Here are the handouts from the CNI session that I mentioned in my previous
message.
jennifer
_________
Describing Image Files: The Need for a Technical
Standard
Coalition for Networked Information
Fall Meeting
Orlando, Florida
November 30, 1994
Howard Besser Visiting Professor
School of Information and Library Studies
University of Michigan
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Jennifer Trant Manager, Imaging Initiative
Getty Art History Information Program
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MAJOR QUESTIONS
** What information should be recorded about digital image
files?
** Where should image files be documented? What information
must be placed in the image header, and what can be placed
in an accompanying text record?
** What controlled vocabularies exist to record this
information? Have fields been identified to store it?
** Where can we use existing standards? Adapt existing
standards to our needs? Work with other bodies to ensure
the standards they adopt will meet our needs? Set the
standards ourselves?
DRAFT OUTLINE OF
GENERAL KINDS OF INFORMATION NEEDED
Information to view the image
- type (bit-mapped, vector, video)
- format (TIFF, GIF, JFIF, PICT, PCD, Photoshop, EPS,
CGM, TGA, ...)
- compression (JPEG, LZW, QuickTime, ...)
- dimensions and dynamic range
- CLUT
- Color metric (CMYK, RGB, ...)
Information about the quality and veracity of the
image
- source image digitized
- the source of that image (recursively)
- source type
- source ID
- institution responsible for creation of the digital image
Information about the scanning process
- light source (full spectrum, infrared, ...)
- resolution
- dynamic range
- type of scanner (for color re-balance)
- date of scan
- scanning personnel (in-house information)
- a journal/audit trail of what is done to each image
and when it was done (crop, color, adjust, ...)
- Digital signatures, authentication, ...
Description of depiction/surrogate
- VRA Data Standard and terminology for perspective,
position, orientation, aspect...
- linking between various views of the same original
Description of original object
- AITF Categories for the Description of Works of Art
- Systematics
- AACR2
- Other content standards...
Rights and Reproduction Information
- copyright of original, digital copyright, surrogate copyright
- name of rightsholder
- use restrictions (viewing, printing, reproducing, ...)
Location Information
- URNs, URLs, URCs
- different versions (browse, hi-res, medium res)
derived from the same scan
POSSIBLE ORGANIZATION
A recent meeting of the Computer Interchange of Museum
Information (CIMI) Consortium organized these in the
following way (with the header information being a subset of
the technical data fields):
Image File with Header
Information needed to view the image
Rights and Reproduction Information
Image Technical Data Fields
Information to view the image
Information about the quality and veracity of the image
Content
Description of depiction/surrogate, surrogate history
Description of original object
Rights and Reproduction Information
Location
Location Information
Note: This first schema may need further refinement and
elaboration. If you are interested in participating in these
discussions, please contact J.Trant [[log in to unmask]]
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