Augmented Reality for Building and Construction (AR4BC)

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1 Project summary Augmented Reality for Building and Construction (AR4BC) Charles Woodward, VTT Introduction Background Building Information Models (BIM) and 4D models are increasingly used for data sharing and communication purposes in real estate and construction sector Augmented Reality (AR), and more generally Mixed Reality (MR), is enabling new kind of interaction with virtual building models at real environments Finland is one of the leading countries in BIM adoption, and VTT leading research institute in BIM / AR development for construction industry Objectives To provide mobile AR (MR) tools linking real situation at construction site to BIM information, planning and follow-up Combining top-level technology and know how from VTT s two knowledge centres and partner companies into novel world class solutions and products 1

2 Applications Augmented on-site visualisation (Augmented Reality) linking project plans with actual situation on site determine already installed and missing parts, those to be installed next display part information, tolerances, weight, other measures display ready building before and during construction also, indoors applications for sales presentation Augmented site journaling (Augmented Virtuality) feedback to system: sign (tag) installed parts in 4D model attach images to 4D model, with links to the parts they show construction log book, for communication between parties tool for building inspector during and after construction augmented 4D models, incl. virtual walk-though inside BIM model Augmented Reality + Augmented Virtuality = Mixed Reality Technology Augmenting / tracking vision based tracking, matching with 4D model (orientation) combined with GPS and map information (position) Interactive, hybrid and other tracking methods as required Interaction with BIM models wireless 4D BIM model interaction methods, client / server solutions retrieval and feedback of model data, inclusion of image data Visualisation on mobile devices conversions from BIM to visualisation, e.g. OSG 3D graphics on mobile devices, e.g. visibility culling, LOD Hardware hand held / wearable PCs, miniature cameras optional data glasses (video or optical), accelerometer, compass wireless solutions, robustness, weight, power consumption, price with view on camera phones, client/server solutions 2

3 Specs (1/3) Server software 4D Studio, ARServer formats IFC (VTT s own parser), OSG (incl. VRML, 3DS, etc.) creation of scheduled 4D model (MS Project + 3D model) 4D visualization, e.g. timeline, clipping, transparency etc. interaction with colors, materials, textures, lighting etc. nd-properties: elements, wall, electricity, pipings, etc. (basic implementation) producing 4D/nD view from selected viewpoint, provided by mobile client transmitting selected model parts (according to time, distance) to mobile client attaching mobile feedback to 4D model: photos, reports, comments, visualization of augmented 4D model by different means Specs (2/3) Mobile software / exteriors AROutSide, ARClient matching camera view to 4D model based on model / feature based tracking additionally GPS, compass, accelerometer, user interaction photorealistic visualization: lighting, masking downloading 4D model (view) from server for tracking purposes downloading 4D model (view) from server for visualization (incl., visibility culling, LOD) functionality: e.g.. Show model / nd features at time X, beteween X-Y, after Y measurements, discrepancy checking btw real and virtual model feedback to server, e.g. element installed / missing / fault, photo / comment possible safety-, training- and life cycle applications as side result efficiency considerations: e.g. still-image principle vs. real time video hand held PC (-> camera phone & data glasses) WLAN & 3G data transmission 3

4 Specs (3/3) Mobile software / interiors ARInSide simplified version of AROutSide markerless tracking based on 3D model of room viewing and instaling elements based on 3D model visualizing elements e.g. behind walls, ceilings etc. interaction properties: selecting and moving parts, etc. other properties: storing video and still images equipment: hand held PC (& data glasses) also, miniature projectors -> X-ray vision WLAN data transmission (if required) Other tasks Specifications software architecture, data formats, tasks, time tables Demonstrations ja user tests Skanska new Helsinki head offices / ready building Skanska new Helsinki head offices / during construction Finnish pavillion at Sanghai World Expo 2010 other demonstrations, TBD comparisons, equipment, display devices, user interfaces demonstrations with commercial applications (Tekla, Buildercom) Other patent research hardware research, new equipmen, data glasses etc. Interational co-operation scientific publications disemination 4

5 Partners VTT Digital Information Systems Charles Woodward (project manager), Mika Hakkarainen, Petri Honkamaa, Otto Korkalo, Sanni Siltanen, Kari Rainio, Tatu Harviainen, Miikka Aittala VTT Materials and Building Kalle Kähkönen, Janne Porkka Companies vertical representation of Finnish B&C sector, software, users Tekla, Skanska, Pöyry, Buildercom, DeskArtes, Adactive Tekes Finnish Funding Agency for Technology and Innovation International co-operation project co-operation, joint workshops, researcher exchange Labein Tecnalia (Spain), TU Munchen (Germany), Fraunhofer IGD & ZGDV (Germany) Contact Prof. Charles Woodward tel Videos and Demos availabe at: 5