Managing Digitization Activities · 119
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Purdue University
Hardware &Software Process MetaData Image Capture Specifications
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Digital
Initiatives
Purpose
This document is designed to document the philosophy and decisions that have
been made regarding image capture procedures for archival images. It is
important to maintain a high level of image quality across projects and over
time. By documenting our decisions we hope to decrease the likelihood of
rescanning fragile archival materials. It is also important to choose digital object
formats that are likely to stand the test of time for long term preservation of the
Purdue Libraries archival resources.
Scope
Scanning and file format recommendations for:
Photographs, maps, graphic and text materials
Document hardware description
Document software description
Quality control, file naming, scanner and monitor calibration, targets and color bars, storing images,
and recording and verification of CD-ROMs
General Principles
Scan at the highest resolution for the type of original material
Scan at the highest quality the first time to prevent re-handling of delicate materials.
Create an archival copy of the images on high quality CD-ROM media.
Provide online access copies using NAS storage.
Create access copies stored on stable CD-ROM media.
Create meaningful metadata for image files or collections.
Monitor technology shift and copy to media as needed.
Document a migration strategy for maintaining access to all of our digital resources.
Scan original or first generation item wherever possible.
Minimize on-going costs in favor of one-time expenditures.
Toolkit
The Digital Initiatives Team has endeavored to create a hardware/software architecture that efficiently handles the
large files that will be generated by the project. By appropriately sizing our tools it is expected that labor costs will
be minimized.
Computers
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