Message-Id: <200101250043.RAA25590@dns.ccit.arizona.edu> Date: Wed, 24 Jan 2001 15:34:06 -0900 From: Judith Terpstra <mailto:kiwi1@ALASKA.NET> Subject: Re: adminstrative metadata To: mailto:IMAGELIB@LISTSERV.ARIZONA.EDU
<pre>
We are at the start of a two year project to digitize and index a
collection of newspaper photographs. We are scanning Black & White
photographic prints on an Epson Expression 836L flatbed scanner. We are
currently setting up our scanning workflows and deciding on which
administrative metadata to include and how to include it. The first
decision we had to make was whether to put the admin metadata in the
TIFF header, or in the database used to index the image. We decided to
use the TIFF header so that the admin metadata is tied to the image itself.
We use Photoshop's File Information: Caption feature to record the admin
metadata that is NOT automatically recorded in the TIFF header. We
discovered that information in File Information: Caption is recorded in
the 270 "Image Description" tag in the TIFF header. We made a decision
not to repeat information that is automatically recorded in the TIFF
header such as Image Width, Image Length...
As Andrew points out - admin metadata fields can be very detailed. I
would really appreciate a discussion on what the essential pieces of
admin metadata are - the fields that must be included to ensure the
image can be managed and processed many years down the track. Of course
sometimes this will vary, with national institutions requiring much more
detailed information than smaller organizations.
We record the following:
Format: e.g. Image\TIFF
Bit Depth/color: e.g. 12-bit grayscale
Color management software & version
Scanner make and model
Scanner software & version
Gray Scale Bar: Kodak Q-13
Date of Scan:
Scanning Technician
cheers
Judith
Judith Terpstra
Information Access
6921 Brayton Drive #210
Anchorage, AK 99507
Phone: (907) 349-7478
Fax: (907) 344-7958
Andrew Stawowczyk Long wrote:
> For one of our projects (Barton Papers Digitisation) at the National
> Library of Australia we use the following metadata (some of it already
> exist in TIFF tags):
>
> 1. Digital image ID
> An unambiguous identifier derived according to the specified rules from
> the Manuscript Section's numbering system
> 2.Manuscript ID
> An unambiguous identifier for the original item, most likely an accession
> number.
> 3.Sequence number
> When the item consistes of multiple parts such as pages in a bound
> volume, the sequence of those pages is recorded here
> 4.Number in Sequence
> Total number of images in the item sequence
> 5.Role
> Describes expected use of image file, or purpose format for which it was
> created. (eg. 'master', 'display')
> 6. File format
> Describes the format of the image file (eg. TIFF)
> 7.File format version
> Describes the version of the format of the image file
> 8.Storage size
> Records the size of the file in Bytes
> 9. Encoding structure
> For a TIFF file, refers to the byte order according to the two schemes
> included in the standard
> 10. Resolution
> Records the Spatial resolution at which the image was produced in dots
> per inch(dpi)
> 11. Image dimensions
> Describes the size of the image in pixels
> 12. Bit depth (Synonyms: Pixel depth, tonal resolution)
> Measurement of the number of bits per pixel.
> 13. Colour space
> Describes the colour space used in defining the image
> 14.Colour management system
> Describes the colour management system
> 15. Image orientation
> Defines the intended physical orientation of the image
> 16. Critical hardware
> Brand and model of camera/ scanner used, and any other hardware critical
> to the production of the digital image
> 17. Scanner resolution
> Maximum optical resolution of scanner/camera
> 18. Software and Version
> Software and Version of software used to create the final image
> 19. Batch ID
> Id of the processing batch that this image was part of
> 20. Digital image creator
> entity who created this digital image
> 21. Date.digital imageCreated
> The date of the first creation of this digital image
> 22. Record creator
> The entity responsible for creating the record
> 23. Date.RecordCreated
> The date the record was created
> 24. Record modifier
> The entity responsible for last updating the record
> 25. Date.RecordModified
> The date the record was last updated
> 26. Stitched
> Indicates whether the image has been recombined from seperate scanned
> parts of the original
> 27. Stitching software and version
> Indicates the software and version used to stitich the image together
> 28. Comments
> Irregularities, faults or quirks associated with producing this image
> 29. Image Source
> Describes the source item from which this digital image was made
>
>
> Regards
>
> Andrew Stawowczyk Long
> Manager, Photographic Services
> National Library of Australia
> mailto:anlong@nla.gov.au
>
>
>
>
> Anthony Troncale wrote:
>
>>> ----------
>>> From: Anthony Troncale[SMTP:mailto:TRONCALE@AMNH.ORG]
>>> Sent: Thursday, January 25, 2001 3:34:52 AM
>>> To: mailto:IMAGELIB@LISTSERV.ARIZONA.EDU
>>> Subject: adminstrative metadata
>>> Auto forwarded by a Rule
>>>
>> Imagelibbers:
>>
>> I am interested in what fields other institutions are using for
>> administrative metadata of digital image capture.
>>
>> Examples might be: what type of camera/flatbed was used, lighting,
>> bit-depth, color profile data, film-type if scanning from film, pixel
>> width/height, etc.
>>
>> Thanks in advance.
>>
>> Anthony Troncale
>> Digital Collections Librarian
>> The American Museum of Natural History
>> 79th St. at Central park West
>> New York, NY 10024
>> (212) 769-5421
>> mailto:troncale@amnh.org
>
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