Lidar can only do so much with CityGML. I believe BIM should be an input to produce CityGML models.

1. CITYGML AND BIM
same same but different | Léon van Berlo

10. Volumetric, solid geometry,
(parametric) primitives representing
the structural components of buildings
IfcWallStandardCase
IfcBeam
IfcSlab
IfcWindow
Accumulation of observable surfaces
of topographic features
WallSurface
InteriorWallSurface
FloorSurface
IntBuildingInstallation
GroundSurface
Window
(C) slide from: Thomas H. Kolbe - joint work with Claus Nagel & Alexandra Stadler

11. IfcAnnotation
IfcBeam
IfcBuilding
IfcBuildingElementComponent
IfcBuildingElementPart
IfcBuildingElementProxy
IfcBuildingStorey
IfcChamferEdgeFeature
IfcColumn
IfcCovering
IfcCurtainWall
IfcDiscreteAccessory
IfcDistributionChamberElement
IfcDistributionControlElement
IfcDistributionElement
IfcDistributionFlowElement
IfcDistributionPort
IfcElectricalElement
IfcElectricDistributionPoint
IfcElementAssembly
IfcEnergyConversionDevice
IfcEquipmentElement
IfcFastener
IfcFooting
IfcGrid
IfcMechanicalFastener
IfcMember
IfcOpeningElement
IfcPile
IfcPlate
IfcProjectionElement
IfcProxy
IfcRailing
IfcRamp
IfcRampFlight
IfcReinforcingBar
IfcReinforcingMesh
IfcRoof
IfcRoundedEdgeFeature
IfcSite
IfcSlab
IfcSpace
IfcStair
IfcStairFlight
IfcStructuralCurveConnection
IfcStructuralCurveMember
IfcStructuralCurveMemberVarying
IfcStructuralLinearAction
IfcStructuralLinearActionVarying
IfcStructuralPlanarAction
IfcStructuralPlanarActionVarying
IfcStructuralPointAction
IfcStructuralPointConnection
IfcStructuralPointReaction
IfcStructuralSurfaceConnection
IfcStructuralSurfaceMember
IfcStructuralSurfaceMemberVarying
IfcTransportElement
IfcVirtualElement
IfcFurnishingElement
IfcWall
IfcWallStandardCase
IfcWindow

12. GEOBIM ADE
Extending Room, Window, Door, Opening, Buildingfurniture,
BuildingInstallation, IntBuildingInstallation, Building and BuildingPart with
extra (IFC)-properties.
Extending “_AbstractBuilding” with extra properties
Extending “_AbstractBuilding” with extra classes (and prop.)
Focus on adding details (in stead of downscoping)
Thought of adding a LOD5 (didn’t do it because of viewer comp.)

13. PROTOTYPE
First version in 2009 (geometry issues)

14. CONCLUSIONS
Still not solved the geometry issues
(Still) no real applications in practise
File size issues (detailed geometry in XML just doesn’t work out)
Current version is better, but no one uses it, so not supported any longer
Still a lot of focus on geometry and ‘viewing’
So……

17. THE LINKS
https://vimeo.com/12462613
http://bimserver.org/wp-content/uploads/sites/6/2010/11/Berlo-
Laat_3Dgeoinfo-GeoBIM_ADE.pdf
http://www.slideshare.net/berlotti/3d-imro-en-bim
https://scholar.google.nl/scholar?oi=bibs&hl=nl&cluster=10671815151076712
718
http://bimserver.org/2016/08/30/bim-and-gis-integration/
https://gist.github.com/berlotti/510acc0503984ef8a9ec184f6b8d16cb
https://github.com/opensourceBIM/CesiumLoader

18. THANK YOU FOR YOUR ATTENTION
Take a look:
TIME.TNO.NL