Yesterday was the first day of our third PZ Conservation training day at the Cornish Studies Library in Redruth, Cornwall. It was looking at ways to prepare to digitise your archival collections, focusing in particular on bound and flat collections.
As well as informing the attendees about how to identify
problematic issues within their collections we covered key preparatory steps
to take when planning a digitisation project. We also gave the group a chance
to make and use their own re-moistenable tissue. This is a simple repair
technique commonly used for conservation of water-sensitive materials such as
paper and parchment.
Liz helping some of the attendees out with their remoistenable tissue
Digitisation is fast-becoming a popular solution for
safe-guarding a vast variety of different collections. It can increase accessibility
to the collections as well as helping with the preservation by limiting the
amount that the collection needs to be handled.
There are a lot of things to consider however when planning
your digitisation project including the need to survey, what equipment you will
need and how you are going to store and handle your data.
Surveying:
Depending
on how large your collections are you may want to conduct a survey of the
material you wish to digitise.
This can….
- Give you a better idea of the condition of your collections. What will be able to withstand the handling of being digitised.
- Help you to estimate how long the project might take.
-Highlight potential practical obstacles- large format material, unusual shapes or structures which may not easily lend themselves to being photographed or scanned.
- Give you a better idea of the condition of your collections. What will be able to withstand the handling of being digitised.
- Help you to estimate how long the project might take.
-Highlight potential practical obstacles- large format material, unusual shapes or structures which may not easily lend themselves to being photographed or scanned.
Equipment & Scanning Station:
The Camera/Rostrum set up we have at PZ Conservation
SPACE-
Along with
deciding which equipment to use you must make sure you have adequate space. The
Library of Congress in the states recommends that your table space (not
including your scanning equipment) is 6 times the size of the largest object
you are scanning. This is obviously in an ideal world and not always
achievable- but you should consider having space to put the objects as they are
being imaged- as well as space for their housing if they have any- and space to
turn object over if necessary.
LIGHT-
You must
make sure your station is sufficiently lit. But try to ensure you have quite
good ventilation because heat build up can damage heat-sensitive materials like
leather, parchment, photos or prints.
Handling
Data:
In order to
apply for funding for digitisation projects your images must comply with
international open source standards.
Metadata in
case you don’t know is data about data. So you can have an image and attach key
words which can be used during searches- things such as author, material,
binding etc etc.
DUBLIN
CORE: Internationally recognised standards for database metadata.
It means
that if your images went into another database then the same search terms would
apply across the different projects.
You must
also make sure that your file format complies: TIFF is the recommended file format,
which is an image file that is not compressed.
(A JPEG is
a compressed file, which means that not all the data is stored in the file)
Depending
on the size of the collection you are digitising you will need to consider a
sustainable storage solution for your data.
If a single TIFF file is 18MB, then one 200 page binding will take up 7GB of space!
If a single TIFF file is 18MB, then one 200 page binding will take up 7GB of space!
OMEKA is a free, online, open-source, web publishing
platform. It is specifically designed for use by non-IT experts, who work in
the heritage sector. You can also use it to create online exhibitions.
If you are
thinking of starting a digitisation project, here are a few good places to
begin doing some research:
Books:
Preparing Collections for Digitisation by Buelow, Anna & Ahmon, Jess. Facet
Publishing, (December 2010)
Managing the Digitisation of Library, Archive and Museum
Materials by Youngs, Karla. British
Library, National Preservation Office (2001); London
Cedars Guide to Digital Preservation Metadata by Day, Michael. Leeds: Cedars Project, March 2002.
Websites:
http://www.jiscdigitalmedia.ac.uk/digitisation
- This company, who are based in Bristol, provide very clear guidance about
digitising analogue media (mostly audio, video and photography). It has very
comprehensive advice about managing the images and metadata standards as well as
choosing your equipment and the advantages and disadvantages of each system.
They also offer further training on digitisation which covers using scanners
and SLR imaging systems, intellectual property and Metadata to an accredited
standard.
http://www.nationalarchives.gov.uk/information-management/projects-and-work/guidance.htm
- A very useful resource which provides access to a series of guidelines
regarding data management of digitisation standards.
http://crl.acrl.org/content/63/5/388.full.pdf
- Toward Developing a Framework of Cost Elements for Preserving Authentic
Electronic Records into Perpetuity by
Shelby Sanett. An interesting and comprehensive article which looks at
budgeting for digitisation projects.
http://omeka.org - OMEKA
(free, online, open-source, web publishing platform)
http://dublincore.org -
Dublin Core (metadata interoperability standards)
http://www.porthcurno.org.uk/page.php?id=328
- Local Cornish Digitisation Project: George Spratt Diaries, Porthcurno
Telegraph Museum. Part of the Connecting Cornwall project, a great example of a
small-scale digitisation project.


















