Definition
Digital representation (e.g. digital image, video, 3D object, audio file) of the cultural heritage object, which is accessed via a direct stable link
Other possible database element names
Link to the digital object
ID digital copy
Medium
Image
Text/URI
URI
Repeatable
Yes
Obligation level
Mandatory
Recording notes
The media file should be made available via a persistent URL. If a link cannot be provided, an alternative delivery method for the media file should be agreed with portals or other data recipients.
If different images, videos, etc. are available, several media files may be provided. In this case, the file with the best available quality should be selected. If necessary, additional media files for subtitles, audio description and transcription can be provided for reasons of digital accessibility of audio and video files.
CARE: Sensitive items, such as religious or ritual artefacts, that are not appropriate for viewing or should be reserved for a specific group of people, may not be published with an image. A placeholder image may be used instead (see expressions in LIDO). Institutions should consult with people from the communities of origin. Ideally, ethical considerations should be documented in the database.
Examples
https://fotothek.slub-dresden.de/fotos/df/pos-2019-a/0000000/df_pos-2019-a_0000108.jpg
http://skd-online-collection.skd.museum/imagescreate/image?id=1218449&type=gross
http://www.tierstimmenarchiv.de/recordings/Pavo_cristatus_Kr0063_01_short.mp3 (Audio)
https://st.museum-digital.de/singleimage?resourcenr=1954&noiiif=1 (3D)
Expression in LIDO (v1.0 and v1.1)
<lido:resourceWrap> <lido:resourceSet lido:sortorder="1"> <lido:resourceRepresentation lido:type="http://terminology.lido-schema.org/lido00464"> <lido:linkResource lido:formatResource="image/png">https://www.bruecke-museum.de/ds-images/61779_front.png</lido:linkResource> </lido:resourceRepresentation> </lido:resourceSet> </lido:resourceWrap>
CARE:
Example from the portal "Collections in Colonial Contexts":
<lido:resourceWrap>
<lido:resourceSet lido:sortorder="1">
<lido:resourceRepresentation lido:type="http://terminology.lido-schema.org/lido00467">
<lido:linkResource lido:formatResource="text/html">https://ccc.deutsche-digitale-bibliothek.de/</lido:linkResource>
</lido:resourceRepresentation>
</lido:resourceSet>
</lido:resourceWrap>
Comparison with relevant standards and database models
Standard | Element name | Text/URI | Repeatable | Obligation level | Comment |
|---|---|---|---|---|---|
German Digital Library: Metadata requirements for data provision | Vorschaubild [eng.: Preview image] Link zum digitalen Objekt: Mediendatei [eng.: Digital object link: media file] | URI | Yes | Conditionally mandatory (see Comment) | Either a link to the media file or to the object in the media viewer or to the object in context is mandatory. A preview image is also mandatory for audio and video files and 3D objects. |
URI | Yes | Conditionally mandatory (see Comment) | Mandatory if <recordInfoLink> is not available. A preview image is also mandatory for audio and video files and 3D objects. | ||
| DFG Basic Data Record | Digital copy identier (ID) | URI | Not specified | Mandatory | The "Digital Copy Identifier (ID)" should resolve as a LOD URI for the digitised item. |
| DFG Practical Guidelines on Digitisation: LIDO core metadata | Representations: <resourceSet> / <resourceRepresentation> | URI | Yes | Mandatory if available | |
| Europeana Data Model (EDM) | <edm:isShownBy> | URI | Yes | Conditionally mandatory | In the Europeana Data Model (EDM) EITHER <edm:isShownBy> OR <edm:isShownAt> must be available. |
| EODEM application profile | Image /lido:resourceWrap/lido:resourceSet/ lido:resourceRepresentation/lido:linkResource | Text or URI | No | Mandatory | |
| digiCULT | Medium | URI | Yes | Recommended | |
| museum-digital | Image, PDF, Video, Audio, 3D-object | URI | Yes | Mandatory |
ID data element
mds0014