Open Standard based Visualization Infrastructure for 3D Geospatial Information

Transcription

1 X3D Earth Open Standard based Visualization Infrastructure for 3D Geospatial Information 13 January 2008 / Web3D Korea Forum 유병현 Byounghyun Yoo Web3D Consortium Fellow MOVES (Modeling, Virtual Environment and Simulation) Institute Naval Postgraduate School

2 Contents Web3D Consortium Working Groups X3D CAD X3D Earth Digital Earth X3D Earth Progress Applications Real time simulation infrastructure of satellite imagery Video fusion for security and surveillance X3D Earth Mash up 2 Byounghyun Yoo NPS

3 Web3D Consortium

4 X3D Specifications X3D graphics is defined by a set of specifications These specs are developed by working group volunteers as part of the Web3D Consortium Non profit organization with business, non profit, academic and professional members Efforts include editing, implementing and evaluating Specification results reviewed and approved by International Organization for Standards (ISO) 4 Byounghyun Yoo NPS

5 Current Working Groups X3D Earth H Anim ISO X3D WG Web3D Board CAD Networking UI 5 Byounghyun Yoo NPS

6 X3D CAD CAD Working Group TC184/SC4 3D Visualization ad hoc group Assessment for 36 requirements matrix 5 candidate format JT Open (13 Jan) U3D (27 Jan) X3D (10 Feb) Collada (24 Feb) 3D XML (10 Mar) Wiki will let us each edit and improve the responses. Adding images to illustrate example capabilities will also help us "tell the X3D story to TC184 reviewers, and eventually others as well. _Visualization_Requirements_for_X3D_CAD 6 Byounghyun Yoo NPS

7 X3D CAD X3D CAD Strategy Yumetech proposal as CAD component level 3, perhaps targeted to support lightweight/mobile applications and platforms EDF proposal as CAD component level 4, targeted to support fully capable desktop/laptop applications and platforms Harmonize terminology, make consistent KAIST parametric history allows broad translation of various CAD formats into X3D 7 Byounghyun Yoo NPS

8 X3D Earth

9 Geospatial Information Geospatial information for simulation Geobrowser Pros: Navigation, Visualization Cons: Lack of simulation capability and interoperability Geospatial Data Virtual Environment, Modeling and Simulation 9 Byounghyun Yoo NPS

10 X3D Earth Extensible 3D (X3D) Graphics Interoperability ISO approved Web standard for 3D Ensure 3D assets remain royalty free, achievable, usable, consistent with Web X3D Earth Build globe models: terrain, imagery, etc. Enable government generation of servers Web architecture: W3C, OGC standards X3D model of planet Earth Publicly available datasets X3D Geospatial component Interconnect, linkable 10 Byounghyun Yoo NPS

11 X3D Earth Globe Implementation Progress The X3D Earth project is creating a standards based 3D visualization infrastructure for visualizing all manner of real world objects and information 2008 Maximum Resolution X3D Earth Globe Prototype of X3D Earth Server November 2007 Earth Globe Model X3D Earth working group meeting Multiple Globes with Geospatial component August 2007 Local Area Models (SIGGRAPH) Multi resolution (non geospatial component) Geospatial component for simple test model November 2006 Technical Requirement Workshop 11 Byounghyun Yoo NPS

12 X3D Geospatial Components Geospatial support The geospatial components of this part of ISO/IEC Provide support for geographic and geospatial applications This support includes the ability To embed geospatial coordinates in certain X3D nodes To support high precision geospatial modeling To handle large multi resolution terrain databases The Geospatial components include conventions that are defined by the Spatial Reference Model (see ISO/IEC 18026) 12 Byounghyun Yoo NPS

13 X3D Geospatial Component Support Level Prerequisites Nodes/Features Support 1 Core 1 GeoCoordinate All fields fully supported. Time 1 GeoElevationGrid G id All fields fully supported. td Networking 1 GeoLocation All fields fully supported. Grouping 3 GeoLOD All fields fully supported. Rendering 1 GeoMetadata All fields fully supported. Shape 1 GeoOrigin i All fields fully supported. td Geometry3D 1 GeoPositionInterpolator All fields fully supported. Interpolator 1 GeoTouchSensor All fields fully supported. Point device sensor 1 GeoViewpoint All fields fully supported. Navigation 1 2 Core 1 Time 1 Networking 1 Grouping 3 Rendering 1 Shape 1 Geometry3D 1 Interpolator 1 Environmental device sensor 1 Navigation 1 All Level 1 Geospatial nodes GeoProximitySensor GeoTransform All fields fully supported. Allfields fully supported. All fields fully supported. 13 Byounghyun Yoo NPS

14 X3D Terrain Tile Production Input: Geospatial data X3D simulation Output: Geo referenced real time simulation environment 14 Byounghyun Yoo NPS

15 Level of Detail Terrain tile Imagery tile 15 Byounghyun Yoo NPS

16 X3D Earth Globe Server side tile generation Geo referenced LOD 16 Byounghyun Yoo NPS

17 17 Byounghyun Yoo NPS NUWC's DNC to X3D

18 X3D Earth Level of Detail Structure 18 Byounghyun Yoo NPS

19 Georeferenced LOD with Imagery 19 Byounghyun Yoo NPS

20 20 Byounghyun Yoo NPS X3D Earth Server (NPS)

21 X3D Globe with OpenStreetMap p 21 Byounghyun Yoo NPS

22 Simulation using satellite imagery Satellite Imagery Building Virtual Environment 3D Simulation Framework Image Processing 3D Data Acquisition Modeling & Simulation Modeling & Simulation 22 Byounghyun Yoo NPS

23 3D Simulation using Satellite Imagery GIS system (ArcGIS) Google Earth Microsoft Virtual Earth NASA World Wind ESRI ArcExplorer X3D (X3D Earth) Resource data User data Rich Rich User data User data User data Interoperability High Low Low Low High High * User data Yes Yes Yes Yes Yes Yes overlay Real time 3D Low High High High Medium High Interactive Low Medium Medium Medium Low High simulation Analysis High Low Low Low Medium Low Usability for API API API SDK? XML, extension ECMAScript (Easier) Web Interface Extra Cost Yes Yes Extra Dev No Yes Cost (tools) High Free Free Free Free Free Cost (for business) High High High High? Low 23 Byounghyun Yoo NPS * X3D Earth is adding several OGC standards

24 Approach Motivation Real time 3D simulation using high resolution satellite imagery Problem statement Lack of interoperability b/w tools, information model and infrastructure of GIS, real time 3D graphics and simulation Approach Find open standard based information model Technical requirements Compare functionality, interoperability, usability, and run time framework Build framework and tools for information process Frame work for geospatial information processing from raw data dt to 3D simulation Open source tools 24 Byounghyun Yoo NPS

25 Information model Primary requirements Geospatial support Spatial reference frame, Earth geoids, et al. Open architecture Interoperability Real time 3D Interactive simulation Secondary requirements Metadata CAD layer User interaction and scripting Extensibility Advanced 3D graphics support 25 Byounghyun Yoo NPS

26 Geospatial Information Model GML/CityGML KML X3D SEDRIS SDTS * DXF Geospatial Feature Feature Geospatial Environmental Profile Geodata Component Component Data object Standards ISO, ISO, ISO, ISO, USGS Autodesk Organization OGC Google, OGC Web3D.org SEDRIS.org Interoperability Yes Yes Yes Yes Weak Weak Simulation N/A Limited, simple task Interactive profile Yes N/A N/A Real Time 3D Weak Yes Yes Limited Limited Limited Multimedia N/A Limited Yes N/A N/A N/A Run time Limited Google Earth, Multiple Limited N/A N/A Architecture geobrowsers implementation Advanced 3D N/A N/A Shader support N/A N/A N/A 26 Byounghyun Yoo NPS * Spatial Data Transfer Standards, USGS

27 Primary Requirements Open 3D Graphics Standards Table by courtesy of Nathan Crews, Autodesk, Inc, 2008 XAML U3D X3D Collada KML OpenHSF Is XML? Yes No Yes Yes Yes No Standards Organization Microsoft ECMA ISO Web3D.org Collada.org Google.com / OGC GeoSpatial Support No No Yes No Yes No Shader Support No No Cg, GLSL, HLSL Cg, GLSL, No No HLSL Textures Yes Yes Yes Yes No Yes Animations Yes Yes Yes Yes No Yes Multi Textures Yes No Yes Yes No Yes Meta data support Yes Yes Yes Yes Yes Yes Secondary Requirements Additional geometric Yes No Yes No No Yes compression beyond zip compression CAD layer support No Yes Yes No Yes Yes User interaction & Yes Yes Yes No No Yes scripting 27 Byounghyun Yoo NPS OpenHSF.org

28 Evaluation result Evaluation of Open Standards Geospatial standards Comparison over 6 geospatial information model 3D graphics standards Comparison over 6 open standards and over 42 graphics file format 3D graphics standards Real time simulation requirements Geospatial standards Geospatial requirements 28 Byounghyun Yoo NPS X3D Geospatial component ISO/IEC 19775

29 Proposed X3D Terrain Tile Production Satellite Imgery Elevation 29 Byounghyun Yoo NPS

30 Real time 3D terrain models 30 Byounghyun Yoo NPS

31 Movie Texture Movie Texture Mapping Movie Texture Image를가상의스크린에투사하여 Texture Mapping Camera Model과 Projection Model의상관관계 Viewpoint Camera Texture Image Virtual Screen View Volume View Volume of the Camera Projective Texture Image on the scene Recorded Image 31 Byounghyun Yoo NPS

32 Security and Surveillance X3D 기반 Video Fusion 시스템의구성 X3D Video Projection X3D Terrain Generation Georeferencing, Movie Texture Mapping Video Stream Terrain Elevation 3D 공간정보기반가상환경 Camera Information (Lens, Focal Length, FoV) Reference Information (Location, Orientation) X3D Material Appearance X3D Model Georeferencing Typed Metadata Aerial Photograph 3D Building Model 32 Byounghyun Yoo NPS

33 33 Byounghyun Yoo NPS Video Fusion

34 Mesh up Algeria Radio Tower

35 Video 2 Synthetic World

36 Byounghyun Yoo, Ph.D. Wb3DC Web3D Consortium Fll Fellow Modeling, Virtual Environments and Simulation Institute Naval Postgraduate School Web: X3D Earth: earth.nps.edu edu Web3D Consortium: earth 36 Byounghyun Yoo NPS