Automatic Generation of Buildings in CityGML Using Building Information Models.- Managed Objects for Infrastructure Data.- Integrating Terrain Surface and Street Network for 3D Routing.- Using a B-Rep Structure to Query 9-Intersection Topological Relationships in 3D GIS Reviewing the Approach and Improving Performance.- Query Processing in 3D Spatial Databases: Experiences with Oracle Spatial 11g.- Making Interoperability Persistent: A 3D Geo Database Based on CityGML.- Use of Finite Arithmetic in 3D Spatial Databases.- Automatic Digital Aerial Image Resection Controlled by LIDAR Data.- Automatic Surface Patch Generation from a Video Image Sequence.- Indoor 3D Modeling and Visualization with a 3D Terrestrial Laser Scanner.- Automatic Image Mosaic-Building Algorithm for Generating Facade Textures.- 3D Continuous K-NN Query for a Landmark-based Wayfinding Location-based Service.- 3D Geo-Network for Agent-based Building Evacuation Simulation.- Hierarchical Modelling of Multi-Geospatial Databases as Basis for Geo-Oriented 3D Analysis Capabilities.- Solar Radiation over the Urban Texture: LIDAR Data and Image Processing Techniques for Environmental Analysis at City Scale.- Creation and Error Analysis of High Resolution DEM Based on Source Data Sets of VariousAccuracy.- A Topological Analysis Method for 3D Geo-Entities Structured as Hexahedron Tessellations.- Constraint-based Generation and Visualization of 3D City Models.- GeoVEs as Tools to Communicate in Urban Projects: Requirements for Functionality and Visualization.- Producing 3D Applications for Urban Planning by Integrating 3D Scanned Building Data with Geo-spatial Data.- 3D Dynamic Simulation and Visualization for GIS-based Infiltration Excess Overland Flow Modelling.