archiving 3d architectural models
DESCRIPTION
Presentation on the archiving of 3D architectural models, November 11th, 2009 for SIMIN, NetherlandsTRANSCRIPT
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Preservering van born digital 3D modellen
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0_Inhoud
• NAi collecties en acquisitie
• Preservation strategy
• Case study Van Abbemuseum / Cahen
• Conclusies
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1_NAi collecties
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1_Digitale content
Digitalisering analoog archief
• Beeldbestellingen
• Digitaliseringsprojecten
• Massadigitalisering
Born digital archieven
• Legacy archieven
• Nieuwe aanwinsten
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1_Digitale content
Digitalisering analoog archief
• Beeldbestellingen
• Digitaliseringsprojecten
• Massadigitalisering
Born digital archieven
• Legacy archieven
• Nieuwe aanwinsten
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1_Born digital archieven
• Hybride: analoog/digitaal
• Proprietary formaten
• Oude dragers, hardware ontbreekt
• Ordening onduidelijk, geen selectie
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1_Bureau enquête
• Software: divers maar mainstream
• Weinig problemen met software transitie
• Wijzigingen in OS, soft- en hardware niet gedocumenteerd
• Geen verversing van dragers
• Geen migratie van formaten
• Geen open standaarden
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2_Probleemstelling
• Waar objecten en metadata opslaan ?
• Wat bewaren ?
• Hoe duurzaam bewaren ?
• Hoe gegevens in presenteren ?
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3_Architectuur
[content metadata]
www
[digital objects][preservation
metadata]
[digital objects][content metadata]
[ugc]
XML
CIS eDepot
ArchiVista
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4_Preservation strategy
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4_Preservation strategy
Welke informatie bewaren?
• Intellectuele inhoud
• Look & Feel
• Functionaliteit
• Authenticiteit / Integriteit
• Hardware / software omgeving
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4_Preservation strategy
Basisprincipes
• Intellectuele inhoud primeert
• Geen computer museum
• Functionaliteit is onbelangrijk
• Gebruik (open) standaarden
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4_Preservation strategy
Concreet• Duplicaten en afgeleiden verwijderen
• Origineel bestand bewaren as is
• Origineel bestand identificeren
• Migreren naar preservation format(s)
• Migreren naar raadplegings formaat
• Bewaar preservation metadata
• Veilige opslag
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5_Case: Van Abbemuseum
• Ca. 1994
• Windows 3.1
• AutoCAD
• Floppy 3.5
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5_Data carriers Cahen archief
• Verouderde dragers
– hard drives, Iomega-zip, 5.25 floppy, 3.5 floppy, cd-r, bernouilli, laser disks, ...
• Onleesbare data
• Onbekende formattering:
– IBM-PC, Atari, Commodore Amiga, Apple II, Apple Mac,...
– Low vs. High density
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5_Formaten identificeren
• Welk OS ?
• Welke software ?
• Welke versie ?
• Backwards compatible ?
• Welke viewers / converters ?
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5_Formaten identificeren
• Pronom database
• DROID
• JHOVE
• FITS
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5_Identificeren: DROID
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5_Identificeren: Pronom
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5_Inlezen: AutoCAD 2008
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5_Inlezen: Rhino
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5_Inlezen: DWG Viewer
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5_Inlezen: ArchiCAD
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5_Inlezen: ArchiCAD
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5_Interpreteren
• Output documents
• Perspectief
• Gekoppelde bestanden
• Renderings en gekoppelde textures
• Layers
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5_Interpreteren: layers
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5_Archiveringsformaat
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5_Archiveringsformaat
• IGES, STEP, DXF, OpenDWG, PDF, PDF/A, X3D, SVG, COLLADA, ...
• Toekomstige ontwikkelingen ?
• Niet alle features ondersteund
• Vertalers ontbreken in software
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6_Presentatieformaat
• Raster image, vector based, embedded, proprietary, movie, webservice
• Browser compatibel
• Plugins
• Informatieniveau
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6_Raster image: JPG
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6_MPEG
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6_DWF in IE
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6_DWF in Freewheel
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6_Sketchup
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6_GoogleEarth
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7_Conclusies
• Preservering start bij creatie
• Nood aan archiveringsstandaard
• Nood aan open presentatiestandaard
• Nood aan software & hardwaremuseum
• Technology watch
• Informatieverlies in onvermijdelijk
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Digitaliseringsbeleid NAi 37
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