1. Developing a strategy for quality Ira Revels Digital Project Manager Cornell University Library

2. Session Goal Workshop participants will be able to assess image quality and implement a strategy for quality control assessment.

3. Session Objectives  Overview the Factors involving image quality control  Review Tasks and Methods for assessing image and metadata quality  Demonstrate image/metadata quality control methods  Pair Exercise

4. Learner Outcomes  Be able to Recognize image quality control factors  Understand and apply tasks and methods in the assessment of image quality  Perform QC calibration methods on equipment and using QC Assessment survey guidelines

5. Overview of QC Factors  Factors involved in achieving image and metadata quality Strategy based on project goals Reference point Scope and methods of your quality review QC environment System performance Codify your procedures 8/8/2015Digital Imaging Workshop 5

6. QC Inspection Tasks & problems  Image Capture Halftones ○ Moiré patterns Grayscale images ○ Contrast enhancement ○ Histogram Equalization ○ Threshold (loss of distinct lines) Poor image quality ○ Uneven lighting, distortion, out of focus ○ Skew Missing/duplicated pages ○ Human operator error

7. QC Inspection Tasks & problems  Text Recognition Positioning ○ Orientation Segmentation ○ Incorrect region types or ranges  Metadata Incorrect metadata Improper use of element standard

8. Quality Assessment Methods  Image capture > manual correction through software  Poor image quality > manual calibration, auto-sharpen, auto de-screen filter, manual cropping, enhancement through software  Incorrect image segmentation > manual correction through software  Incorrect metadata > manual correction and find & replace (automated) correction through software

9. Metadata Quality Assessment  Automated correction can apply to the following tasks: Incorrect entry > find and replace  Manual correction can apply to the following tasks: Metadata entry using Dublin Core Misinterpretation of element standards Incorrect file naming

10. Metadata QC Examples

12. What are we doing about image quality assessment? 8/8/2015Digital Imaging Workshop 12

13. What are we doing about quality assessment?

14. Exercise  Manual Calibration  Applying Quality Control Assessment Survey methods Go to http://hbculibraries.org/docs/basic_production_steps_v3.1.pdf http://hbculibraries.org/docs/basic_production_steps_v3.1.pdf ○ On your desktop open the folder called “Enhancement Exercise” ○ Open the TIFF image and ○ beginning with # 9 on the Production Steps follow the directions for using the histogram tool.

15. Bibliography  Kenney, A.R. and Rieger, O.Y. Moving Theory Into Practice: Digital Imaging for Libraries and Archives. 2000. Research Libraries Group.  The Library of Congress. “Quality Review of Document Images: Internal Training Guide.” National Digital Library Program. September 1996. Available online at: [http://lcweb2.loc.gov/ammem/award/docs/docimqr.html]http://lcweb2.loc.gov/ammem/award/docs/docimqr.html  Lin, X, “Quality Assurance in High Volume Document Digitization: A Survey.” Proceedings of the Second International Conference on Document Image Analysis for Libraries, Lyon, France, April 2006, pp. 312-319.