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Guides to Quality in Visual Resource Imaging

Over the past several years, a number of publications listing best practices and guidelines for scanning have emerged from institutions engaged in digital imaging projects. Many of these guidelines are well written and have contributed significantly to understanding the imaging process; however, they are by nature institution-specific and often reflect local needs and decisions. Fortunately, we now have a series of guides that address issues of quality in a broad context. The Guides to Quality in Visual Resource Imaging, divided into five sections and written by four authors, discusses the “science of imaging” – objective measures for quality in scanning devices, imaging systems, and image files – and how these measures can be integrated into imaging workflows. The guides do not make specific recommendations for image capture or imaging components as other guidelines do. Rather, they attempt to answer the hard questions of how to evaluate quality; how to ensure that high-quality images are produced in our work; and how to create images worth investing in over the long term. Although the language and subject of the guides is rather technical, helpful visuals are used when applicable (especially in the pieces by Williams and D'Amato), and readers are referred to other resources that explain complex concepts at greater length. All of the guides emphasize the importance of identifying the purpose and intended use of image files and how they influence critical decisions made in any imaging project. The purposes for which one is scanning and the audience for which one is scanning inform technical choices made at different stages of an imaging project, from planning to managing files long-term. Decisions made all along the digitization chain have an impact on the final product, its long-term value, and its potential use.