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Domitilla Catacomb Walkthrough

Domitilla Catacomb Walkthrough. Claus Scheiblauer. Institute of Computer Graphics and Algorithms Vienna University of Technology. Complete Domitilla Model. Outline. Scanopy – Point Rendering and Editing Software Domitilla Catacomb Model Demonstration Conclusion. Outline.

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Domitilla Catacomb Walkthrough

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  1. Domitilla Catacomb Walkthrough Claus Scheiblauer Institute of Computer Graphics and Algorithms Vienna University of Technology

  2. Complete Domitilla Model Claus Scheiblauer

  3. Outline • Scanopy – Point Rendering and Editing Software • Domitilla Catacomb Model • Demonstration • Conclusion Claus Scheiblauer

  4. Outline • Scanopy – Point Rendering and Editing Software • Domitilla Catacomb Model • Demonstration • Conclusion Claus Scheiblauer

  5. Point Model Processing Pipeline Scanner Software (RiscanPro, ...) Aquiring Points Registering Points Coloring Points Set of Registered andColored Points Claus Scheiblauer

  6. Point Model Processing Pipeline Set of Registered andColored Points Scanopy Application Remove Outliers Mergeseveral Scans to a Composed Model View and Edit Composed Model Claus Scheiblauer

  7. Scanopy Application Capabilities • Fast elimination of outliers • Merging of single scans to a composed model • Basic editing operations on the composed model • Define camera paths • “Unlimited” model size • Concurrent display of polygon based models and point based models Claus Scheiblauer

  8. Scanopy Application Capabilities • Most useful during a scan campaign • Can provide an overview of already scanned areas • Quality of the models is limited, because no post processing is done • Work in progress… Claus Scheiblauer

  9. Data Structure • Sophisticated data structure (NestedOctree) • Optimized for rendering on GPU • Multi-threading, Out-of-Core, Caches, Levels-of-Detail Claus Scheiblauer

  10. BuildUp • Out-of-core • Points areinsertedone-by-one • Least RecentlyUsed (LRU) cachetotakeadvantageofspatialcoherency • BuildUpalgorithmisscaleable • Performance increaseswithavailablememory Claus Scheiblauer

  11. BuildUp A InnerOctree B C OuterOctree InnerOctree InnerOctree Claus Scheiblauer

  12. BuildUp • OuterOctreeswappedpartiallytodisk • LRU cachedecideswhichnodesareswapped Claus Scheiblauer

  13. Elimination of Outliers • Interactive definition of a clipping box Claus Scheiblauer

  14. Selection • Brush follows surface of the model Claus Scheiblauer

  15. Dynamic Point Size • Estimate a closed surface on scanned objects Point Size 1 pixel Dynamic Point Size Claus Scheiblauer

  16. Scanopy • Scanopy – Point Rendering and Editing Software • Domitilla Catacomb Model • Demonstration • Conclusion Claus Scheiblauer

  17. Domitilla Catacombe Model • START project „Domitilla Katakombe in Rom“ • Scanned during severalcampaigns (currently 8 finished) • Model consists of 1.21 billion points • 1121 scan positions • 19.5 GB of data on disk • Colored within 4 days using 3 computers • 2h 45min to build up the model Claus Scheiblauer

  18. Scanopy • Scanopy – Point Rendering and Editing Software • Domitilla Catacomb Model • Demonstration • Conclusion Claus Scheiblauer

  19. Demonstration • Laptop with 2GHz Intel Core2 Duo processor • 2GB RAM • Nvidia GeForce 8600M GT graphics processor with 256MB VRAM • 5400RPM hard disk Claus Scheiblauer

  20. Scanopy • Scanopy – Point Rendering and Editing Software • Domitilla Catacomb Model • Demonstration • Conclusion Claus Scheiblauer

  21. Conclusion • Software for creating, viewing and editing very large point based models • Work in progress • Walk through a model of the DomitillaCatacombe consisting of more than 1 billion points • More edit operations are future work Claus Scheiblauer

  22. Thanks! • FFG Project “Scanopy” • FWF START Project “Domitilla Katakombe in Rom” • TUW-ILScan Project • WWTF Project “LEOPOLD” Claus Scheiblauer

  23. The End Institute of Computer Graphics and Algorithms Vienna University of Technology

  24. Light Background Slides • The standard color scheme is light background with dark text – it must be used by default • Select “Format / Slide Design…” and “Color Schemes” on the right side panel • By right-clicking on a color scheme you can apply it to the current slide Claus Scheiblauer

  25. Motivation • The quick brown fox jumps over the lazy master • The quick brown fox jumps over the lazy dog • The quick brown master jumps over the lazy dog Claus Scheiblauer

  26. Outline • The quick brown fox jumps over the lazy dog • The quick brown fox jumps over the lazy master • The quick brown fox jumps over the lazy dog • The quick brown fox jumps over the lazy dog • The quick brown fox jumps over the lazy master • The quick brown fox jumps over the lazy dog Claus Scheiblauer

  27. Conclusions • The quick brown fox jumps over the lazy dog • The quick brown master jumps over the lazy dog • The quick brown fox jumps over the lazy dog • The quick brown master jumps over the lazy dog • The quick brown fox jumps over the lazy dog Claus Scheiblauer

  28. Selection Octree • Enables selection in a LOD data structure Claus Scheiblauer

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