Sharing 3D Cultural Heritage: Standards and metadata
- 1. Sharing 3D Cultural Heritage: Standards and metadata Kate Fernie, CARARE VIGIE workshop, 14th April 2021
- 2. Everyone wants their content to be easily findable, accessible, interoperable and ready for use How can we make this work for 3D cultural heritage?
- 3. Cultural heritage assets are of very different size and scale – from large monument complexes to small objects The use cases for digitisation in 3D are varied - from conservation, research, education to tourism The methods, techniques and workflows differ according to the asset and the purpose of the project There are challenges Recording in 3D at Knowth, Brú na Bóinne, Discovery Programme, CC-BY-NC INCEPTION platform
- 4. Looking beyond capture Poulnabrone Portal Tomb, 3D model delivered by Sketchfab, Discovery Programme, CC-BY-NC-SA The process of creating 3D is complex – from capture, post processing, optimization, modelling, animation to annotation. Discussions about quality focus on aspects such as resolution, accuracy and precision, visual appearance and historical accuracy We need to think about the future For sharing and preserving 3D standards, metadata, rights and access licenses are important
- 5. Notre Dame, 15 April 2019, Godefroy Troude, Wikimedia Commons, CC-BY--SA Why standards, metadata and rights? There may not be a chance to go back and repeat the capture You need good quality documentation and permission to re-use someone else’s 3D content
- 6. Talking of standards There is a lack of international standards for 3D cultural heritage We have principles – e.g. the London Charter for computer-based visualization of cultural heritage. There are industry standards - for CAD, Engineering Drawings, Imaging systems, for Building Information Modelling (BIM) and industry standard file formats; and We have best practices - for Historic BIM covering naming conventions, geometry, coordinates, modelling, CAD standards, object libraries, as well as metadata and information exchange.
- 7. 3D cultural heritage We need a model that allows this information to be brought together and shared Castle of St Magdala de Pulpis, ADD&4D, InC Rich digital documentation that comprises of 3D and 2D graphical data, documents, drawings and more.
- 8. As well as good 3D content we need high quality metadata: • To understand the 3D content and the cultural heritage that is represented • For discovery of the content and all the related documentation • To enable preservation and reuse Yet metadata for 3D is often minimal Why metadata? • Few cataloguing systems available Karin Glasemann, National Museum of Sweden, CC-BY-NC-SA
- 9. Key concepts • Project information – scope, goals, date, methods and techniques • Cultural heritage – the object that has been captured • Digital data – how the data was produced, model information, where the digital objects can be found • Archive information Metadata for 3D cultural heritage Overview of the CARARE model from 3D content in Europeana task force report, K Fernie et al, 2019 Several metadata schemas are in use: CIDOC CRM dig, LIDO, CARARE, Smithsonian
- 10. So far I’ve talked about standards and metadata Sharing is also about access to the 3D content
- 11. Online access to 3D content HTML5 and WebGL brought about a revolution in terms of access to 3D Enabled the development of Sketchfab, 3D HOP, the Smithsonian’s 3D viewer, and other platforms Voyager, the Smithsonian museum’s 3D viewer, CC-0 • 3D content can be streamed in real time • Content is accessible on web browsers and mobiles • Users can interact with the content in real time
- 12. There are still challenges There are more than 50 3D formats in use. Together with low standardization and limited metadata, this complicates both • Integrating the content within platform like Europeana for access and • depositing with a repository for longer term preservation Europeana
- 13. Sharing 3D The Thinker at the Musée Rodin, France https://www.myminifactory.com/object/3d-print-the-thinker-at-the- muse-rodin-france-2127 Findability – creating good metadata records with unique identifiers Accessible – using a limited set of common file formats that mean your 3D content can be delivered, accessed and preserved easily. Deposit your archive as well as publishing Interoperable – using 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 licensing for re-use Can we work towards FAIR:
- 14. [email protected] Thanks for your attention! www.carare.eu