A CityGML-based encoding for the INSPIRE Data Specification on Buildings

Transcription

1 A CityGML-based encoding for the INSPIRE Data Specification on Buildings Gerhard Gröger 1, Tatjana Kutzner 2, Thomas H. Kolbe 2 1 Institute for Geodesy and Geoinformation, University of Bonn 2 Chair of Geoinformatics, kutzner@tum.de 26 June, 2013 INSPIRE Conference 2013, Florence, Italy

2 INSPIRE Data Specification on Buildings The theme Buildings is specified as part of the Annex III data themes of the INSPIRE Directive and is intended to meet the needs of use cases which involve buildings and other constructions such as environment, security, infrastructure, spatial planning, census and public awareness. The development of the INSPIRE Buildings data model was strongly influenced by the international OGC standard CityGML How can both specifications be used in an interchangeable way? G. Gröger, T. Kutzner, T. H. Kolbe A CityGML-based encoding for INSPIRE Buildings 2

3 INSPIRE Buildings Four Profiles Profile Normative Geometry Semantics (extract) Core 2D Yes 2D / 2,5D, polygon / point Core 3D Yes 3D, CityGML LoD1-3 (outer shell) Extended 2D No Extended 3D No 2D / 2,5D, polygon / point 3D, CityGML LoD1 4 ) building, building part, date of construction, external reference, name, current use, number of floors, number of dwellings (BuildingsBase) equivalent to Core 2D (BuildingsBase) Core 2D plus address, other construction, building unit, materials, roof type (BuildingsExtendedBase) BuildingsExtendedBase plus CityGML objects (walls, doors, windows, installations, textures, ) 3 Das INSPIRE Buildings Datenmodell Plenarsitzung SIG 3G, BKG, G. Gröger

4 INSPIRE Buildings Six Application Schemas and their Relation to the Four Profiles Core 2D profile Core 3D profile Extended 2D profile Extended 3D profile Source: INSPIRE Data Specification on Buildings, D2.8.III.2_v3.0rc3.pdf G. Gröger, T. Kutzner, T. H. Kolbe A CityGML-based encoding for INSPIRE Buildings 4

5 City Geography Markup Language CityGML Application independent Geospatial Information Model for semantic 3D city and landscape models comprises different thematic areas (buildings, vegetation, water, terrain, traffic, tunnels, bridges etc.) Internat l Standard of the Open Geospatial Consortium V1.0.0 adopted in 08/2008; V2.0.0 adopted in 3/2012 Data model (UML) Exchange format (based on GML3) CityGML represents 3D geometry, 3D topology, semantics, and appearance in 5 discrete scales (Levels of Detail, LOD) G. Gröger, T. Kutzner, T. H. Kolbe A CityGML-based encoding for INSPIRE Buildings 5

6 Chair of Geoinformatics G. Gröger, T. Kutzner, T. H. Kolbe A CityGML-based encoding for INSPIRE Buildings 6

7 (Inter)national Usage / Availability of CityGML Cities / Municipalities e.g. almost all German cities with 3D city models; Rotterdam, Zürich, Geneva, Paris, Marseille, Istanbul, Vancouver, Montreal, Kuala Lumpur, Yokohama, Doha; however, few implementations in the USA (Blacksburg, Boston in preparation) Organisations e.g. IGN France, Ordnance Survey UK, State Mapping Agencies of Bavaria, Baden-Württemberg, Hesse, Rhineland-Palatinate, North Rhine-Westphalia, BIMTAŞ in Istanbul, many companies, research institutes, and universities CityGML is reference model in the European INSPIRE initiative ( full EU coverage) INSPIRE building model is based on CityGML The official national and municipal 3D geoinformation standards of Germany and the Netherlands base on CityGML G. Gröger, T. Kutzner, T. H. Kolbe A CityGML-based encoding for INSPIRE Buildings 7

8 Software Support for CityGML CityGML is supported by a huge number of software tools Commercial software, Freeware and Open Source Systems for managing and storing CityGML e.g. 3DCityDB, Autodesk Infrastructure Modeler, Bentley Map 3D, ESRI ArcGIS (via the Interoperability Extension), Fraunhofer IGD CityServer3D, Snowflake GoPublisher, Galdos INscape and Inspector, CPA SupportGIS, RhinoTerrain, 3DCon tridicon, M.O.S.S. Novafactory 3D Tools for interactive editing of CityGML models e.g. Trimble/Google Sketchup, Bentley Map 3D, CPA SupportGIS Tools for processing, analyzing, and converting CityGML data e.g. FME, ArcGIS (via the Interoperability Extension), RCP 3D Transformer Web Feature Services capable of handling CityGML data e.g. Galdos INscape, Interactive Instruments XtraServer/WFS, Fraunhofer IGD CityServer, Snowflake GoPublisher, deegree 3 Source: G. Gröger, T. Kutzner, T. H. Kolbe A CityGML-based encoding for INSPIRE Buildings 8

9 INSPIRE ADEs Core3D and Extended3D Source: INSPIRE Data Specification on Buildings, D2.8.III.2_v3.0rc3.pdf CityGML ADEs are to be defined for the 3D profiles only Core3D ADE will be part of the normative section Extended3D ADE will be part of the non-normative section G. Gröger, T. Kutzner, T. H. Kolbe A CityGML-based encoding for INSPIRE Buildings 9

10 INSPIRE ADEs Core3D and Extended3D INSPIRE building data is by default encoded according to D2.7 Guidelines for the encoding of spatial data This encoding differs from the CityGML encoding so that CityGML tools cannot be used straightaway with INSPIRE building data CityGML Application Domain Extensions (ADE) A mechanism which allows to extend the CityGML data model by new properties and new object types This mechanism is applied to the INSPIRE 3D profiles enabling the use of INSPIRE building data with CityGML tools The ADEs have been defined according to the OGC Best Practice Paper OGC Modeling an ADE of CityGML in UML G. Gröger, T. Kutzner, T. H. Kolbe A CityGML-based encoding for INSPIRE Buildings 10

11 INSPIRE Core3D ADE UML Diagram «featuretype» Building::_AbstractBuilding AbstractSite class :BuildingClass [0..1] function :BuildingFunction [0..*] usage :BuildingUsage [0..*] yearofconstruction :Date [0..1] yearofdemolition :Date [0..1] rooftype :RoofType [0..1] measuredheight :Length [0..1] storeysaboveground :Integer [0..1] storeysbelowground :Integer [0..1] storeyheightsaboveground :MeasureList [0..1] storeyheightsbelowground :MeasureList [0..1] lod0footprint :GM_MultiSurface [0..1] lod0roofedge :GM_MultiSurface [0..1] lod1solid :GM_Solid [0..1] lod1multisurface :GM_MultiSurface [0..1] lod1terrainintersection :GM_MultiCurve [0..1] lod2solid :GM_Solid [0..1] lod2multisurface :GM_MultiSurface [0..1] lod2multicurve :GM_MultiCurve [0..1] lod2terrainintersection :GM_MultiCurve [0..1] lod3solid :GM_Solid [0..1] lod3multisurface :GM_MultiSurface [0..1] lod3multicurve :GM_MultiCurve [0..1] lod3terrainintersection :GM_MultiCurve [0..1] lod4solid :GM_Solid [0..1] lod4multisurface :GM_MultiSurface [0..1] lod4multicurve :GM_MultiCurve [0..1] lod4terrainintersection :GM_MultiCurve [0..1] 0..* «ADE» inspireid :Identifier «ADEElement» AbstractBuilding «voidable, lifecycleinfo» beginlifespanversion :DateTime endlifespanversion :DateTime [0..1] «voidable» buildingnature :BuildingNatureValue [0..*] currentuse :CurrentUse [0..*] numberofdwellings :Integer [0..1] numberofbuildingunits :Integer [0..1] geometry2d :BuildingGeometry2D [0..*] geometry3dmetadatalod1 :BuildingGeometry3DMetadataLoD1 [0..1] geometry3dmetadatalod2 :BuildingGeometry3DMetadataLoD2 [0..1] geometry3dmetadatalod3 :BuildingGeometry3DMetadataLoD [0..1] geometry3dmetadatalod4 :BuildingGeometry3DMetadataLoD [0..1] conditionofconstruction :ConditionOfConstructionValue dateofconstruction :DateOfEvent [0..1] dateofdemolition :DateOfEvent [0..1] dateofrenovation :DateOfEvent [0..1] elevation :Elevation [0..*] heightaboveground :HeightAboveGround [0..*] name :GeographicalName [0..*] constraints {no parts of parts} {mapping of INSPIRE Buildings to the CityGML Buildings3D ADE} {one geometry to be provided} {no use of specific CityGML feature types and data types} «featuretype» Building::Building «featuretype» Building:: BuildingPart consistsofbuildingpart 0..* see slide 12 see slide G. Gröger, T. Kutzner, T. H. Kolbe A CityGML-based encoding for INSPIRE Buildings 11

12 INSPIRE Core3D ADE The CityGML classes _AbstractBuilding, Building and BuildingPart which are extended by the Core3D ADE. «featuretype» Building::_AbstractBuilding AbstractSite class :BuildingClass [0..1] function :BuildingFunction [0..*] usage :BuildingUsage [0..*] yearofconstruction :Date [0..1] yearofdemolition :Date [0..1] rooftype :RoofType [0..1] measuredheight :Length [0..1] storeysaboveground :Integer [0..1] storeysbelowground :Integer [0..1] storeyheightsaboveground :MeasureList [0..1] storeyheightsbelowground :MeasureList [0..1] lod0footprint :GM_MultiSurface [0..1] lod0roofedge :GM_MultiSurface [0..1] lod1solid :GM_Solid [0..1] lod1multisurface :GM_MultiSurface [0..1] lod1terrainintersection :GM_MultiCurve [0..1] lod2solid :GM_Solid [0..1] lod2multisurface :GM_MultiSurface [0..1] lod2multicurve :GM_MultiCurve [0..1] lod2terrainintersection :GM_MultiCurve [0..1] lod3solid :GM_Solid [0..1] lod3multisurface :GM_MultiSurface [0..1] lod3multicurve :GM_MultiCurve [0..1] lod3terrainintersection :GM_MultiCurve [0..1] lod4solid :GM_Solid [0..1] lod4multisurface :GM_MultiSurface [0..1] lod4multicurve :GM_MultiCurve [0..1] lod4terrainintersection :GM_MultiCurve [0..1] «ADE» «vo «vo {no {ma {one {no 0..* consistsofbuildingpart 0..* «featuretype» Building::Building «featuretype» Building:: BuildingPart G. Gröger, T. Kutzner, T. H. Kolbe A CityGML-based encoding for INSPIRE Buildings 12

13 INSPIRE Core3D ADE The class «ADEElement» AbstractBuilding contains all attributes which are taken from the INSPIRE Buildings profile Core3D and added to the ADE. The class is modelled as subclass of the CityGML class _AbstractBuilding. Site..1].1]..1]..1]..1] «ADE» «ADEElement» AbstractBuilding inspireid :Identifier «voidable, lifecycleinfo» beginlifespanversion :DateTime endlifespanversion :DateTime [0..1] «voidable» buildingnature :BuildingNatureValue [0..*] currentuse :CurrentUse [0..*] numberofdwellings :Integer [0..1] numberofbuildingunits :Integer [0..1] geometry2d :BuildingGeometry2D [0..*] geometry3dmetadatalod1 :BuildingGeometry3DMetadataLoD1 [0..1] geometry3dmetadatalod2 :BuildingGeometry3DMetadataLoD2 [0..1] geometry3dmetadatalod3 :BuildingGeometry3DMetadataLoD [0..1] geometry3dmetadatalod4 :BuildingGeometry3DMetadataLoD [0..1] conditionofconstruction :ConditionOfConstructionValue dateofconstruction :DateOfEvent [0..1] dateofdemolition :DateOfEvent [0..1] dateofrenovation :DateOfEvent [0..1] elevation :Elevation [0..*] heightaboveground :HeightAboveGround [0..*] name :GeographicalName [0..*] constraints {no parts of parts} {mapping of INSPIRE Buildings to the CityGML Buildings3D ADE} {one geometry to be provided} {no use of specific CityGML feature types and data types}..1] G. Gröger, T. Kutzner, T. H. Kolbe A CityGML-based encoding for INSPIRE Buildings 13

14 Example Transformation of a CityGML data set* with buildings in LOD2 to INSPIRE buildings data according to Annex III * The data was provided by the Bavarian State Mapping Agency (LVG Bayern) T. H. Kolbe INSPIRE 2D und 3D Was kommt da auf uns zu? 14

15 CityGML Example Data Set (Buildings in LOD2) Geobasisdaten Bayerische Vermessungsverwaltung 2013 T. H. Kolbe INSPIRE 2D und 3D Was kommt da auf uns zu? 15

16 Transformation CityGML INSPIRE Core3D ADE Source: A. Donaubauer, T. Kutzner (TU München) These are the entire transformation steps which are required! T. H. Kolbe INSPIRE 2D und 3D Was kommt da auf uns zu? 16

17 Example Data Set in CityGML Core3D ADE (1) <?xml version="1.0" encoding="utf-8"?> <CityModel xmlns:xsi=" >... <cityobjectmember> <bldg:building gml:id="fme-gen-c795911f-40c4-4b "> <externalreference> <informationsystem> </informationsystem> <externalobject> <name> </name> </externalobject> </externalreference> <bldg:function>1002</bldg:function> <bldg:rooftype>3200</bldg:rooftype> <bldg:measuredheight uom="urn:adv:uom:m">3.404</bldg:measuredheight>... to be continued on next slide CityGML building object standard CityGML attributes of a building T. H. Kolbe INSPIRE 2D und 3D Was kommt da auf uns zu? 17

18 Example Data Set in CityGML Core3D ADE (2) <bldg:lod2solid> <gml:solid srsdimension="3">... here the geometry is embedded... </gml:solid> </bldg:lod2solid> standard CityGML geometry <core3d:geometry3dmetadatalod2> <core3d:buildinggeometry3dmetadatalod2> <core3d:verticalgeometryestimatedaccuracy uom="urn:ogc:def:uom:ogc:1.0:metre"> 0.2 </core3d:verticalgeometryestimatedaccuracy> </core3d:buildinggeometry3dmetadatalod2> </core3d:geometry3dmetadatalod2> INSPIRE Building attribute (here: height accuracy)... to be continued on next slide T. H. Kolbe INSPIRE 2D und 3D Was kommt da auf uns zu? 18

19 Example Data Set in CityGML Core3D ADE (3) <core3d:elevation> <core3d:elevation> <core3d:elevationreference> lowestground </core3d:elevationreference> <core3d:elevationvalue srsname="urn:ogc:def:crs:epsg::5783" srsdimension="1 uomlabels="urn:ogc:def:uom:ogc:1.0:metre"> </core3d:elevationvalue> </core3d:elevation> </core3d:elevation> INSPIRE Building attribute (here: elevation of the lowest ground point of the building)... further elevation values to be continued on next slide T. H. Kolbe INSPIRE 2D und 3D Was kommt da auf uns zu? 19

20 Example Data Set in CityGML Core3D ADE (4) <core3d:heightaboveground> <core3d:heightaboveground> <core3d:value uom="urn:ogc:def:uom:ogc:1.0:metre"> </core3d:value> <core3d:heightreference> topofconstruction </core3d:heightreference> <core3d:lowreference> lowestground </core3d:lowreference> <core3d:status>measured</core3d:status> </core3d:heightaboveground> </core3d:heightaboveground> INSPIRE Building attribute (here: difference between elevation at ground level and at top of construction)... to be continued on next slide T. H. Kolbe INSPIRE 2D und 3D Was kommt da auf uns zu? 20

21 Example Data Set in CityGML Core3D ADE (5) <core3d:conditionofconstruction nilreason="unpopulated"/> <core3d:inspireid> <base:identifier> <base:localid>deby_lod2_ </base:localid> <base:namespace> </base:namespace> </base:identifier> </core3d:inspireid> <core3d:beginlifespanversion> T00:00:00Z </core3d:beginlifespanversion> INSPIRE Building attributes (here: condition of the construction, identifier, begin of object lifespan) </bldg:building> </cityobjectmember> end of the building object T. H. Kolbe INSPIRE 2D und 3D Was kommt da auf uns zu? 21

22 Visualisation with the FME Data Inspector T. H. Kolbe INSPIRE 2D und 3D Was kommt da auf uns zu? 22

23 Visualisation with the Aristoteles Viewer Geobasisdaten Bayerische Vermessungsverwaltung 2013 T. H. Kolbe INSPIRE 2D und 3D Was kommt da auf uns zu? 23

24 Conclusion The CityGML ADE mechanism enables the INSPIRE Data Specification on Buildings and the CityGML standard to be used in an interchangeable way The use of CityGML as alternative transfer format to the native INSPIRE encoding provides several advantages: INSPIRE buildings data can be identified and processed by currently available CityGML software Through the CityGML ADE mechanism INSPIRE buildings data can be combined with other CityGML extensions The extension is formally specified, which allows to validate CityGML data both against the CityGML and the ADE schema INSPIRE buildings data can at any time directly be derived from CityGML data Don t wait start now! G. Gröger, T. Kutzner, T. H. Kolbe A CityGML-based encoding for INSPIRE Buildings 24