X3DEarth The Earth Globe Implementation Progress with X3D Geospatial Component

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X3D-EarthThe Earth Globe Implementation
Progresswith X3D Geospatial Component

• 31 January 2008, NPS
• Byounghyun Yoo
• Naval Postgraduate School
• www.byoo.net

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X3D Earth

• X3D Earth
• Open standards-based infrastructure for
  visualizing information in a geospatial context.
• Web architecture
• XML languages
• Open source, Open protocols, Open framework
• Usable by governments, industry, scientists,
  academia and the general public
• What is it
• X3D model of planet Earth
• Publicly available datasets
• X3D Geospatial component
• Interconnect, linkable

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Content Production

• X3D-Earth implementation progress
• Server-side tile generator
• Rez, open-source Java
• jeospace, Java, GeoTools
• Globe model implementation
• Several Earth globe models
• Geospatial referencing

Geospatial Data
X3D
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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
• November 2007 Earth Globe Model
• X3D-Earth working group meeting
• Several globe with Geospatial component
• August 2007 Local Area Models (SIGGRAPH)
• Multi-resolution model with non-geospatial
  component
• Geospatial component for simple test model
• November 2006 Technical Requirement Workshop

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Server-side Globe Generator

• Globe Generators
• Rez
• Open source framework, multi-resolution models
  for X3D or VRML
• JeoSpace
• Yumetech's glob generator
• MBARIs Bathymetry and terrain tile generator
• SRI tools, Mike McCann
• Digital Nautical Chart
• NUWCs DNC to X3D tile generation software

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Terrain Tile Production Chain
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Local Area Models

• Multi-resolution X3D Models
• Multiple browsers

Flux Player
BS Contact (San Clemente Island, CA)
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High Resolution LOD Tile Generation
? LANSAT7 (30m)
? 1m Resolution
? High Resolution Urban Area Imagery (0.3m
Resolution)
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Scene Graph Patterns
? Quad tree
? Binary tree
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LoD Tiles
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Naming Convention and Coordinate System

• GeoElevationGrid
• height array Values are given in row-major order
  from west to east, south to north

? Image texture
? Elevation tile
? GeoGridOrigin
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Data Consistency

• Coordinate system
• Issue related with
• Data consistency
• Naming convention
• Direction of data description
• Etc

• Geospatial Referencing
• LOD tile chaining b/w different tile sets

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X3D-Earth Globe Models

• Blue Marble
• Imagery data Blue Marble
• Elevation data SRTM30 Plus
• Number of LoD 7 levels for global representation
  plus 5 more levels for specific locations (Boston
  and Seattle)
• Generator jeospace
• Creator Rex Melton, 10/3/2007

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X3D-Earth Globe Models

• Earth Terrain and Bathymetry
• Imagery data Color scale texture image
• Elevation data 1 Minute Grid terrain and
  bathymetry
• Number of LoD Two 7 level (0 to 6 levels
  quadtree) each for West and East side the globe
• Generator Rez
• Creator Byounghyun Yoo 10/23/2007

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X3D-Earth Globe Models

• Blue Marble with LanSat
• Imagery data Blue Marble LANSAT7
• Elevation data SRTM30 Plus NED (30m)
• Number of LoD Two 7 level (0 to 6 levels
  quadtree) each for West and East side the globe,
  and an additional 7 levels for San Francisco Bay
  area
• Generator Rez, Creator Byounghyun Yoo
  10/28/2007

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Production MBARI Intranet Application
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NUWC's DNC to X3D
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Demonstration

• The Earth globe demonstration

- Quad tree - 20 Level of details - 0.3 meter
resolution
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x3d-earth.nps.edu
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Thank you

• Byounghyun Yoo
• Naval Postgraduate School
• www.byoo.net