dimanche, 06 avril 2008
A propos des images numériques et de leur stockage
Alternative File Formats for Storing Master Images of Digitisation Projects (pdf)
(source: Koninklijke Bibliotheek, Pays-Bas, mars 08)
This in-depth study by the Research and Development Department of the Koninklijke Bibliotheek (National Library of the Netherlands) found that the best alternatives for master digital images to uncompressed TIF files were JPEG 2000 lossless (53% storage savings) and PNG (40% storage savings). When the master digital image is also the distribution file, JPEG 2000 lossy and JPEG with greater compression were the best formats.
Via Current Cites (01/04/08)
20:20 Publié dans Dépôts institutionnels, Métadonnées | Lien permanent | Commentaires (0) | Envoyer cette note
| Tags : Images, JPEG 2000, PNG |
|
del.icio.us
|
|
Facebook
jeudi, 21 février 2008
Rapport: JPEG 2000
JPEG 2000 – a practical digital preservation standard? [ pdf ]
Un rapport publié par la DPC (Digital Preservation Coalition).
The report is aimed at organisations involved in the management and storage of digital information. The in-depth report will help archives, libraries and other institutions make informed decisions about JPEG 2000 format and their future storage needs.
JPEG 2000 can reduce storage requirements by an order of magnitude compared to an uncompressed TIFF file. Dr. Buckley says, “This new format has come at a time of heightened awareness about the access to digital documents. Any format that can assist archives and libraries to do this is welcome.”
13:45 Publié dans Archivage, Conservation/accès, Dépôts institutionnels | Lien permanent | Commentaires (0) | Envoyer cette note
| Tags : JPEG 2000 |
|
del.icio.us
|
|
Facebook