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Evaluating Imaging Quality for Federal Digitization: A Comprehensive Approach

This presentation by the Still Image Working Group of Federal Agencies Digitization Initiative outlines a roadmap for evaluating image quality, defining content categories, imaging objectives, measures of quality, and standard methods to derive measures. The focus is on creating tools to assess image performance and quality, developing standards for performance measurement, and utilizing tools like the Digital Image Conformance Evaluation (DICE) System. For more details and to contribute suggestions, visit http://digitizationguidelines.gov/.

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Evaluating Imaging Quality for Federal Digitization: A Comprehensive Approach

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  1. EVALUATING IMAGING QUALITY Federal Agencies Digitization Initiative – Still Image Working Group Presented by Michael Stelmach Library of Congress, Office of Strategic Initiatives March, 2009

  2. The Challenge • Define Content Categories • Define Imaging Objectives • Decide on Measures of Quality • Identify Standard Methods to Derive Measures • Design Tools to Evaluate Image Performance and Quality • Create Standard Methods of Evaluation

  3. Progress • Detailed definitions established for content categories and imaging objectives • Performance measures to be captured and defined (current) • Performance measurement standards identified • Tools developed to validate required image performance measures to actual values

  4. Roadmap to Image Requirements – Content and Objectives Combined with…

  5. Roadmap to Image Requirements – Performance Measures

  6. Advances Image Specs From • Color vs. Monochromatic • Bit Depth • Pixel Density

  7. To…. Specific to content and objectives…

  8. Example of Concept Requirements Matrix

  9. Image Performance Measure – Tools • Digital Image Conformance Evaluation (DICE) System • Targets providing known references • Device Target – Imaging Device Performance • Object Target – Actual Image Quality • Evaluation/Validation Software – LabVIEW-based • Data export for use in SQC/SPC

  10. Device and Object Targets

  11. Object Target in Use

  12. DICE Software – Main Panel

  13. DICE – QC Summary Panel

  14. More to Come… To keep up with our progress and submit your suggestions, please visit http://digitizationguidelines.gov/

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