5. Interoperability
• Establish common understanding on concepts
• Web Services
– Common interfaces available through the Web
– HTTP & XML
• Open Geospatial Consortium
– Not-for-profit
– international voluntary consensus standards
organization
6. OGC Web Feature Service
• Web Services for feature data on the web
– HTTP & XML
– GML
– Features can be queried by featuretype
– Query is expressed through Filter Encoding
• Operations
– GetCapabilities
– DescribeFeatureType
– GetFeature
– Insert (WFS-transactional)
7. Technical setup – Web
GEONETCast
data server
OGC Web
Coverage Service
OGC Web
Map Service
Clients
getMap
getCoverage
Query real-time and historic data through interoperable Web
Services
OGC Web
Feature Service
getFeature
GML / KML
8. MODIS data
• Moderate Resolution Imaging
Spectroradiometer [Justice et al. 1998]
• Operated by NASA
– Surface Reflectance
– Land surface temperature
– Vegetation index
– Fire Products [Giglio et al. 2002]
– Land Cover
– Biological productivity
9. FireWebService
• Desaster management
• Based on MODIS fire product (mod 14)
• Identify potential fires
– Fire detection algorithm
– Raster fire events as points
– Confidence value
• Processed from GEONETCast data
17. Conclusion
• Web-based access to GEONETCast data
– Real-time & historical data
– Fire Web Service
• Interoperability
– WFS & KML
• Free and Open Source Software
– GeoServer, GeoExt, OpenLayers
• Open issues
– Performance & endurance
– Validation of results
18. Thanks for your attention!
swsl.uni-muenster.de/research/geonetcast/
Theodor Foerster
theodor.foerster@uni-muenster.de