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Interactive Access and Visualization of 3D Geographic Information in the World Wide Web
Interactive Access and Visualization of 3D Geographic Information in the World Wide Web
Volker Coors
13-Dec-97
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Table of Contents
Interactive Access and Visualization of 3D Geographic Information in the World Wide Web
Introduction and Overview
Why using the WWW as a 3D-GIS front end ?
Problems and Requirements
State of the Art
Author: Christine Giger
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Interactive Access and Visualization of 3D Geographic Information in the World Wide Web
PPT Slide
PPT Slide
System Architecture of GOOVI-3D
Data Transfer
Interactive Data Query
Summary
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Interactive Access and Visualization of 3D Geographic Information in the World Wide Web
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Interactive Access and Visualization of 3D Geographic Information in the World Wide Web
Slide 1 of 11
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Introduction and Overview
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Introduction and Overview
Slide 2 of 11
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Why using the WWW as a 3D-GIS front end ?
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Why using the WWW as a 3D-GIS front end ?
Slide 3 of 11
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Problems and Requirements
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Problems and Requirements
Slide 4 of 11
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State of the Art
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State of the Art
Slide 5 of 11
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PPT Slide
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PPT Slide
Slide 6 of 11
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PPT Slide
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PPT Slide
Slide 7 of 11
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System Architecture of GOOVI-3D
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System Architecture of GOOVI-3D
Slide 8 of 11
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Data Transfer
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Data Transfer
Slide 9 of 11
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Interactive Data Query
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Interactive Data Query
Slide 10 of 11
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Summary
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Summary
Slide 11 of 11
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Summary
Summary
GOOVI-3D, a prototype 3D-GIS front-end using WWW
❍ 3D visualization using VRML ❍ interactive data access
fundamental things in GIS context missing in VRML
❍ lack of object management ❍ no database access
extend VRML to geographical purpose
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Interactive Data Query
Interactive Data Query
Two kind of queries
1) What is ...?
❍ selecting an object ❍ obtaining additional information about that object
2) Where is ... ?
❍ search objects which meet specific conditions ❍ highlight the resulting objects
SQL interface in VRML
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Interactive Data Query
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Data Transfer
Data Transfer geometry
topology
views
thematic data
1
3
4
...
no object identification in VRML
extend protocol for object management:
objectid toplogical class VRML-description of view
Geo-Object file:///D|/website%20Hack%20itc/esf/esf_1997/presenta/coors/tsld009.html (1 of 2) [11-Nov-05 04:28:09]
Data Transfer
Server &Client
2
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System Architecture of GOOVI-3D
System Architecture of GOOVI-3DGeo-Objects
3D GIS
Server
WWW Server
CORBA / IDL Interface
GOOVI-3D in
WWW-Browser
GOOVI-3D in
WWW-Browser
IIOP
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System Architecture of GOOVI-3D
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PPT Slide
PPT SlideState of the Art
static scene ❍ presenting a 3D scene with no further interaction
offline generation ❍ using CGI to get a user specific static 3D scene
3D-retrieval-interface ❍ 3D scene with hyperlinks to other predefined pages
none of these systems can be called interactive GIS front end
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PPT Slide
PPT SlideVRML Topographic Map Generator http://evlweb.eecs.uic.edu/pape/vrml/etopo
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State of the Art
State of the Art
static scene
❍ presenting a 3D scene with no further interaction
offline generation
❍ using CGI to get a user specific static 3D scene
Previous slide Next slide Back to first slide View graphic version
file:///D|/website%20Hack%20itc/esf/esf_1997/presenta/coors/tsld005.html [11-Nov-05 04:28:10]
Problems and Requirements
Problems and Requirements
enormous data amount
❍ WWW has small bandwidth ❍ need of techniques to reduce the amount of data transmitted
individual object presentation
❍ Web pages show data from systems point of view ❍ display data from the users point of view
Interactions
❍ initially WWW and VRML were static ❍ need intuitive way to interact with the model
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Problems and Requirements
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Why using the WWW as a 3D-GIS front end ?
Why using the WWW as a 3D-GIS front end ?
spread information to a multitude of users
available on several hardware platforms
integrate data from multiple sources
area of applications:
❍ architecture and urban planning ■ from presenting plans up to participatory planning
❍ tourist information ■ route planning, historical sites, virtual museums
❍ etc
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Why using the WWW as a 3D-GIS front end ?
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Introduction and Overview
Introduction and Overview
advantages and disadvantages of the WWW
state of the art
GOOVI-3D:
architecture for using the WWW as a 3D-GIS front end
propose essential VRML extensions
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Interactive Access and Visualization of 3D Geographic Information in the World Wide Web
Interactive Access and Visualization of 3D Geographic Information in the World Wide Web
Dipl.-Inform. Volker Coors
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