HMA-FO ODA, June 2011 HMA Follow-On Task 3 Online Data Access (ODA) in the frame of ESA's Heterogeneous Missions Accessibility (HMA) initiative Final Presentation - GSCB ESRIN 21. June 2011

HMA-FO ODA, June 2011 Agenda Slide 2 EO-WCS Concepts Overview Definitions Dataset Series - Past Dataset Series - Now Stitched Mosaics – Now Improvements with WCS and EO-WCS Future Developments Summary Task-3 Demonstration Server Administration – Adding a Dataset Series Client

HMA-FO ODA, June 2011 EO-WCS Concepts - Overview Slide 3  Data structures:  EO Coverage = Coverage + EO Metadata + Lineage RectifiedGridCoverage or ReferenceableGridCoverage  Dataset = 2D “horizontal” EO Coverage  Stitched Mosaic = homogeneous grouping Can be seen as a coverage itself  Dataset Series = heterogeneous grouping  Operations:  Capabilities document: more flexible  DescribeCoverage, GetCoverage: as known  DescribeEOCoverageSet: spatio-temporal search possibility

HMA-FO ODA, June 2011 Definitions EO-WCS EO vocabularyEO-WCS scene / image / product / raster data (image) / raw data (image) / orthoimage dataset mosaic / seamless mosaicdataset long lat long lat j i rectified grid coverage refereceable grid coverage Slide 4

HMA-FO ODA, June 2011 Definitions EO-WCS EO vocabularyEO-WCS series / time seriesdataset series extraction from a 2-D dataset series by repeated GetCoverage Requests t long lat DescribeEOCoverageSet provides a set of dataset descriptions Slide 5

HMA-FO ODA, June 2011 Definitions EO-WCS EO vocabularyEO-WCS google-like mosaic / composite mosaic stitched mosaic lat long lat long t dataset series 2-D stitched mosaic Slide 6 DescribeEOCoverageSet (mosaic ID) provides a set of descriptions of the dataset used in the mosaic DescribeCoverage (mosic ID) provides a descriptions of the mosaic

HMA-FO ODA, June 2011 Definitions EO-WCS EO vocabularyEO-WCS collectiondataset series long lat t A B D E C A ….. dataset (e.g. scene) B ….. dataset (e.g. seamless mosaic) C ….. datasets of dataset series (e.g. time series) D ….. datasets of dataset series E ….. dataset series (e.g. collection) Slide 7 A dataset may be a member in different dataset series

HMA-FO ODA, June 2011 Dataset Series - Past  Discover the required data using a Catalog  Go to FTP-site  Discover respective files  Download 1 st big file  Wait until download is finished  Download 2 nd big file  Wait …  Download 3 rd big file  Wait …  Download other big files  Wait …  Extract the AOI from each file and throw away the rest What needs to be done if you just need a small AOI ?

HMA-FO ODA, June 2011 Slide 9 With all that waiting, one may end up like this …. Credit: Ambro Dataset Series - Past

HMA-FO ODA, June 2011 Slide 10  You may discover the required data using a Catalog  You may Order using direct links from the Catalog for each item OR …  You may use a EO-WCS enabled Client  Request information about the dataset series  Supply the AOI  Supply your time-frame (TOI)  You may request details for each Dataset  Request the datasets of your AOI/TOI and  Wait until download of the AOIs requested is finished What can EO- WCS do for you if you just need a small AOI ? Dataset Series - Now

HMA-FO ODA, June 2011 Slide 11 That's much more rewarding … Dataset Series - Now Credit: Ambro

HMA-FO ODA, June 2011 StitchedMosaic - Now Slide 12  But each pixel will keep its history  Each coverage has its metadata record  Overlaying coverages replace existing ones EO Metadata Record-1EO Metadata Record-2 EO-WCS allows to keep track of the metadata history of stitched mosaics?

HMA-FO ODA, June 2011 Improvements with WCS / EO-WCS  Users  No more endless file-listings on FTP-Servers without knowing file-content  Less data download necessary  you get only what you really need (AOIs/TOIs)  Access to original data  Providers  Offer original data or rectified data  No data duplication required  Possibility of full integration into complex service chains (e.g. pass a coverage to a Web Processing Service, WPS)  Better quality of service provisioning Slide 13

HMA-FO ODA, June 2011 Slide 14 Future (1)  Aim: EOxServer to become official Reference Implementation of EO-WCS  Full integration of results from OWS-8  Support of the envisaged band subsetting extension  Coverage format support: NetCDF (including the option for CF-netCDF) (via GDAL) JPEG2000 (via some available Open Source implementation (TBD)) HDF-EOS (via GDAL)  Ongoing development in parallel ESA funded project O3S (Online Open-standard Observation Service)  Demonstrate scalability with large number of coverages (  FP7 EarthServer Project)  Coupling of rasdaman and EOxServer (combine WCPS and EO-WCS) WCS & EOxServer

HMA-FO ODA, June 2011 Slide 15 Future (2)  Support FTP as Back-end access protocol (e.g. towards legacy Rolling Archives, Virtual Archives)  Demonstrate suitability for complex Use Cases  WCS-T, WCPS, ReferenceableGridCoverages  WCS extensions (Standards & Implementation): CRS, Scaling & Interpolation, RangeSubsetting  Tools for automation of Administration tasks (e.g. hourly updating of offered coverages)  Provision of TEAM 2.0 compatible conformance test suites  Generalize EOxServer to support other Map-Servers  Update WCS Client to support further extensions WCS & EOxServer

HMA-FO ODA, June 2011 Slide 16 Task-3 Achievements  WCS 2.0 released as OGC Implementation Standard  EO-WCS as OGC Implementation Standard (to be released soon)  Implementation of WCS 2.0 Server (  MapServer)  Implementation of EO-WCS Server (  EOxServer)  Implementation of WCS 2.0/EO-WCS enabled Client (  WebMapViewer ) Summary

HMA-FO ODA, June 2011 Slide 17 Demonstration – Server  Administration Interface – show easiness of adding a Dataset Series to EOxServer (3min) Demonstration – Client  Integrated in overall Demo-Scenario  Discover EO Product within a Dataset Series through AOI and time period (TOI)  Visualize Coverage  Influence Portrayal  Download Coverage  Show coverage metadata Demonstration

HMA-FO ODA, June 2011 Contacts  EOX IT Services GmbH, Austria (Prime)  G.I.M. Geographic Information Management nv/sa, Belgium  Jacobs University Bremen gGmbH, Germany  Spot Image SA, France