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GeoBIM development presentation on 3D geoinfo Berlin 2010


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Presentation of the GeoBIM development at 3D Geoinfo conference 2010 Berlin.

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GeoBIM development presentation on 3D geoinfo Berlin 2010

  1. 1. Léon van Berlo & Ruben de Laat BIM and GIS: GeoBIM ADE for CityGML
  2. 2. Work of a BIM/IFC team:
  3. 3. Observation: Where BIM and GIS can learn from each other
  4. 4. Comparing GIS and BIM  (City)GML and IFC <ul><li>BIM-world: </li></ul><ul><li>Intense 3D geometry (CSG, Brep, etc) using IFC </li></ul><ul><li>Highly detailed models (semantics) </li></ul><ul><li>Focus on file exchange </li></ul><ul><li>Focussing above surface objects </li></ul><ul><li>Typically for modelling new buildings </li></ul><ul><li>Geo-world: </li></ul><ul><li>Focus on server based (central / webservices) </li></ul><ul><li>‘ starting’ 3D (CityGML) </li></ul><ul><li>Focussing on areas (x,y) </li></ul><ul><li>Typically for modelling existing data </li></ul>
  5. 5. Previous work on IFC and CityGML interoperability
  6. 6. Differing Modeling Paradigms V olumetric, parametric primitives representing the structural components of buildings BIM (e.g., IFC) Constructive Solid Geometry Accumulation of observable surfaces of topographic features 3D GIS (e.g., CityGML) Boundary Representation (C) slide from: Thomas H. Kolbe - joint work with Claus Nagel & Alexandra Stadler
  7. 7. (C) slide from: Karl-Heinz Häfele - KIT
  8. 8. Past work <ul><li>Mostly focussed on conversion of geometry </li></ul><ul><li>Mostly focussed on down-grading IFC to lower LOD’s CityGML </li></ul><ul><li>Interest for the rich (3D) semantics of IFC; but mostly as input to create city-models </li></ul><ul><li>Our challenge: </li></ul><ul><li>Extending CityGML with the rich semantics of IFC </li></ul><ul><li>(and getting IFC data on a central server) </li></ul>
  9. 9. WHY? (use cases for a GeoBIM-extension)
  10. 10. Why we want to do this?! <ul><li>A lot of possibilities: Energy assessment; Space management; Structural analysis; Piping and wiring; Foundations; Tunnels; Sewers; OWS-4; etcetera.… </li></ul><ul><li>Read the paper for the official statement… but in reality we just thought it would be cool! </li></ul><ul><ul><li>Or in a nice word: possibility push </li></ul></ul>
  11. 11. The development of the GeoBIM-extension
  12. 12. The IFC classes to squeeze in the ADE: <ul><li>IfcAnnotation </li></ul><ul><li>IfcBeam </li></ul><ul><li>IfcBuilding </li></ul><ul><li>IfcBuildingElementComponent </li></ul><ul><li>IfcBuildingElementPart </li></ul><ul><li>IfcBuildingElementProxy </li></ul><ul><li>IfcBuildingStorey </li></ul><ul><li>IfcChamferEdgeFeature </li></ul><ul><li>IfcColumn </li></ul><ul><li>IfcCovering </li></ul><ul><li>IfcCurtainWall </li></ul><ul><li>IfcDiscreteAccessory </li></ul><ul><li>IfcDistributionChamberElement </li></ul><ul><li>IfcDistributionControlElement </li></ul><ul><li>IfcDistributionElement </li></ul><ul><li>IfcDistributionFlowElement </li></ul><ul><li>IfcDistributionPort </li></ul><ul><li>IfcElectricalElement </li></ul><ul><li>IfcElectricDistributionPoint </li></ul><ul><li>IfcElementAssembly </li></ul><ul><li>IfcEnergyConversionDevice </li></ul><ul><li>IfcEquipmentElement </li></ul><ul><li>IfcFastener </li></ul><ul><li>IfcFooting </li></ul><ul><li>IfcGrid </li></ul><ul><li>IfcMechanicalFastener </li></ul><ul><li>IfcMember </li></ul><ul><li>IfcOpeningElement </li></ul><ul><li>IfcPile </li></ul><ul><li>IfcPlate </li></ul><ul><li>IfcProjectionElement </li></ul><ul><li>IfcProxy </li></ul><ul><li>IfcRailing </li></ul><ul><li>IfcRamp </li></ul><ul><li>IfcRampFlight </li></ul><ul><li>IfcReinforcingBar </li></ul><ul><li>IfcReinforcingMesh </li></ul><ul><li>IfcRoof </li></ul><ul><li>IfcRoundedEdgeFeature </li></ul><ul><li>IfcSite </li></ul><ul><li>IfcSlab </li></ul><ul><li>IfcSpace </li></ul><ul><li>IfcStair </li></ul><ul><li>IfcStairFlight </li></ul><ul><li>IfcStructuralCurveConnection </li></ul><ul><li>IfcStructuralCurveMember </li></ul><ul><li>IfcStructuralCurveMemberVarying </li></ul><ul><li>IfcStructuralLinearAction </li></ul><ul><li>IfcStructuralLinearActionVarying </li></ul><ul><li>IfcStructuralPlanarAction </li></ul><ul><li>IfcStructuralPlanarActionVarying </li></ul><ul><li>IfcStructuralPointAction </li></ul><ul><li>IfcStructuralPointConnection </li></ul><ul><li>IfcStructuralPointReaction </li></ul><ul><li>IfcStructuralSurfaceConnection </li></ul><ul><li>IfcStructuralSurfaceMember </li></ul><ul><li>IfcStructuralSurfaceMemberVarying </li></ul><ul><li>IfcTransportElement </li></ul><ul><li>IfcVirtualElement </li></ul><ul><li>IfcFurnishingElement </li></ul><ul><li>IfcWall </li></ul><ul><li>IfcWallStandardCase </li></ul><ul><li>IfcWindow </li></ul>
  13. 13. The GeoBIM (IFC) ADE <ul><li>Extending Room, Window, Door, Opening, Buildingfurniture, BuildingInstallation, IntBuildingInstallation, Building and BuildingPart with extra (IFC)-properties. </li></ul><ul><li>Extending “_AbstractBuilding” with extra properties </li></ul><ul><li>Extending “_AbstractBuilding” with extra classes (and prop.) </li></ul><ul><li>Focus on adding details (in stead of downscoping) </li></ul><ul><li>Thought of adding a LOD5 (didn’t do it because of viewer comp.) </li></ul>
  14. 14. The schema
  15. 15. Prototype implementation of the GeoBIM-extension
  16. 17. Prototype testing
  17. 21. Discussion & conclusion
  18. 22. Issues <ul><li>Still not solved the geometry issues </li></ul><ul><li>Not displaying ADE geometry in LandExplorer (?!) </li></ul><ul><li>File size issues (detailed geometry in XML just doesn’t work out) </li></ul><ul><li>No network structure in CityGML (like piping)  next version </li></ul><ul><li>Lot of different ways to link objects in IFC (no hierarchy) </li></ul><ul><li>CityGML4j not supporting everything we want (and shouldn’t because this was never the intention…) </li></ul><ul><li>A long way to go for the AEC industry uses central servers.... </li></ul>
  19. 23. Future work and ambitions
  20. 24. Future ambitions <ul><li>Keep extending the ADE: </li></ul><ul><ul><li>Get a ‘solid’ for a set of wallsurfaces into CityGML </li></ul></ul><ul><ul><li>Get materialinfo about wallsurfaces into CityGML </li></ul></ul><ul><ul><li>Solve geometry issues (IFC 2x4) </li></ul></ul><ul><ul><li>… .. </li></ul></ul><ul><li>Or maybe even: </li></ul><ul><ul><li>Link to AR applications </li></ul></ul><ul><ul><li>Progress on the UBER-viewer </li></ul></ul>
  21. 25. More info: <ul><li> </li></ul><ul><li> </li></ul><ul><li> </li></ul><ul><li>Try for yourself! (but charge yourself for a challenge) </li></ul>
  22. 26. <ul><li>[email_address] </li></ul><ul><li>twitter: @berlotti </li></ul><ul><li>skype: berlotti </li></ul>