1. WCS Earth Observation Application Profile
HMA Follow-On Task 3
WCS Earth Observation Application Profile
Acceptance Review 1 1

2. Agenda Concepts Overview Data Structures Services XML Schema
Abstract Test Suite
Executable Test Suite / Server
Summary
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3. Concepts Overview 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
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4. EO Coverage
Coverage
EO Metadata
Bi-directional link -> can use EO-AP structuring means or EO Metadata mechanisms (parentOf, composedOf, ...)
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5. Agenda Concepts Overview Data Structures Services XML Schema
Abstract Test Suite
Executable Test Suite / Server
Summary
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6. Definitions WCS EO AP EO vocabulary WCS EO AP
scene / image / product / raster data (image) / raw data (image) / orthoimage
dataset
mosaic / seamless mosaic
long
lat
long
lat j i j i
rectified grid coverage
referenceable grid coverage
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7. Definitions WCS EO AP EO vocabulary WCS EO AP series / time series
dataset series
DescribeEOCoverageSet provides a set of Dataset and/or Stitched Mosaic descriptions t
lat
extraction from a 2-D dataset series by repeated GetCoverage Requests
long
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8. Definitions WCS EO AP EO vocabulary WCS EO AP
google-like mosaic / composite mosaic
Stitched Mosaic
lat
DescribeEOCoverageSet (mosic ID) provides a set of descriptions of the Dataset used in the Stitched Mosaic t
dataset series
long
DescribeCoverage (mosic ID) provides a descriptions of the mosaic
2-D stitched mosaic
long
lat
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9. Definitions WCS EO AP EO vocabulary WCS EO AP collection
dataset 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)
A dataset may be a member in different Dataset Series
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10. Agenda Concepts Overview Data Structures Services XML Schema
Abstract Test Suite
Executable Test Suite / Server
Summary
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11. Services GetCapabilities
Output: coverage & Dataset Series descriptions
DescribeCoverage
Input: coverage identifiers
Output: coverage descriptions (incl EO Metadata)
GetCoverage
Input: coverage identifier
Output: 2D (sub) coverage (incl EO Metadata)
DescribeEOCoverageSet
Input: identifier + space/time bbox
Output: descriptors of matching coverages
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12. DescribeEOCoverageSet
Request structure:
Response structure:
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13. Agenda Concepts Overview Data Structures Services XML Schema
Abstract Test Suite
Executable Test Suite / Server
Summary
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14. Capabilities Contents
<wcs:Contents> <wcs:CoverageSummary> <wcs:CoverageId>someCoverage</wcs:CoverageId> <wcs:CoverageSubtype>RectifiedGridCoverage</wcs:CoverageSubtype> <wcs:CoverageSubtype>RectifiedEOCoverage</wcs:CoverageSubtype> <wcs:CoverageSubtype>RectifiedDataset</wcs:CoverageSubtype> </wcs:CoverageSummary> <wcseo:DatasetSeriesSummary> <ows:WGS84BoundingBox> <ows:LowerCorner> </ows:LowerCorner> <ows:UpperCorner>180 90</ows:UpperCorner> </ows:WGS84BoundingBox> <wcseo:DatasetSeriesId>someDatasetSeries</wcseo:DatasetSeriesId> <gml:TimePeriod gml:id="someDatasetSeries_timeperiod"> <gml:beginPosition> T00:00:00.000</gml:beginPosition> <gml:endPosition> T23:59:59.999</gml:endPosition> </gml:TimePeriod> </wcs:DatasetSeriesSummary> </wcs:Contents>
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15. Coverage Description
<wcs:CoverageDescriptions> <wcs:CoverageDescription gml:id="c1"> <gml:boundedBy> <gml:Envelope srsName=" axisLabels="Lat Long" srsDimension="2" uomLabels="deg deg"> <gml:lowerCorner> </gml:lowerCorner> <gml:upperCorner> </gml:upperCorner> </gml:Envelope> </gml:boundedBy> <wcs:CoverageId>c1</wcs:CoverageId> <gmlcov:metadata> <wcseo:EOMetadata> <eop:EarthObservation gml:id="c1_metadata"> <om:phenomenonTime> <gml:TimePeriod gml:id="c1_tp"> <gml:beginPosition> T10:00:06.000</gml:beginPosition> <gml:endPosition> T10:20:26.000</gml:endPosition> </gml:TimePeriod> </om:phenomenonTime> <om:resultTime> <gml:TimeInstant gml:id="c1_archivingdate"> <gml:timePosition> T11:02:47.999</gml:timePosition> </gml:TimeInstant> </om:resultTime> <om:procedure/> <om:observedProperty/> <om:featureOfInterest> <eop:Footprint gml:id="c1_fp"> <eop:multiExtentOf> <gml:MultiSurface gml:id="c1_ms" srsName="EPSG:4326"> <gml:surfaceMembers> <gml:Polygon gml:id="c1_fppoly"> <gml:exterior> <gml:LinearRing> <gml:posList> </gml:posList> </gml:LinearRing> </gml:exterior> </gml:Polygon> </gml:surfaceMembers> </gml:MultiSurface> </eop:multiExtentOf> <eop:centerOf> <gml:Point gml:id="c1_p" srsName="EPSG:4326"> <gml:pos> </gml:pos> </gml:Point> </eop:centerOf> </eop:Footprint> </om:featureOfInterest> <om:result/> <eop:metaDataProperty> <eop:EarthObservationMetaData> <eop:identifier>c1</eop:identifier> <eop:acquisitionType>NOMINAL</eop:acquisitionType> <eop:status>ARCHIVED</eop:status> </eop:EarthObservationMetaData> </eop:metaDataProperty> </eop:EarthObservation> <lineage/> </wcseo:EOMetadata> <gmlcov:metadata> <gml:domainSet> <gml:RectifiedGrid dimension="2" gml:id="c1_grid"> … </gml:RectifiedGrid> </gml:domainSet> <gmlcov:rangeType> … </gmlcov:rangeType> <wcs:ServiceParameters> <wcs:CoverageSubtype>RectifiedGridCoverage</wcs:CoverageSubtype> <wcs:CoverageSubtype>RectifiedEOCoverage</wcs:CoverageSubtype> <wcs:CoverageSubtype>RectifiedDataset</wcs:CoverageSubtype> </wcs:ServiceParameters> </wcs:CoverageDescription> </wcs:CoverageDescriptions>
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16. DescribeEOCoverageSet Response
<wcseo:EOCoverageSetDescription> <wcs:CoverageDescriptions> <wcs:CoverageDescription gml:id="c1"> <gml:boundedBy>…</gml:boundedBy> <wcs:CoverageId>c1</wcs:CoverageId> <gmlcov:metadata> <wcseo:EOMetadata> <eop:EarthObservation gml:id="c1_metadata"> … </eop:EarthObservation> </wcseo:EOMetadata> </gmlcov:metadata> domain, range type </wcs:CoverageDescription> </wcs:CoverageDescriptions> <wcseo:DatasetSeriesDescriptions> <wcseo:DatasetSeriesDescription gml:id="ds2"> <gml:boundedBy>...</gml:boundedBy> </wcseo:DatasetSeriesDescription> </wcseo:DatasetSeriesDescriptions> </wcseo:EOCoverageSetDescription>
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17. Agenda Concepts Overview Data Structures Services XML Schema
Abstract Test Suite
Executable Test Suite / Server
Summary
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18. Abstract Test Suite 81 requirements -> 81 conformance tests
Status: first version completed, under adaptation to recent changes
Estimate: in 2 weeks
Following scheme of WCS Core
See document for examples
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19. Agenda Concepts Overview Data Structures Services XML Schema
Abstract Test Suite
Executable Test Suite / Server
Summary
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20. Executable Test Suite Server testing
Status: GetCapabilities implemented
See demo
Remaining tests to be written once ATS is finished
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21. Agenda Concepts Overview Data Structures Services XML Schema
Abstract Test Suite
Executable Test Suite / Server
Summary
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22. SWG Wiki: Service Exts
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23. SWG Wiki: Format Exts
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24. SWG Wiki: Corrigenda
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25. SWG Wiki: A‘Profiles
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26. Summary Status achieved: Specification stable up to fine tuning
WCS.SWG telecon on Feb 09, version on Twiki
ATS finished soon, ETS to follow
Plans: agree with SWG, get adopted
Hot discussion on several OGC lists: how to model EO observations? What specs to use?
Suggesting EO-AP as role model
Target: O&M profiles all refer to coverages
Discussions foreseen for Bonn TC meeting
INSPIRE ortho image TWG meeting tomorrow
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