Dear All,
    Please forgive a contribution from a geriatric. As long ago as 1987,
this writer was paid to undertake research upon all the issues for
digitising sound collections, and a pilot project was set up. This included
attempts at digitising LP sleeves, as well as the sound inside. As a
copyright-deposit library, we in Britain were permitted to make copies for
reasons of preservation and access, and my report was published (I don't
have it here, so I can't give you a reference!)
    We transferred about twenty LPs and digitised their sleeves. Three
issues arose, which have not so far been addressed in this discussion :
(1) Aliassing occured between pixels and half-tone pictures, unless both
excellent equipment and viewing-conditions were assured, so the operator
could minimise the aliassing.
(2) The text (generally on the back of the LP sleeve) needed optical
character recognition, (a) so it might be translated, and (b) so it might be
sent down a wire to British Library listener, who might manipulate it to
make it more readable, or conduct a word-search. The OCR software was almost
impotent with proper nouns!
(3) Five years after we did those twenty sleeves, the software was out of
Peter Copeland
-----Original Message-----
From: Bill Walker/Amigos [mailto:[log in to unmask]]
Sent: 11 August 2003 15:02
To: [log in to unmask]
Subject: Re: [ARSCLIST] Scanning LP covers

 I read many of the messages regarding the issue of scanning LP covers.

In my opinion, an oversize scanner would be the simplest and most effective
option for your money.

In most digital imaging projects where digital cameras are used, the cameras
(or camera backs) alone can cost 10,000 dollars or more.  The lighting,
power supplies and a studio impervious to vibration are extras.   Often it
takes a minute or more to scan one object.  Even if you choose a less
expensive digital camera, you will still spend a great deal of time and
money ensuring that the lighting will be adequate enough to capture the
detail and color.   If you use a conventional camera and then scan the
slides or prints you will lose a lot of color fidelity in the translation.

Also, as in digital audio, it is best to scan at high resolution and then
scale down for other applications such as delivery on the web.

The beauty of a flat-bed scanner is that it has its own lighting source and
adjustable resolution.  A camera may have some zooming capability but the
resolution settings on a scanner are much more finely adjustable.   If you
plan to use these images in a printed publication, you will need very
high-resolution images.

I hope this helps,
Bill Walker
Imaging Field Services Officer
Amigos Library Services
14400 Midway Road
Dallas, TX 75244-3509
Phone: 800-843-8482 x153
Fax 972-991-6061
Email: [log in to unmask]


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