Web 3D Service & CityGML Update

Transcription

1 Technische Universität Berlin Web 3D Service & CityGML Update Thomas H. Kolbe Institute for Geodesy and Geoinformation Science Berlin University of Technology 2nd of November, 2007 X3D Earth / OGC 3DIM meeting at Schlumberger, Boston

2 Overview Introduction Web 3D Service CityGML Application Domain Extensions to CityGML CityGML Application examples 2 T. H. Kolbe Web 3D Service & CityGML Update

3 Integration of Geospatial Information Zonal Fragmentation A B Application Model C C C B B Application Model Layer Fragmentation User Provider Internet / Intranet Authority A (DTM) City A City B Company C Regional Model Level-of-Detail 0 City Model Level-of-Detail 1-3 City Model Level-of-Detail 1-3 City Model Level-of-Detail T. H. Kolbe Web 3D Service & CityGML Update

4 Different Stages of Information Integration System A Web Client C System B graphical Elements Geodata VRML / X3D / KML Visualization level OGC Web 3D Service, WTS CityGML Geodata level OGC Web Feature Service graphical Elements Geodata 4 T. H. Kolbe Web 3D Service & CityGML Update

5 OGC Web 3D Service (W3DS) 5 T. H. Kolbe Web 3D Service & CityGML Update

6 Distributed geo-visualization (I) JPEG, TIFF, GIF,... SVG, VRML, X3D,... ISO 19107, GML3 Geodata(base) From: Doyle & Cuthbert: Essential model of portrayal, OGC Document T. H. Kolbe Web 3D Service & CityGML Update

7 Distributed geo-visualization (I) JPEG, TIFF, GIF,... Application program (Thick Client) SVG, VRML, X3D,... ISO 19107, GML3 Geodata(base) WFS WCS From: Doyle & Cuthbert: Essential model of portrayal, OGC Document T. H. Kolbe Web 3D Service & CityGML Update

8 Distributed geo-visualization (II) Webbrowser JPEG, TIFF, GIF,... WTS 1 SVG, VRML, X3D,... ISO 19107, GML3 Generally not possible for 3D scenes 2D WTS 2 2D 3D 2D 3D Geodata WFS WCS From: Doyle & Cuthbert: Essential model of portrayal, OGC Document T. H. Kolbe Web 3D Service & CityGML Update

9 Distributed geo-visualization (III) with W3DS X3D Viewer W3DS 1 W3DS 2 Quelle: Doyle & Cuthbert, OGC Document T. H. Kolbe Web 3D Service & CityGML Update

10 Filling the gap at medium clients WFS W3DS WTS 10 T. H. Kolbe Web 3D Service & CityGML Update

11 OGC Portrayal Services Specific OGC Web Services for 3D visualization: Web Terrain Service WTS (now: Web Perspective View Service) Web 3D Service W3DS Benefits of OGC conforming portrayal services Standard interface between clients and servers Components / implementations are replaceable Easy integration of visualization fct. in any (geo) application Can be combined with other OGC Web Services: Catalog Services (Web Catalog Service WCAS) Authorization & Access Control Services ( AAA-Services ) ecommerce Services(Web Pricing & Ordering Service WPOS 11 T. H. Kolbe Web 3D Service & CityGML Update

12 WTS Integration Web Terrain Service 2D & 2,5D User 2D WTS 3D Webbrowser 2D Web Coverage S. Web Feature Serv. Web Map Service DTM, Orthoph. Buildings Maps 12 T. H. Kolbe Web 3D Service & CityGML Update

13 Web 3D Service (W3DS) Full 3D portrayal service based on the Web Terrain Service, but not focused on terrain delivers 3D display elements (VRML97; X3D; KML; U3D etc.) generates 3D scenes with predefined initial viewpoint Parameters: Bounding box Viewing direction: target point distance pitch, yaw, and roll angle Object Layers resp. Feature Sets Date and time Light conditions Background image and atmosphere OGC Discussion Paper OGC [2005] 13 T. H. Kolbe Web 3D Service & CityGML Update

14 Axis transformation is implicitly included: Real World => Computer graphics z y y -z X X Y -Z Z Y x x 14 T. H. Kolbe Web 3D Service & CityGML Update

15 OGC Web 3D Service User 3D VRML / X3D viewer or GoogleEarth Web 3D Service: Generation and client-side integration of 3D graphical objects (scene graphs), e.g. VRML, X3D, and GoogleEarth s KML W3DS W3DS DTM Buildings 15 T. H. Kolbe Web 3D Service & CityGML Update

16 GetScene request using http GET SERVICE=W3DS& VERSION=0.1.0& REQUEST=GetScene& SRS=EPSG:31466& FORMAT=model/vrml& BBOX= , , , & LAYERS=DGM,GEBAEUDE,MOEBEL gives 16 T. H. Kolbe Web 3D Service & CityGML Update

17 Mini web client for W3DS wmc.ikg.uni-bonn.de/w3ds simple web client (needs VRML plugin) for the evaluation of realized services URLs of currently accessible servers are predefined parameter entry in a HTML form 17 T. H. Kolbe Web 3D Service & CityGML Update

18 Transient Integration of 3D Models Important reasons for the success of the (2D) WMS: Combined visualization of basis and thematic spatial information by simple overlay of map images within browser Ad hoc integration of 3D models in web browser? transient; no previous local download Realization using VRML/X3D inlining & Javascript: #VRML V2.0 utf8 Transform{children[Inline{url }]} Transform{children[Inline{url }]} 18 T. H. Kolbe Web 3D Service & CityGML Update

19 Transient clientside Scene Integration Integrated view from 3 different W3DS requests in VRML plugin 1. Buildings 2. Road furniture 3. Terrain 19 T. H. Kolbe Web 3D Service & CityGML Update

20 Integration of existing systems Web / X3D browser Application programs W3DS client components 3D visualization environment from manufacturer X W3DS client adapter Client Server VRML / X3D W3DS adapter GIS from manufacturer A W3DS adapter GIS from manufacturer B W3DS adapter CAD system from manufacturer C 20 T. H. Kolbe Web 3D Service & CityGML Update

21 W3DS Client for Simulators Usage of the W3DS in a 3D application: Interfacing with the Simulator Application COSIMIR of the Institute for Robotics, Univ. Dortmund Foto: W. Herzberg Scenario: Fire fighting 21 T. H. Kolbe Web 3D Service & CityGML Update

22 Summary Web 3D Service provides an easy way to integrate 3D visualizations from different sources Combines with OGC catalog service, DRM stuff etc. no semantic information for the 3D data needed is independent from CityGML CityGML is an Urban Information Model (Ontology; based on ISO 191xx) and exchange format for virtual 3D city and regional models (realised as GML3 Application Schema) Rich information source for deriving 3D visualizations 22 T. H. Kolbe Web 3D Service & CityGML Update