The Technical Advisory Service for Images (TASI) was established by the Joint Information Systems Council (JISC) to advise and support the Higher Education community on the digital creation, storage and delivery of image based information. The objectives of TASI are to:
Careful planning is needed when building a digital image archive, as this will allow the creation of an effective, user-friendly archive, whilst avoiding costly and time consuming mistakes. It is not (perhaps) widely recognised that digitisation of the primary source material is a small part of creating a digital archive. There are other issues that need to be considered, such as copyright clearance, metadata issues and project management that can have a severe impact on both resources and time. Decisions made at the beginning will impact on other aspects of the project and could thus jeopardise the success of the venture as a whole. It is recommended that projects undertake a feasibility study to determine cost, benchmarks and quality assurance.
TASI has identified that the Framework which defines the creation of digital image archives can be divided into three phases:
Data Capture and Creation
Data Access and Delivery
Data Collections Management
Image handling and preparation
Search and retrieval
Database creation and system design
Image capture: hardware and software
Workflow and procedures management
Formats and compression
Copyright, IPR and ethics
Metadata: indexing and cataloguing
Digital preservation: storage and archiving
Issues surrounding resource capture/creation, resource delivery/access and collections management all need to be considered before widening the discussion to the ways in which such resource material can be effectively used to support teaching and research. Whilst some of these issues are obvious, experience has shown that all too often critical issues are neglected during the early stages of such a project thus jeopardising the long-term use of digital resources.
Having identified the key areas for consideration, TASI is developing the Framework to provide comprehensive advice on building an image archive. In the course of this development, TASI carries out a number of activities:
One workshop that has helped the development of the TASI Framework was held in Warwick in June 1998. This Digital Image Library Workshop bought together representatives from 18 digital imaging projects to discuss five main themes:
From these discussions the digital imaging community recognised that there were areas of strength (knowledge) and weakness (some knowledge but requires further work). From these five subject areas the groups made recommendations that would further develop the Framework. These will be incorporated into TASIs work so that the Framework is fully developed and thus extensive information pertinent to the building of a digital image archive is available to the TASI user community.
Providing impartial advice and supporting our users is the top priority for TASI. TASI advice comes from practical experience of building digital image archives, surveying other image based projects, keeping abreast of current practices and maintaining a watch on future developments. With these activities TASI aims to provide the best possible advice.
TASI would like to hear from you if:
TASI can be contacted at:
The Institute for Learning and Research Technology,
8, Woodland Road,
Tel. 0117 928 9835.
Please ask for Karla Youngs (TASI Manager) or Alan Lock (Technical Research Officer).
Visit our Web site at: