Digitizing, Modeling, 3D Printing for a Forensic Reconstruction by wgv13363

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									Digitizing, Modeling, & 3D Printing
    for a Forensic Reconstruction of
           George Washington

            Dianne Hansford
                    Let’s Discover
 Scanning – Digitizing
 Modeling – Create/Modify Geometry
 3D Printing – Rapid Prototyping


    Math + Computer Science + Engineering + Art

      Demonstrate through application: Forensic Reconstruction of GW




                        Dianne Hansford   * prism.asu.edu              2
                         Background
   Summer ’05 marked the 250th
    anniversary of GW as officer in
    French & Indian war
   Mt. Vernon Society
    commemorated this
    anniversary
   Commissioned three life-sized
    statues
     – 19: officer in British army
       (surveyor)
     – 45: led revolutionary army
       (on horse)
     – 57: sworn in as President
       (hand on bible)



                           Dianne Hansford   * prism.asu.edu   3
                 Project Team
   Anthropologists                         Artist &
    – Jeff Schwarz                           Graphic/Digital Artist
      @ Univ. Pittsburg                        – Dan Collins
    – Matt Tocheri                             – Gene Cooper

   Computer Scientists                     Rapid Prototyping
    –   Anshuman Razdan                        – Scott Van Note
    –   Gerald Farin
    –   Dianne Hansford
    –   Jeremy Hansen

                      Dianne Hansford   * prism.asu.edu               4
    Given Information / Evidence
   Bust made at age 53 (Houdon)
   Life mask made at age 53 (Houdon)
   Life size statue at age 53 (Houdon)

   Portraits
    – G. Stuart (age 63+)
    – C. Peale (age 50+)

   Dentures
   Clothing and other artifacts
   Historic and anecdotal evidence

                       Dianne Hansford   * prism.asu.edu   5
The Many Faces of GW




     Dianne Hansford   * prism.asu.edu   6
    A Hard Problem Made Harder
   GW began loosing
    teeth at age 24

    Tooth loss      Bone loss                         facial feature changes



   GW dentures did not
    fit comfortably




                  Dianne Hansford   * prism.asu.edu                        7
Given Info Scanned




    Dianne Hansford   * prism.asu.edu   8
Dianne Hansford   * prism.asu.edu   9
Scanning: Animated Movies




       Dianne Hansford   * prism.asu.edu   10
3D Points Triangle Mesh




       Dianne Hansford   * prism.asu.edu   11
Scanning: Art




                            Digital Michelangelo Project




       Dan Collin’s Twister

 Dianne Hansford   * prism.asu.edu                         12
    Face Reconstruction Process
 Mandibles from 20-
  year-old
  contemporary of GW
 Modify digital copy to
  fit into 53-year-old
  face mask of GW
    –   Fit to dentures
    –   Bone loss
    –   Dimensions of face
    –   Normal aging

                      Dianne Hansford   * prism.asu.edu   13
Volume Deformations
  Morphing and Warping




      Dianne Hansford   * prism.asu.edu   14
        Deformation Operations
   Rotate about a line
   Bend about a line                                  Isolation of
   Translate sets of                                  deformation effects
                                                       via a “deformation
    control points                                     box”
   Taper cross section(s)
   Scale
   Move
   ...
   Geomagic

                   Dianne Hansford   * prism.asu.edu                   15
Mandible Deformation I




      Dianne Hansford   * prism.asu.edu   16
Mandible Deformation II




      Dianne Hansford   * prism.asu.edu   17
Mandible Deformation III




      Dianne Hansford   * prism.asu.edu   18
Mandible Deformation IV




      Dianne Hansford   * prism.asu.edu   19
Mandible Deformation V




      Dianne Hansford   * prism.asu.edu   20
3D Printing




Dianne Hansford   * prism.asu.edu   21
                   3D Printing
 Also called Rapid Prototyping, Layered Manufacturing, ...
 Quick fabrication for
   – proof of concept (example: new phone from Motorola)
   – functional testing
   – molding
   – 3d faxing
 “Additive” manufacturing
   – 1.5 mm material “pen” applicator (such as plastic)
   – 0.25 mm thickness of each layer
   – 1 hour to build each 25mm (1inch) of material



                    Dianne Hansford   * prism.asu.edu    22
3D Printing Method




    Dianne Hansford   * prism.asu.edu   23
3D Printing for Space Stations?




          Dianne Hansford   * prism.asu.edu   24
     Digital Results




19        45                           57




                                            19
                         45 & 57
       Dianne Hansford   * prism.asu.edu         25
Digital  RP  “Real Life”




        Dianne Hansford   * prism.asu.edu   26
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Dianne Hansford   * prism.asu.edu   28
Dianne Hansford   * prism.asu.edu   29
History Channel




  Dianne Hansford   * prism.asu.edu   30
Scientific American




                            Feb 2006 issue



    Dianne Hansford   * prism.asu.edu        31
Thank you for your attention!




         Dianne Hansford   * prism.asu.edu   32

								
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