DE Conferentie 2004 Julien Noel

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  • 1. 3D volume digitization and visualization DIGISENS S.A. BP 278 Savoie Technolac 73375 Le Bourget-du-Lac Cedex-France Tel :+33(0)4 79 65 89 16 email : info@digisens.fr www.digisens.fr/museo Applications in Cultural Heritage Julien NOEL
  • 2. DIGISENS S.A. BP 278 Savoie Technolac 73375 Le Bourget-du-Lac Cedex-France Tel :+33(0)4 79 65 89 16 email : info@digisens.fr www.digisens.fr/museo DIGISENS Software development for microCT and CT applications : - Calibration software - 3D Reconstruction software - 3D Volume and surface rendering / analysis software 3D CT and microCT solution provider for : - industries - universities - museum’s laboratories Winner of the European IST Prize (Information Society Technology) : www. ist -prize.org First prize of the 2004 SITEM Innovation Award (International Show of Museographical and Heritage-oriented Technology)
  • 3. 3D Micro Computed Tomography Principle Acquisition Reconstruction Visualization
  • 4. 3D Micro-CT (Micro Computed Tomography) is a non destructive X-ray technique for internal expertise and volume digitization. Definition
    • Advantages :
      • Volume digitization (volumical data)
      • Complete digitization of entire objet, without shaded zone
      • Compatible with all material, even black, brillant and transparent surfaces
      • Non deteriorative scanning
      • High precision (0,005 mm)
      • Fast digitizing (1 hour / object)
      • Density segmentation
      • Real time visualisation
    • Drawbacks :
    • Size limitation
    • No color
  • 5. 3-D Computed Tomography X-Ray technology Digital detector microCT : Microfocus X-Ray tube
  • 6. Principle
  • 7. 360 digital radiographs Cone-Beam reconstruction Volume rendering (voxels)
  • 8. Radiography X Tomography X 2D slice 3D rendering Tomography X
  • 9.
    • Back projection x =   A  -1 b
    • Computed Tomography reconstruction
    2 4 8 16 36 90
  • 10.
    • e.g Ramp filter
    • Filtered Back Projection
  • 11. 3D digitization and visualisation using microCT, for Museums & Research Centers applications Some examples of 3D digitization with 3D CT technology and volume rendering software
  • 12. Surface scanning Structured light Laser scanning Multi-spectral
    • Drawbacks :
    • No internal information
    • Slow process
    • Low details
    • Shaded zones
    • Can’t work with black, bright or transparent surface
  • 13. Human skulls with 3D CT scanning
  • 14. Human skull
  • 15. Closed wooden box : how to discover internal and invisible objects
  • 16. Real Picture 3D rendering (possibility to apply mapping textures) Grenoble Museum’s collection African sculpted box. MHNGr.1979.633
  • 17. African sculpted box. MHNGr.1979.633 The internal view with transparency of the wood reveals shellfishes, plants and grains. In fact it seems to be a shellfish necklace. Shellfish virtual extraction by selection of an expected range of density. 3D virtual cross-section to discover the inner objects Grenoble Museum’s collection
  • 18. Talisman : discover all about mysterious objects
  • 19. Lyon Museum’s collection Talisman from Madagascar External volumical view of an african talisman Segmentation of high density components : 3D view of the hook and dicovery of a pearl. 2D high resolution CT slices of the pearl and the hook
  • 20. Talisman from Madagascar Lyon Museum’s collection 3D surface rendering of the hook and the pearl : detailed views and transparent rendering
  • 21. Paleolagus Fossil : how to virtually extract bone from stone
  • 22. Grenoble Museum’s Collection Paleolagus haydeni, Wyoming (USA), oligocène. Digitalization and 3D volume rendering of a 35 million years fossil. The aim of microCT scanning is here to study the skull by virtually removing the stone.
  • 23. Paleolagus haydeni, Wyoming (USA), oligocène. Grenoble Museum’s Collection Virtual extraction of the bone and real time 3D visualization
  • 24. Hornet Very high resolution digitalization applied to insects – internal 3D anatomy analysis.
  • 25.  
  • 26.  
  • 27. Rodent : classification of the animal by studying internal teeth
  • 28. 3D real time cross sections of the teeth to determine the specie Grenoble Museum’s collection After comparison with literature schemes, we can classify the specie : this rodent is an Arvicola terrestris
  • 29. Ostracod fossil Real size 2mm Rabbit’s bone Junon – Le Louvre
  • 30. Computed Tomography of a small clay pompeian head CT of a cat shaped coffin CT and reconstruction made by University of Bologna, Physics department A cat mummy exposed at the Egyptian section of the City Museum of Bologna It is possible to see the rest of a cat skeleton without opening the coffin.
  • 31. Human Mandible and teeth
  • 32. VisioFURL
    • 3D volumical visualization & media for :
    • Museum Exhibitions
    • Pedagogical courses
    • Libraries & Database
  • 33. Integration of 3D models into an interactive interface for presentation (exposition) and pedagogy. VisioFurl
  • 34.  
  • 35. Research (internal discoveries, fabrication process analysis, species determination …) Conservative / restorative applications (classification, volume digitalisation of cultural heritage, conservation, restorative applications …) Exposition (popularisation, demonstration, 3D libraries and database …) Museums & Research Centers applications
  • 36.
    • How to implement 3D Computed Tomography digitization in Museums, Research laboratories, Universities, or Industries:
    • Install complete CT and/or microCT equipment with software for scientific analysis (volume rendering) and real time 3-d visualisation (surface/volume rendering)
    • Rent a CT/µCT equipment for weeks or months in situ
    • Upgrade any radiographic equipment for 3D CT capabilities
  • 37. Julien NOEL DIGISENS S.A. 12 allée du Lac de Garde BP 278 - Savoie Technolac 73375 Le Bourget du Lac Cedex Tel : +33 (0)4 79 65 89 16 Mobile : 33 (0)6 86 61 55 13 e-mail : julien.noel@digisens.fr www.digitalscanservice.com DIGISENS S.A. BP 278 Savoie Technolac 73375 Le Bourget-du-Lac Cedex-France Tel :+33(0)4 79 65 89 16 email : info@digisens.fr www.digisens.fr/museo Thanks for your attention