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The challenges of preserving digital data for World
                  Heritage sites

                     DPE Planets and...
UNESCO is a UN Specialized Agency


U nited
N ations
E ducation
S cience
C ulture
O rganization

                         ...
World Heritage Convention




                            M.Hernandez.
878 World Heritage sites (as per July 2008)




Great wall, China                    Taj Mahal, India




 Machu Picchu, P...
adopted the UNESCO Charter on Preservation of
  Digital Cultural Heritage (17 Oct 2003)‫‏‬

“….Recognizing that such resou...
Overall environment




                      6
Data is very important
      data management not a main priority


Data storage is very important
     data storage struct...
Environment – User audience(s)




                                 8
UNESCO




Heritage conservation
community

                        9
Data is originated at any of the 193 Member States (countries)
                                 Data is received at UNESCO...
UNESCO as a CASPAR user




                          11
A process


Legal documents




Paper documents




Old photograhps




Paper maps
A process


Legal documents




Paper documents




Old photograhps




Paper maps
A process


Legal documents




Paper documents




Old photograhps
                  Final PDF




Paper maps
A process; the end-result

                  √       Staff changes (process
Legal documents
                          invo...
Before

       Paper documents
       Paper maps
       Paper photos
       Books
       Etc.


        Year +/- 2000

The...
The heritage conservation community
                as a
            CASPAR user




                                     ...
Digital Cultural Heritage

• The ontology of digital heritage (“computer-assisted
  cultural heritage”) refers to the rela...
Description of the data objects




                                  19
Machu Picchu, Peru
Data object: TEXT (PDF)




Machu Picchu, Peru
Data object: Images

Machu Picchu, Peru
Data object: Satellite images




Machu Picchu, Peru
Data object: digital GIS layers




Machu Picchu, Peru
•Description of the data objects




                             Data object: 3D models




   Machu Picchu, Peru
The cultural heritage data
       challenges




                             26
The process: known and/or unknown




                         Satellite data




                        Data object: 3D ...
Representation information
•The RepInfo not available

  –   xxx.doc
  –   xxx.pdf
  –   xxx.jpeg
  –   Satellite images
 ...
Preservation Challenges

Entire UNESCO heritage archive needs to be preserved

Typical of the type of data that UNESCO enc...
UNESCO and ASEMANTICS
Cultural heritage RepInfo

UNESCO data objects do not have ‘complete’ RepInfo

•Testbed: tests the a...
Tool for
           jpeg repinfo
UNESCO
selected   Tool for
           GIS repinfo
Data
holdings   Tool for
           pdf...
Tool for
           jpeg repinfo
UNESCO
selected   Tool for
           GIS repinfo
Data
holdings   Tool for
           pdf...
Creation of the Representation
                                  Information
•The user interacts with the RepInfo tool

•E...
Documenting a process
    Laser scanning
ASEMANTICS + UNESCO




                         34
Laser points




Laser scanning   Wire frame      Artifiical shading    Texture
                 Triangulation
Greece   Indonesia   Brazil   Japan    Laos




….. Thank you



                                        36
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Data For World Heritage Sites Mario Hernandez

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3rd Annual WePreserve Conference Nice 2008

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Data For World Heritage Sites Mario Hernandez

  1. 1. The challenges of preserving digital data for World Heritage sites DPE Planets and Caspar ‘Wepreserve’ 3rd annual Conference UNESCO United Nations Educational, Scientific and Cultural Organization Mario Hernandez Nice, France October 29-30 2008 1
  2. 2. UNESCO is a UN Specialized Agency U nited N ations E ducation S cience C ulture O rganization .
  3. 3. World Heritage Convention M.Hernandez.
  4. 4. 878 World Heritage sites (as per July 2008) Great wall, China Taj Mahal, India Machu Picchu, Peru Palenque, Mexico
  5. 5. adopted the UNESCO Charter on Preservation of Digital Cultural Heritage (17 Oct 2003)‫‏‬ “….Recognizing that such resources of information and creative expression are increasingly produced, distributed, accessed and maintained in digital form, creating a new legacy – the digital heritage, ….Understanding that this digital heritage is at risk of being lost and that its preservation for the benefit of present and future generations is an urgent issue of worldwide concern, …” 5
  6. 6. Overall environment 6
  7. 7. Data is very important data management not a main priority Data storage is very important data storage structure low as far as budget priority Data preservation limited to back-up(s) 7
  8. 8. Environment – User audience(s) 8
  9. 9. UNESCO Heritage conservation community 9
  10. 10. Data is originated at any of the 193 Member States (countries) Data is received at UNESCO Data creation process is unknown Data is stored Data is used only when necessary Data preservation is not a big concern UNESCO Data is generated Whole process is well known but not documented Data is stored Data is daily used, transformed, processed, etc Emerging technology: • data processing is main focus, Cultural heritage conservation • data preservation is not a concern community 10
  11. 11. UNESCO as a CASPAR user 11
  12. 12. A process Legal documents Paper documents Old photograhps Paper maps
  13. 13. A process Legal documents Paper documents Old photograhps Paper maps
  14. 14. A process Legal documents Paper documents Old photograhps Final PDF Paper maps
  15. 15. A process; the end-result √ Staff changes (process Legal documents involves deep personal knowledge). The chain of evidence is lost! Paper documents X Old photograhps X Inputs used not documented Paper maps X
  16. 16. Before Paper documents Paper maps Paper photos Books Etc. Year +/- 2000 The use of PC becomes popular After Digital documents Digital maps Digital pictures Digital DVDs Etc. 16
  17. 17. The heritage conservation community as a CASPAR user 17
  18. 18. Digital Cultural Heritage • The ontology of digital heritage (“computer-assisted cultural heritage”) refers to the relationships between: data acquisition, processing, and visualization • For the end user, this complex process has to be unified into a single experience: 3D exploration • In this way 3D creates interaction between the end user, the research group that collected the data, and the cultural landscape 18
  19. 19. Description of the data objects 19
  20. 20. Machu Picchu, Peru
  21. 21. Data object: TEXT (PDF) Machu Picchu, Peru
  22. 22. Data object: Images Machu Picchu, Peru
  23. 23. Data object: Satellite images Machu Picchu, Peru
  24. 24. Data object: digital GIS layers Machu Picchu, Peru
  25. 25. •Description of the data objects Data object: 3D models Machu Picchu, Peru
  26. 26. The cultural heritage data challenges 26
  27. 27. The process: known and/or unknown Satellite data Data object: 3D models Machu Picchu, Peru
  28. 28. Representation information •The RepInfo not available – xxx.doc – xxx.pdf – xxx.jpeg – Satellite images Timbuktu (real picture) – xxx.shp – Laser cloud points – xxx.mpeg (3D models) Timbuktu virtual 3D model) 28
  29. 29. Preservation Challenges Entire UNESCO heritage archive needs to be preserved Typical of the type of data that UNESCO encounters: • Proprietary file formats no longer recognized • File format inconsistencies • Changes in implicit team knowledge A UNESCO specific challenge: • Organizational changes, e.g. ex-USSR
  30. 30. UNESCO and ASEMANTICS Cultural heritage RepInfo UNESCO data objects do not have ‘complete’ RepInfo •Testbed: tests the automatic extraction of RepInfo •But: need to create additional RepInfo •Tools: to assist in the completion of RepInfo under development (after Pisa meeting): UNESCO + ASEMANTICS 30
  31. 31. Tool for jpeg repinfo UNESCO selected Tool for GIS repinfo Data holdings Tool for pdf repinfo CASPAR FIND, PDS, Tool for KM, etc 3D repinfo 31
  32. 32. Tool for jpeg repinfo UNESCO selected Tool for GIS repinfo Data holdings Tool for pdf repinfo CASPAR FIND, PDS, Tool for KM, etc UNESCO 3D repinfo RepInfo 32
  33. 33. Creation of the Representation Information •The user interacts with the RepInfo tool •Existing RepInfo is extracted (automatic) and presented to the user •The user is requested to enter additional ‘mandatory’ fields •The information is submitted and associated RepInfo is created 33
  34. 34. Documenting a process Laser scanning ASEMANTICS + UNESCO 34
  35. 35. Laser points Laser scanning Wire frame Artifiical shading Texture Triangulation
  36. 36. Greece Indonesia Brazil Japan Laos ….. Thank you 36

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