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How to model images and how to integrate images URLs? #17
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I am currently working on the Pharos project, a consortium of photo archives. The key question is modelling images. Thus far, we are pretty satisfied with our modelling. In brief the idea is that you model the basic entity as E36 Visual Item and then from there you indicate its materializations which are either connected through p128 to an E22 or p165 to a D1 digital object. A URI is just an instance of E42 with a type 'URI'. |
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To document the source of the image (where the image comes from), could we add |
I don't see any reason why we couldn't use That said, I would like to keep this issue open to get a better understanding of the issue. Three items in particular:
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The pattern I proposed on the 12th of December has been added to the TM 2.0 and will be tested in the following months. |
To help us understanding the E38_Visual_Item, this Linked Art discussion might be useful: linked-art/linked.art#289 |
what is the semantic meaning of source? Does it mean someone who owns or provides the digital image? That said, I would like to keep this issue open to get a better understanding of the issue. Three items in particular: Are we happy with the CRM pattern for the image URL or we would prefer something like schema:contentURL? would you put this directly off the image? By creating an instance of D1 Digital Object, you recognize that the digital image has a separate identity, which is actually true. Do we all agree that our digital images cannot be deleted because they are conceptual objects? I'm still not convince of this semantic choice? A copy of the digital object could be deleted, but not the pure idea of the digital object until all copies of it are destroyed. Would you track that anyway? Where do we draw the line between one Visual Item and another? Since the Visual Item is the only link between our E24 and D1, it's important to be sure that they will never be divided according to a visual issue like: "Oh I don't think it's the same visual item since I can't see the textures on the digital object." If you don't have the means to distinguish them because of lack of documentation, assume they are the same, to make life feasible? |
Hi @Habennin,
Good question, I think we would like to capture both information. It will be important to distinguish both in order to manage properly the rights. @stephenhart8 what do you think?
I totally agree that we need a specific node to represent the digital object. :)
So in this case, do we need another node to represent a specific digital object? In other words, the URL is a way to identify a location (no worries, I don't want to open a
I still think this is something we should state clearly because if someone thinks that he should create a distinct |
In order to facilitate the discussions on this issue, I have summarized the different questions that needs to be answered:
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As requested on February meeting, here are some examples of items that represent people and the description of these items. The information about the "subject" can be found in several fields of our database. For the purpose of this specific issue, I chose examples where the subject represented is described under "Title" and / or "Description". "Description" correspond to Info-Muse definition. In our database, we "share" this field with "Scope and content" (from the RDDA) for the archives description. The quality of the descriptions is uneven. |
Thank you @marielmat for the uses cases From what I have collected, the information pertaining to the descriptions of actors within images is as follows: 2006-981
2008-1716
1993.15019
PH2018-198
Those descriptions are full text, and does not describe more semantically the representation of actors. But as highlited, some common descriptors can be gathered and a few fields could be created:
There is two ways to of describing images, both that can be used at the same time:
The text field can be done with the use of an The more structured description of the representation of an actor through vocabulary terms is more difficult. One way is to use the property
It is unclear if this property can be used for the description of actors within visual items, or if it should be used the medium (for example that an actor is represented painted, or photographed, etc.). My proposition for the description of actors in visual items is as follows: Questions
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Les descripteurs utilisés par le Musée McCord afin de décrire une personne dans une œuvre ont été développés à une époque où les bases de données n’intégraient pas d’images. Le musée adhère au RCIP en 1988 et entreprend le catalogage de ses collections avec le logiciel Advanced Revelation, en version DOS. Les champs Title (différents types), Subject et Description qui servent à identifier et à décrire les personnes compensent l’absence d’une image en étant le plus descriptif possible. Nous utilisons encore ce modèle aujourd’hui avec The Museum System malgré la possibilité de lier une image à l’enregistrement. D’autres champs textes peuvent apporter des informations supplémentaires : Notes, _Curatorial’s Remark_s, Label Text (cartel d’une exposition), Historical Attributions (registres) et Texts Entries (extraits de textes publiés). Champ Subject – mots-clés et descripteurs iconographiques : Exemples :
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Merci @Christian-McCord pour ces nombreux exemples! I have quickly looked at them, and it helps to define what we need to describe actors within images. There are three ways of documenting the subjects of Propositional Object (that contain texts, images, etc.). By a more general property
The property In the pattern for image description, the only two properties needed are, in my opinion, P138 to identify any entity that is depicted, and P129 when the subject(s) of the visual item has(have) to be documented. What belongs to the subject of is merely an entity depicted is decided by the cataloguer. In the case of example 6 (M2009.80.15), one option would be to have:
The distinction between the mode of representation of an actor and the subject or representation of concepts can vary depending on the cataloger. In the case of the example "moustache" of image M2017.46.2.4533 or "smoking" of M2000.95.1, it could either be possible to document the mode of representation of an actor (the person is represented with a moustache or drinking) but it could also be possible to document that those visual items represent the occupation of smoking (M2000.95.1) or has as one of its subjects "moustache" (M2017.46.2.4533). We will be able to discuss more on the next meeting on the 4th of March |
From the discussions at the semantic committee on the 4th of March, a common agreement on the pattern for Images has been found.
The modifications of the pattern have been made in the TM 2.1, except for the description of images and sources, as it will be discussed and decided in other issues. Therefore, this issue is closed. |
For the moment we haven't found any solution to model an pattern that depicts images, and makes a difference between the URL of the image, the digital image, the original physical image if it exists, and the link to the actor.
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