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Sharing 3D Cultural Heritage

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We have a 3D model, what now?
Kate Fernie, CARARE
University of Turku, 12 February 2021

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Sharing 3D Cultural Heritage

  1. 1. Sharing 3D Cultural Heritage Kate Fernie, CARARE We have a 3D model, what now? University of Turku, 12 February 2021
  2. 2. CARARE is a non-profit membership whose main objective is advancing professional practice and fostering appreciation of the digital archaeological and architectural heritage. ● Several CARARE members are active in 3D digitisation and in creating 3D content for various audiences ● CARARE has been sharing 3D content with Europeana since 2011-12 ● We’ve experienced various developments in 3D over that time https://www.carare.eu Introduction
  3. 3. Cultural heritage and 3D • 3D digitisation of the cultural heritage is increasing valuable for conservation, research, education, tourism and more • It is important for documenting heritage at risk • 3D provides access to heritage in places that are hard to reach • Is enabling the sector to offer innovative and engaging ways to open up access to cultural heritage for diverse audiences INCEPTION Platform
  4. 4. • 3D is used on cultural heritage assets of very different size and scale – from large monuments and buildings and to small objects • The methods, techniques and workflow differ according to the object and the purpose of the project • The audience for the content and they will use it also influences the what is captured and the quality Creating 3D Recording in 3D structure at Knowth, Brú na Bóinne, Discovery Programme, CC-BY-NC Scanning the Girl with the Pearl Earring, Mauritshuis,Kate Fernie, CC-BY https://carare.gitbook.io/share-3d-guidelines/3d-process/context
  5. 5. Standards and qualities People often focus on the process of creating 3D – the capture, post processing, optimization, modelling, animation, annotation and aspects of quality such as resolution, accuracy and precision, visual appearance, historical accuracy and so on. Poulnabrone Portal Tomb, 3D model delivered by Sketchfab, Discovery Programme, CC-BY-NC-SA When it comes to sharing and preserving 3D these aspects are important: • Standards and using standard file formats • Capturing metadata • Clearing the rights and licencing access (and preservation).
  6. 6. Outputs 3D projects for cultural heritage normally produce more than one output • There should be an archive of the full dataset for preservation • Versions of the 3D models may be published at different resolutions online • Or used in galleries to create visitor experiences • Versions may also be created for 3D printing The Thinker at the Musée Rodin, France https://www.myminifactory.com/object/3d-print-the-thinker-at-the-muse- rodin-france-2127
  7. 7. Providing online access to 3D content • Until fairly recently publishing 3D content online was considered to be an unsolved problem • File sizes were vast and too heavy for speedy download • Users had to download and install various different plugins or software before they could view the content • HTML5 and WebGL brought about a revolution • 3D content streamed in real time • Accessible on web browsers and mobiles Voyager, the Smithsonian museum’s 3D viewer, CC-0  Sketchfab, 3D HOP, the Smithsonian’s 3D viewer and others
  8. 8. From Sketchfab to Europeana • Sketchfab is a popular platform for sharing 3D content among cultural heritage institutions • In the Share3D project (2018-2020) we created: • A metadata capture tool for CH institutions uploading 3D models to Sketchfab to share their content with Europeana • Guidelines on the tools and the 3D workflow www.share3d.eu https://sketchfab.com/turunmuseokeskus Co-financed by the Connecting Europe Facility of the European Union
  9. 9. As well as good 3D content we need metadata: • To understand the 3D content and the cultural heritage that is represented • For discovery of the content and • For preservation Yet metadata for 3D is often minimal Why a metadata? https://share3d.eu/dashboard/ • There are few cataloguing systems available
  10. 10. • Links to Sketchfab – imports metadata for your models on Sketchfab – links, descriptions, etc. • Easy to use – select subjects and periods from AAT, map search to find coordinates • Links to Europeana – creates records in EDM format ready for harvesting by Europeana • Includes paradata about the model creation process Share3D dashboard
  11. 11. In this way Share3D is helping to increase the amount of 3D content that is available to Europeana’s users https://www.europeana.eu/
  12. 12. Overview of Europeana Fragment of relief, Medalhavsmuseet, CC-BY • Europe’s platform for digital cultural heritage funded by the European Commission • 50+ million items – photographs, videos, music, newspapers, text (books, reports, diaries, letters), spoken word • c. 20,000 3D models https://www.europeana.eu
  13. 13. Challenges for Europeana Sjösccouten Idris på Daphne lägger till.. Society of Swedish Literature in Finland, CC-BY • People are used to being able to view the content on the web immediately on their devices • Images and text documents • For video and audio files there are standard formats and embeddable players for online delivery • 3D is less well standardized • There are 50+ 3D formats in use • Many don’t play immediately within web platforms
  14. 14. The format and viewer chosen affects the experiences that (Europeana) can offer users when they find 3D online
  15. 15. Simple objects: user experience • Explore objects from all sides • Zoom in on details • Show specific views (front, side, top) 3D pdf, model of Helmet from Peretu Muzeul Național de Istorie a României, CCO 3D PDFs currently need downloading and a click to activate the content
  16. 16. Complex objects: user experience • Explore objects inside and out • Interiors and complex scenes • Zoom in on details • Show specific views • Use annotations to follow a virtual tour of the monument as it is today Castle of St Magdala de Pulpis, ADD&4D, InC Model available via Sketchfab allows user interactivity within the browser window
  17. 17. Reconstructions: user experience • 3D and 4D visualization • Explore scenes including landscapes showing the site at different times in history • Follow a tour guide Saint Salvator abbey and landscape, Visual Dimension, InC
  18. 18. So far I’ve focused on Europeana’s approach Three research use cases follow
  19. 19. Research use case 1: Virtual reference collections https://www.darklab.lu.se/digital-collections/dynamic-collections/ • Lund University DARKLab • 3D models of museum objects provide a virtual reference collection • Powered by 3D HOP and 3D web archives
  20. 20. Metall Kniv, LUHM museum, DARK Lab, Lund University 3D HOP Includes tools that allow users to • Examine objects, take measurements and add annotations • Users can collect and compare 3D objects Research use case 1: Virtual reference collections
  21. 21. https://visual.ariadne-infrastructure.eu/ ARIADNEplus Visual Media Services • Publication and presentation of complex visual media assets o 3D media, RTI images and high resolution images • Based on 3D HOP • Not intended as an archive or a repository Research use case 2: Virtual reference collections
  22. 22. Research Use case 3: Publishing • Embedding 3D models within scholarly journals • Are other journals offering similar facilities?
  23. 23. Everyone wants their content to be easily findable, accessible, and interoperable with various systems and ready for re-use Let’s make this work for 3D cultural heritage
  24. 24. Sharing 3D data: towards FAIR Findability – create good metadata records and use unique identifiers Accessible – use common file formats (glTF, X3D, OBJ, PLY, STL, DAE, PLY, WRL, DICOM, IFC) that mean your 3D content can be delivered, accessed and preserved easily. Deposit your archive as well as publishing Interoperable – use formats, platforms and systems that can be supported by cultural institutions and their users, and which allow for connections between 3D, 2D and other media Re-usable – clear the rights in the cultural heritage object and digital content, and licence for re-use
  25. 25. kfernie27@gmail.com Thanks for your attention! www.carare.eu CARARE is a membership association and if you would like to find out more about joining us, please see: https://www.carare.eu/join-us/
  26. 26. Useful resources are available from: • CARARE training hub: https://pro.carare.eu/training-hub/ • ARIADNE training hub: https://training.ariadne-infrastructure.eu/ • Share 3D introduction to the 3D workflow: https://carare.gitbook.io/share-3d-guidelines/3d-process/context • 4CH competence centre on the conservation of cultural heritage: https://www.4ch-project.eu/ • European Commission Principles and tips for 3D digitisation: https://ec.europa.eu/digital-single-market/en/news/basic-principles- and-tips-3d-digitisation-cultural-heritage References
  27. 27. EC expert group on digital cultural heritage and Europeana: Principles and tips for 3D digitisation Consider the value of and need for 3D digitisation Identify the different formats and versions needed for different use cases Select what to digitize and for which use cases or user groups Decide whether to digitize in house or to out source Clarify copyright aspects and plan for open and broad access Determine the minimum quality needed but aim for the highest possible Plan for long- term preservation of all data acquired Use the right equipment, methods and workflows Protect the assets both during and after digitization Invest in knowledge of 3D technologies, processes and content https://ec.europa.eu/digital-single-market/en/news/basic-principles-and-tips-3d-digitisation-cultural-heritage

We have a 3D model, what now? Kate Fernie, CARARE University of Turku, 12 February 2021

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