a virtual globe for the interactive display of opendap data we-mav-01 (fy07)
DESCRIPTION
Nancy Soreide 1 Albert J Hermann 2 Joseph Sirott 1. A Virtual Globe for the Interactive Display of OPeNDAP Data WE-MAV-01 (FY07). 1 NOAA/PMEL, Seattle, WA 98115 2 NOAA/PMEL/JISAO-University of Washington, Seattle, WA 98195. - PowerPoint PPT PresentationTRANSCRIPT
A Virtual Globe for the A Virtual Globe for the Interactive Display of Interactive Display of OPeNDAP DataOPeNDAP DataWE-MAV-01 (FY07) WE-MAV-01 (FY07)
Nancy Soreide1
Albert J Hermann2
Joseph Sirott1
1 NOAA/PMEL, Seattle, WA 981152 NOAA/PMEL/JISAO-University of Washington, Seattle, WA 98195
New technologies can promote New technologies can promote public visualization of NOAA’s public visualization of NOAA’s data assetsdata assets1) Virtual globe software (and Google
Earth in particular) is steadily capturing the imagination of the public, as a natural interface for geospatial data.
2) A steadily increasing catalogue of NOAA’s oceanographic and atmospheric data is available through OPeNDAP technology.
3) Low-cost immersive technology (e.g. the GeoWall) has proven its value in public education and scientific analysis, for the display of geospatial data.
Google EarthGoogle EarthGE is a free geospatial viewer
with the popular appeal of a videogame experience
GE has a simple scripting language: KML (keyhole markup language) http://www.keyhole.com/kml/kml_tut.html
A free stereo viewer for GE is now available: http://www.tridef.com/promotions/google-earth.html
Google Earth topography in Google Earth topography in stereo stereo
We use model output to We use model output to demonstrate oceanic demonstrate oceanic capabilitiescapabilities
Accomplishments thus farAccomplishments thus farRendered simple objects in GE:
◦2D plots◦Animated translucent 3D “fog” ◦Animated 3D float tracks with bathymetry
Utilized an openDAP server (DAPPER) to render isosurfaces in GE
Assembled a portable geowall for immersive stereo rendering
Demonstrated the system to a large audience
Simple 2-D plot in GESimple 2-D plot in GE using gif transparency using gif transparency
Stacked translucent gifs Stacked translucent gifs create 3D“fog”create 3D“fog”
GE presently has no ocean depth so must build 3D worlds in to the sky….
3D fog: results from CGOA 3D fog: results from CGOA modelingmodelingTemperature of the top 100m of
the oceanJun 03- Jun 08 of 2001Red is hotter, Blue is colderHere, look directly down from
above, through the fog
June 03 2001June 03 2001
June 04 2001June 04 2001
June 05 2001June 05 2001
June 06 2001June 06 2001
June 07 2001June 07 2001
June 08 2001June 08 2001
Sample 3D float track with Sample 3D float track with crude bathymetry surfacecrude bathymetry surface
DAPPER server for display of DAPPER server for display of surfaces in GEsurfaces in GEInteractive selection of region,
time, isosurfaceDemo version hosts Eco-FOCI
model outputGenerates kml file which is
displayed by GEUses COLLADA language for
compact representation of surfaces
Salinity isosurface (red) Salinity isosurface (red) with bathymetry (blue)with bathymetry (blue)
Visualize in stereo!Visualize in stereo!
Same surfaces from a Same surfaces from a different angledifferent angle
Equipment for portable Equipment for portable stereo systemstereo systemLaptop with dual video outputSmall projectors (each ~size of a
submarine sandwich)Medium-sized screen, easy to
carryPolarized glasses
A portable geowall in A portable geowall in use…use…
Projectors are small!
Issues for future workIssues for future workWe anticipate GE will add ocean
bathymetry◦This would allow a true 3D ocean in the
oceanGE has high potential for interactive
display from many sources◦Live Access Server has interactive
refresh during navigation in GE◦Simultaneously compare model output
with data from multiple servers