Dear all
On Mon, 30 Jul 2001 12:58:21 -0700 Beth Lee Macdonald <[log in to unmask]>
wrote:
> There is an American Library of Congress standard for doing exactly
> this.
> The goals of the standard are to set technical standards for the
> digitization of the photos (i.e., what resolution, what compression
> schemes,
> what naming standards, what calibration standards, what storage and
> migration media) etc.
<snip>
Yes, this is so important and setting standards for any further
digitisation (if not already established) is imperative, however with
an already established collection of digital images (such as this one)
I would normally recommend that the images are left as they are (unless
they exist as high quality uncompressed tiffs). The danger of loosing
quality due to the inevitable "JPEGing a JPEG" scenario would seem to
make it a bad idea.
.
>
> Additionally, there is a specific types and standard format of "meta
> data",
> or descriptive data about each digital image that has been agreed upon.
<snip>
see
> http://lcweb.loc.gov/standards/metable.html
>
> So, the specific tool that one uses to database these images should, at
> least, be capable of meeting this LOC standard.
Unfortunately the LOC is only one standard.....of far too many.....At
TASI the sheer number of Metadata standards has caused us to prefer
calling them "Frameworks". It did seem like Dublin Core (aimed at
resource description for Web - http://dublincore.org) was going to be
able to gather enough support to be able to call itself a
standard.....but I fear support is now dropping.
At TASI our favorite is the VRA3 Core Categories developed by the
Visual Resource Association details of which can be found at:
http://www.vraweb.org
But it is hard to call any of these definitive standards. I do however
think it is imperative that you do work to one or other of them, but
try and choose a Metadata standard for which there are known and
published mappings from your core-categories to the elements of the
main big ones: Dublin Core, VRA, Marc.....and of course the LOC <G>
I normally advise, that it is like choosing a language to communicate
in....you want the language which most fits your project....but you
must make sure that you have the dictionaries to map your language to
"English" "French" and "Spanish" if you want to be sure that you can
communicate with everyone.......Hope that makes sense!
You can find further details about Metadata on the TASI site at:
http://www.tasi.ac.uk/pdf/metadata.pdf
http://www.tasi.ac.uk/pdf/metadata1.pdf
<snip>
cheers
eib
---------------------------------------------------------------------------------------
Ed I Bremner, TASI Senior Technical Research Officer
TASI - Technical Advisory Service for Images
Free help, advice and guidance for the
Further and Higher Education sector
http://www.tasi.ac.uk/
A JISC Service
---------------------------------------------------------------------------------------
|