[OAI-implementers] Exposing thumbnails

[CHARLES, Daphne]

Many thanks Muriel for such a comprehensive response, and also to everyone else who has replied on and off list.
 
Best regards
 
Daphne

________________________________

From: Muriel FOULONNEAU [mailto:muriel.foulonneau at ccsd.cnrs.fr]
Sent: Tue 18/09/2007 17:43
To: CHARLES, Daphne
Cc: oai-implementers at openarchives.org
Subject: Re: [OAI-implementers] Exposing thumbnails



Hi,

At the University of Illinois, we have worked as a service provider on
several possibilities :
- asking data providers to include a URL to a thumbnails in their
metadata record. The easiest way was to use a thumbnail element, used by
the National Library of Australia for their Picture Australia Service.
That's DC + that element
- asking people to provider a richer representation of their resources,
using a specific format which allows to express the different "views" of
a picture (thumbnail, large ...). A similar approach can be taken with
DIDL for instance or METS records. The work on this approach was part of
the DLF-Aquifer project,
http://www.dlib.org/dlib/october06/cole/10cole.html. The format does not
really matter, but it is to propose a richer representation of resources.
- a 3rd approach consisted in using the URLs found in the records and
parse the pages to either recognize or create a thumbnails from the data
providers Websites (with their kind permission :-)).
https://www.ideals.uiuc.edu/bitstream/2142/72/3/Assets.ppt.pdf  and a
poster "An OAI-PMH Based Thumbnail Capture & Delivery Service"
http://oai5.web.cern.ch/oai5/images/posters/31-Cole.pdf.
The following paper gives an overview of the issue
http://www.dlib.org/dlib/january06/foulonneau/01foulonneau.html

Most service providers do not use thumbnails because they do not deal
with pictures only. But Picture Australia is definitely a good example
of SP dealing with pictures and having a clear interest in showing
thumbnails. Aquifer uses thumbnails, American West as well, the CIC
metadata portal, the IMLS digital collections and content. All those
examples have indeed agreement between data providers and service
providers. I am not certain of last developments, other people could
complete. I do not think there are generally accepted protocols.

Hope that helps.



CHARLES, Daphne a écrit :
> Hi,
> 
> I've noticed that some service providers include thumbnails in
> their search results.  I'd quite like to make this facility available
> for any harvesters of our repository who wish to use it, but can't
> find any specific references in any of the OAI DC guidelines
> explaining what the XML should look like.
> 
> Can anyone tell me if there an accepted protocol for exposing
> thumbnails, or is it something agreed between individual repositories
> and harvesters?
> 
> Many thanks
> 
> Daphne Charles
> Development Team Leader (Web)
> English Heritage
> NMRC, Kemble Drive
> Swindon SN2 2GZ
> Tel 01793 414894
> 
> 
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--
Muriel Foulonneau
Centre pour la communication scientifique directe
Centre National de la recherche scientifique
IN2P3
12-14 bd Niels Boehr
69100 Villeurbanne
Tel: +33 (0)4 72 69 52 85
muriel.foulonneau at ccsd.cnrs.fr




_________________________________________________________________________________
This e-mail (and any attachments) is confidential and may contain personal views which are not the 
views of English Heritage unless specifically stated. If you have received it in error, please delete it
from your system and notify the sender immediately. Do not use, copy or disclose the information in 
any way nor act in reliance on it. Any information sent to English Heritage may become publicly available.

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