Vortrag Pergamonmuseum Berlin

Colonia3D Ma*hias Trapp, Amir Semmo, Jürgen Döllner

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AGENDA 1. INTRODUCTION 2. 3D RECONSTRUCTION 3. INTERACTIVE RENDERING

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SECTION

INTRODUCTION

WWW.COLONIA3D.DE

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GOALS & CHALLENGES Goals  Virtual reconstruc6on using polygonal 3D models  Real-­‐6me rendering of 3D reconstruc6on  Concept for romano-­‐germanic museum (RGM) Challenges  Meet requirements of archeologists  Meet requirements of museums visitors  Implementa6on of interac6ve visualiza6on 5

SECTION

MANUAL 3D RECONSTRUCTION

WORKFLOW Archaeologists  2D AutoCAD drawings  Meta data (text & images) Designer  3DSmax & mental ray  Exhibi6on concept CG engineer  Customize rendering framework  Model op6miza6on 7

3D BUILDING RECONSTRUCTION

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DETAILS

Reconstructed capital, 1:1 model from Xanten

Virtual reconstruction without textures 9

APPLICATIONS: 3D PRINTER

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APPLICATIONS: MOVIE SCENERY

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TWO LEVELS-­‐OF-­‐DETAIL

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3D SCENE -­‐ OVERVIEW

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DIGITAL TERRAIN MODEL

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APPEARANCE = LIGHTING + TEXTURE

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SECTION

INTERACTIVE RENDERING

DATA COMPLEXITY – BOTTOMLINE Scene StaSsScs (total):  # Models: 420  # Ver6ces: 15,793,008  # Faces: 21,424,732  # Texel: 1,320,041,992 (4 GB)  data too complex for real-­‐Sme visualizaSon on consumer hardware

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OPTIMIZATIONS FOR REALTIME

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DRAWBACKS OF OPTIMIZATION TEXTURE ATLAS

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APPLICATIONS FOR VIRTUAL 3D MODELS

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SECTION

ROMANO-­‐GERMANIC MUSEUM

BASIC QUESTIONS Major challenges  How to create an “experience”?  3 visualiza6on scenarios  How to display meta data?  Integrated vs. mul6ple views  How to support the user?  Make use of modern hardware

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SETUP OVERVIEW

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PROJECTION

SERVER

TOUCH TABLE

3 PRESENTATION SCENARIOS

CLIENT 24

RECONSTRUCTION SCENARIO

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FINDING SCENARIO ObjecSve  Display finding in the context of reconstruc6on  Enable browsing of findings  Highligh6ng of objects-­‐of-­‐interest PresentaSon Style  Plain colors + Gooch Shading  Unsharp masking the depth buffer 26

FINDING SCENARIO

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SUPPORTING MULTIPLE

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SUPPORTING MULTIPLE EXCAVATION

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COMPARISON SCENARIO

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AQUIRING PANORAMIC IMAGES

By manual image aquisiSon & image sStching (Photoshop CS3)

By using rendering output directly (Trapp&Döllner GRAPP 2008) 31

3D INTEGRATION

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SUPPORTING THE USER IN 3D Why

Computed parabolic camera path

 Avoid „ge_ng lost“ situa6ons  Support easy explora6on of sites

Approaches  Explicit collision model for physics engine  Constraint orbiter camera  Automa6c camera path genera6on  Dedicated „Home“ scenario 33

SECTION

CONCLUSIONS

LESSONS LEARNED AIer 4 year development and 7 months up-­‐Rme:  Distributed, interdisciplinary development is costly  3D reconstruc6on: mulRple iteraRons required  Add scale elements  Test and tune the applica6on and setup off-­‐site early  Acquiring robust hardware

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POTENTIAL FOR FUTURE WORK Make it be*er  Link to the tangible assets of museum  Include high-­‐detail findings  Conduct user evalua6on  Indoor visualiza6on, explora6on and naviga6on Make it available  Accessible via web using WPVS  Providing the framework for other ci6es  Licensing the model to the community 36

WRAP UP    

Interac6ve museum applica6on of a complete city Now permanent exhibi6on at the RGM Extensible real-­‐6me visualiza6on framework Poten6al for future work

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ACKNOWLEDGMENTS Special thanks to the team

Johannes Bäuerlein, Henner von Hesberg, Fabian Kampa, Simone Lamberts, Janine Lehmann, Chris6an Leuenhagen, Stefan Maass, Silvio Mölter, Sebas6an Heilmann, Annehe Paetz, Chris6an Rademann, Christopher von Bronsart, Michael Hoffmann, Solveig Böhl, Yu-­‐Chung Chen, Su Hyung Han, Enricheha Minuzzi, Bierschenk Mar6n, Sascha Blähgen, Omar Gerado Chacòn Yela, Benjamin Jager, Sven Aufenvenne, Mar6n Kramer, Benjamin Richter, and Leif Rumbke.

Contact

mahhias.trapp@hpi.uni-­‐potsdam.de 38

THANK YOU… QUESTIONS -­‐

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