Preservation

Other/Project Specific Image [IMG-D99]

Record Type
Expected Use Distribution Copy
Product Name Other/Project Specific Image [IMG-D99]
Product Purpose

This number was changed to 99 to always keep it at the end of the list.

Determined by project needs

Nature of Source Material

Any digital preservation or reproduction master file.

File Properties Data Format

Determined by project needs

Capture Information

Determined by project needs

The image is always presented as a positive image regardless of its original polarity

Typical file size: Variable depending on project

Dependencies

Products are dependent on system capability to product them, including the availability of equipment, technological capabilities or limitations, staff resources, the size and scope of the request, etc. Acquiring additional resources to produce a non-standard desired product may be considered after a cost-benefit analysis and investigation into the availability of funding to meet project needs.

Other Information

Determined by project needs

Quality Control Quality Assurance and Quality Control for Digital Imaging Products

The Digitization Services Branch’s Quality Assurance and Quality Control (QA/QA) program is evolving as new tools and resources are acquired and implemented. We are moving towards more automated and integrated systems to assure the products we make meet the specifications outlined. Digital products created by the Digitization Services Branch are validated against standardized format specifications and signature files when possible. We use a variety of format specific batch evaluation and validation tools both open source and vendor supplied, to assure technical quality level specifications are met. All files, but especially distribution system specific files, are inspected for successful playback in a variety of tools and environments. Additional quality control workflows are in development.

Equipment/System Evaluation
NARA implements scheduled service and calibration protocols according to manufacturer recommendations as well as on an "as needed" basis.

Metadata
Embedded metadata: NARA is working on embedded metadata guidelines for all file types.
Technical metadata: NARA is finalizing technical metadata schemas for all file types.

Customer Level Evaluation / Order Completeness

NARA is developing an in house job tracking order system to better coordinate work at the Branch level.

Item Level Evaluation: Automated File Characteristics Analysis
Fixity: NARA is evaluating workflows to create and validate checksums for each digital file.

Rationale

Currently, the digital distribution copy options are generally the same for all still images regardless of the format of the original source material.

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