Notes
Slide Show
Outline
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Assembling the Sculptures of the Parthenon
  • Jessi Stumpfel, Chris Tchou, Tim Hawkins, Paul Debevec,
  • Jonathan Cohen, Andrew Jones,  Brian Emerson
  • University of Southern California
  •  Institute for Creative Technologies


  • Philippe Martinez
  • Ecole Normale Superieure


  • Tomas Lochman
  • Basel Skulpturhalle
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The Parthenon
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Modern Parthenon 2003 A.D.
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Ancient Greek ~432 B.C.
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Pediment Sculpture
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Metope
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Frieze
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Acropolis Museum - Athens
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Louvre - Paris
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British Museum - London
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Getty Museum – Malibu
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Basel Skulpturhalle - Switzerland
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Basel Skulpturhalle
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Scanning Trip
  • Four people
  • Five days
  • 160+ meters of frieze
  • 52 metopes
  • East and West pediments
  • 1 caryatid column
  • 1 roman copy of Athena statue
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3D Scanning Projects
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Structured Light Scanner
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Sculpture Scanner
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Gray code patterns
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Gray code patterns
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Gray code patterns
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Gray code patterns
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Triangulation
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Scanning Trip
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Processing Pipeline
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Sub-pixel Analysis
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Correspondance Map
Pixel Accuracy
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Sub-pixel Analysis
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Sub-pixel Analysis
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Sub-pixel Analysis
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Sub-pixel Analysis
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Correspondance Map
Pixel Accuracy
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Correspondance Map
Sub-Pixel Accuracy
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Sub-Pixel Analysis
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Camera & Projector Calibration
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Calibrate Application
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Processing Pipeline
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PGPaint
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Processing Pipeline
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Scanning
Angles
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Scan Aligning
  • MeshAlign (CNR Pisa)
    • Initial alignment by hand
      • User selects matching points
    • Automatic refinement
      • Improved iterated closest point algorithm
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Initial Alignment
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Merge
  • PlyMC (CNR Pisa)
    • volumetric surface reconstruction (mesh merging)
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Decimation
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Metope Render
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South Metopes
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South Frieze
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Reuniting Sculptures
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Lessons Learned
  • Camera particularities
    • even and odd lines of camera sensor offset by a third of a pixel
  • Depth of field/focus of camera and projector
    • resulted in noisy sections in some scans
  • Data Organization


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Lessons Learned
  • Calibration Extrapolation
    • checkerboard should cover extreme corners of camera image
    • distortion doesn’t extrapolate well
    • Use linear extrapolation and down-weighting

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Casts vs. Originals
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Casts vs. Originals
  • Access
  • Safety of originals
  • Sometimes in different conditions
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Casts vs. Originals
  • Access
  • Safety of originals
  • Sometimes in different conditions
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Casts vs. Originals
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Texture Maps
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Cast with Real Texture
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Website
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Frieze Animation
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Thanks to

  • Nathan Yun
  • Genichi Kawada
  • Marc Brownlow
  • Zach Turner
  • Andrew Gardner
  • Brian Manson
  • Donat-Pierre Luigi
  • Diane Piepol
  • Roberto Scopigno
  • Paolo Cignoni