Developing and applying the CARARE metadata schema for 3D documentation, presented by Andrea D’Andrea

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Developing and applying the CARARE metadata schema for 3D documentation, presented by Andrea D’Andrea, Università degli Studi di Napoli L’Orientale, Italy during the 3D ICONS workshop at Digital Heritage 2013.

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Developing and applying the CARARE metadata schema for 3D documentation, presented by Andrea D’Andrea

  1. 1. Developing and applying the CARARE metadata schema for 3D documentation Andrea D’Andrea, Università di Napoli “L'Orientale” Digital Heritage 2013, Marseilles, 28 October 2013
  2. 2. Metadata and 3D content Scientific data cannot be used correctly without information about what it means, how it was created and in which conditions Relevant to 3D given the range of – Instruments, methods and techniques – used in both data capture and data processing, and – the different motivations and rationales for 3D reconstructions Digital Heritage 2013, Marseilles, 28 October 2013 Pompeii, Italy
  3. 3. Benefits of Metadata Metadata can store information about the life cycle of a 3D object – Field: keeps track of instrument settings, the condition of the physical object being scanned and the objectives of the project – Lab: keeps track of post processing of the data and provides a record of how evidence has been interpreted – Access: supports discovery and use of the objects for education, tourism, research – Preservation: supports long term preservation and allows for re-use of the data Digital Heritage 2013, Marseilles, 28 October 2013
  4. 4. Metadata: some context Pisa The London Charter – Established principles for computer visualisation CIDOC CRMdig – allows a simple and clear description of the processes carried out to digitize and render a 3D model (3D COFORM) CARARE – A harvesting schema for the archaeological and architectural heritage supporting delivery of content to Europeana Digital Heritage 2013, Marseilles, 28 October 2013
  5. 5. Provenance In 3D digitisation of cultural heritage objects provenance covers the technical processes whether this is: – Equipment chosen and the instrument settings – Light sources – Any obstacles to digitisation or sources of noise/reflections – Software choices and settings – Techniques chosen for meshing, textures, decimation, simplification, alignment etc. Digital Heritage 2013, Marseilles, 28 October 2013
  6. 6. Paradata Provides information about the human processes of understanding and interpreting: – The evidence used to interpret an object and to create a reconstruction – The methodology used in a research project Paradata enables – Alternative interpretations or hypothesis to be presented and linked to the supporting factual evidence The principles are set out in the London Charter Digital Heritage 2013, Marseilles, 28 October 2013
  7. 7. 3D ICONS approach 3D-ICONS needed to establish a metadata schema to: – support the provenance and paradata required for quality assurance of 3D models, – take on board the recommendations in CIDOC CRMdig; and to – Support delivery of metadata to Europeana data model Digital Heritage 2013, Marseilles, 28 October 2013
  8. 8. CARARE Metadata Schema Conceptually the CARARE record is focussed on a heritage asset and its relations to digital resources, activities and to collection information Heritage asset 4 themes Activities Digital resources Collection http://www.carare.eu/eng/Resources/CARARE-Documentation
  9. 9. The link to Digital Resource • The Heritage Asset provides the description of the object itself • The Digital Resource provides the link to the resource online • You create a link between them by using the relation HasRepresentation has Representation Heritage Asset Digital Heritage 2013, Marseilles, 28 October 2013 Digital Resource
  10. 10. The link to Digital Resource • One heritage asset can be related to another for example • A 3D reconstruction (HA) isReplicaOf the physical remains (HA) • One heritage asset can be related to another version of the same object • A photorealistic 3D model (HA) DC:Relation to a 3D reconstruction (HA) • One heritage asset can be related to an activity • A 3D model (HA) WasDigitisedBy a Digitisation project (Act) • An activity can be related to a digital resource • A Digitisation project (ACT) HasCreated a 3D object(DR) • One heritage asset can be related to many digital resources
  11. 11. CARARE and EDM Digital Heritage 2013, Marseilles, 28 October 2013
  12. 12. Europeana Data Model Provides an open cross-domain framework that accommodates community standards Is a semantic web approach that enables Linked Open Data EDM example
  13. 13. EDM • • • Distinguishes “provided objects” - painting, book, movie, etc. (edm:providedCHO) from digital representations of the object found online (edm:webResource) and Groups these together to represent a logical whole (ore:Aggregation) Digital Heritage 2013, Marseilles, 28 October 2013
  14. 14. Provided Cultural Heritage Object (CHO) and descriptive metadata Digital Heritage 2013, Marseilles, 28 October 2013
  15. 15. Web Resources – digital representations Digital Heritage 2013, Marseilles, 28 October 2013
  16. 16. Aggregations – Bundling it all together Digital Heritage 2013, Marseilles, 28 October 2013
  17. 17. Contextual Resources – e.g., Places CARARE’s geospatial enrichment represented with EDM contextual resource class
  18. 18. Mapping CARARE data to EDM A CARARE object becomes one or several EDM Provided Cultural Heritage Objects with:  Related web resources  Aggregations  Contextual information about place Digital Heritage 2013, Marseilles, 28 October 2013
  19. 19. CARARE 2.0 Provides an update to the CARARE schema – Adds properties and elements to ensure compliance with 3D ICONS requirements Extends the activities theme – Allows for different types of events (such as data acquisition, post processing) – Adds an element to capture event methods – Allows for the general and specific purposes of events to be distinguished – Allows for methods and techniques to be distinguished better – Adds relations between events to conform with CRMdig Digital Heritage 2013, Marseilles, 28 October 2013
  20. 20. CARARE 2.0 continued Redefines the scope of the heritage asset class to include a wider range of cultural objects: – The class was limited to monuments, buildings, landscapes, archaeological objects, ecofacts and shipwrecks – The scope now includes information sources such as books, journal articles, maps, plans, drawings, photographs, movies and other born digital cultural objects such as 3D models – General type element added to distinguish real world monuments from other cultural objects The digital resources theme was simplified to remove duplication This simplifies the mapping to EDM Digital Heritage 2013, Marseilles, 28 October 2013
  21. 21. Edm: ProvidedCHO Heritage Asset Ore:Aggregation Edm:Was_Present_At CRMdig:L1B.was_digitized_by Edm: Event Acquisition Process Dc:Description (free text) Dc:Description (free text) Calibration Edm: Event Edm:HasLandingPage Dc:Description (free text) Edm:Was_Present_At CRMdig:L20F.has created Edm:HasView Edm: Event Edm:Information Resource File Calibration Digitization Process Dc:Description (free text) Edm: WebResources Digital Resource Edm: WebResources 3DModel Thumbnail given to Europeana Workshop on Metadata – Xanthi 27-28 June 2013 Edm: Event Edm:Was_Present_At CRMdig:L20F.has created Edm:Information Resource Documentation File Documentation 21
  22. 22. Heritage Asset Edm: ProvidedCHO Ore:Aggregation Edm:Was_Present_At CRMdig:L1B.was_digitized_by Edm: Event Acquisition Process Dc:Description (free text) Software Execution Edm:Was_Present_At CRMdig:L20F.has created Edm:HasLandingPage Dc:Description (free text) Edm:Was_Present_At Edm:Information Resource Edm: Event Edm:HasView Edm:Information Resource Formal Derivation Dc:Description (free text) Edm: Event Edm: WebResources Digital Resource Thumbnail given to Europeana Edm: WebResources 3DModel Workshop on Metadata – Xanthi 27-28 June 2013 22
  23. 23. CARARE 2.0 implementation http://3dicons-project.eu/eng/Media/Files/D6.1-Report-onMetadata-Thesauri Digital Heritage 2013, Marseilles, 28 October 2013
  24. 24. Conclusions       Recording good quality metadata is important! Its beneficial for field researchers, visualisation professionals and general users Paradata and provenance are important for use and reuse of 3D models 3D ICONS has built on existing principles and schemas to establish the CARARE 2.0 for 3D documentation and to supply data to Europeana CARARE and 3D ICONS are helping confirm the relevance of richer data models for Europeana Human supervision remains crucial for quality assurance! Digital Heritage 2013, Marseilles, 28 October 2013
  25. 25. Any questions? Andrea D'Andrea dandrea@unior.it This project has been funded with support from the European Commission‘s CIP ICT PSP programme

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