Webbasierte Exploration von großen 3D-Stadtmodellen mit dem 3DCityDB Webclient

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Gregor Weiss
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1 Webbasierte Exploration von großen 3D-Stadtmodellen mit dem 3DCityDB Webclient Zhihang Yao, Kanishk Chaturvedi, Thomas H. Kolbe Lehrstuhl für Geoinformatik 11/14/2015 Webbasierte Exploration von großen 3D-Stadtmodellen mit dem 3DCityDB Webclient 1

Kolbe Lehrstuhl für Geoinformatik www.gis.bgu.tum.

Prospects of Semantic 3D City Models Computer analysis and simulations on the basis of virtual 3D city models Require meaningful objects with spatial and thematic properties Semantic 3D City Models

2 Prospects of Semantic 3D City Models Computer analysis and simulations on the basis of virtual 3D city models Require meaningful objects with spatial and thematic properties Semantic 3D City Models Relevant objects of the urban space are classified and their spatial and thematic properties will be described Meanings & functions of the objects are considered Are key for Urban Information Modelling CityGML (OGC international standard since 2008) Data model (UML) + Exchange format (based on GML3) Different thematic areas + Levels of Detail concept (LOD0 - LOD4) 3D geometry, 3D topology, semantics, and appearance 11/14/2015 Webbasierte Exploration von großen 3D-Stadtmodellen mit dem 3DCityDB Webclient 2

considered Are key for Urban Information Modelling CityGML (OGC international standard since 2008) Data model (UML) + Exchange format (based on GML3) Different thematic areas +

3 Example: CityGML Building Module Oh, how to use it. 11/14/2015 Webbasierte Exploration von großen 3D-Stadtmodellen mit dem 3DCityDB Webclient 3

Information Backbone & Simulation Integration Application Level End Users Lehrstuhl für Geoinformatik Multi-level System Architecture Housing Company Energy Planner Urban Planner App 1: Decision

4 Information Backbone & Simulation Integration Application Level End Users Lehrstuhl für Geoinformatik Multi-level System Architecture Housing Company Energy Planner Urban Planner App 1: Decision support for investment in renovation App 2: Reporting of renewable energy production possibilities App 3: Decision support for urban Planning Calculation Engine GUI Extract from central Database GUI Extract from central Database Calculation Engine GUI Extract from central Database Calculation Engine many more Apps 3D City Model + ADEs Common Urban Information Model Noise Propagation Simulation Urban Analytics Toolkit Energy Demand Calculation Flooding Simulation many more modules 11/14/2015 Webbasierte Exploration von großen 3D-Stadtmodellen mit dem 3DCityDB Webclient 4

central Database GUI Extract from central Database Calculation Engine GUI Extract from central Database Calculation Engine many more Apps 3D City Model + ADEs Common Urban Information Model

5 Exploration of CityGML models using Cesium logical link Visualization model in the Web Online Spreadsheet in Cloud-Service Export e.g. KML/ gltf Integrated Web Application (3D Visualization based on Cesium) Semantic 3D City Model 3DCityDB WebClient 11/14/2015 Webbasierte Exploration von großen 3D-Stadtmodellen mit dem 3DCityDB Webclient 5

KML/ gltf Integrated Web Application (3D Visualization based on Cesium) Semantic 3D

6 Implementation 3D Web Client User Interface + ExtJS Framework Project management Analysis Tools Interactive Data exploration Geocoding Object handling e.g. Highlighting Interactive visualization e.g. pan, zoom, rotation, tilt Google Data APIs & Google Client APIs Cesium Virtual Globe Engine Query/Insert/ Update JSON Object Http Request KML/glTF Http Request Terrain files WMS GetMap Request Image Spreadsheet / Fusion Table pre-styled 3D models in the form of tiled KML/glTF files Terrain files OGC WMS Server Google Docs Service Web File Service Web File Service Spatial Database Cloud Cloud 11/14/2015 Webbasierte Exploration von großen 3D-Stadtmodellen mit dem 3DCityDB Webclient 6

files WMS GetMap Request Image Spreadsheet / Fusion Table pre-styled 3D models in the form of tiled KML/glTF files Terrain files OGC WMS Server Google Docs Service Web

7 User Interface of the 3D Web Client Menubar Attribute List Layer Tree Map Manager 3D Viewer Object Controller 11/14/2015 Webbasierte Exploration von großen 3D-Stadtmodellen mit dem 3DCityDB Webclient 7

8 Demonstration Textured 3D buildings of Rotterdam 11/14/2015 Webbasierte Exploration von großen 3D-Stadtmodellen mit dem 3DCityDB Webclient 8

9 3D Webclient is more than just visualization! 11/14/2015 Webbasierte Exploration von großen 3D-Stadtmodellen mit dem 3DCityDB Webclient 9

10 Conclusion of the 3D Web Client Concepts and Solutions Extends the Cesium Virtual Globe to support efficient displaying, Caching, dynamic loading and unloading of large pre-styled 3D models in the form of tiled KML datasets exported from a CityGML compliant geodatabase system like the Open Source 3DCityDB Main features of the 3D web client Intuitive user interface for interactive 3D exploration and manipulation of complex-structured semantic 3D city models Collaborative data manipulation and dynamic analyses by means of a Cloud Service like Google Spreadsheets Platform for the creation of apps for various application fields, e.g. energy planning, facility management, etc. 11/14/2015 Webbasierte Exploration von großen 3D-Stadtmodellen mit dem 3DCityDB Webclient 10

exploration and manipulation of complex-structured semantic 3D city models Collaborative data manipulation and dynamic analyses by means of a Cloud Service like Google Spreadsheets Platform for

11 Useful Links CityGML ( ) 3DCityDB ( GitHub Repository ( 11/14/2015 Webbasierte Exploration von großen 3D-Stadtmodellen mit dem 3DCityDB Webclient 11

org/) GitHub Repository (https://github.

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