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Comprehensive Guide to Digital Imaging and Metadata Management

The Califa Digital Symposium addresses critical imaging and technical issues related to digitizing collections. Key topics include media/object resolution, bit depth, and file formats, focusing on best practices for digitization to ensure reliability and quality. The importance of adding structured metadata for effective collection management is emphasized, enhancing cataloging, administrative, and technical aspects. The symposium also covers archiving strategies, including standardized formats and maintainability practices, enabling organizations to organize, preserve, and present their digital assets effectively.

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Comprehensive Guide to Digital Imaging and Metadata Management

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  1. Califa Digital Symposium Imaging and Technical Issues • Digitizing • Adding Metadata • Collection Management • Archiving and Maintainability • Find, display, print

  2. Califa Digital Symposium Capture

  3. Califa Digital Symposium Imaging and Technical Issues • Digitizing • Determine media/object concerns • Resolution • Bit depth • File Format

  4. Califa Digital Symposium Imaging and Technical Issues • Digitizing • Determine media/object concerns • Original or surrogate (halftone)‏ • Physical size of the analog object • Equipment limitations • Bindings, mounts, casings • The area of interest (AOI)‏

  5. Califa Digital Symposium Imaging and Technical Issues • Digitizing • Resolution • Determine size of finest details • Set sufficient to capture finest details • Enough is enough • Get enough on the first shot

  6. Califa Digital Symposium Imaging and Technical Issues • Digitizing • Bit depth • 1bit 2 colors (black/white)‏ • 4bit 16 colors (palate)‏ • 8bit 256 colors (palatte)‏ • Humans distinguish 10 million colors • 24bit 16.7 million colors (8bits per rgb channel)‏

  7. Califa Digital Symposium Imaging and Technical Issues • Digitizing • File Format • Native/Raw of the device • Open known standard format • Ability to add metadata into the file • TIFF, JPEG, PDF, JPEG 2000, PNG • TIFF just TIFF

  8. Califa Digital Symposium Capture 150dpi 600dpi 8x10 print 7.6 megapixel 4x4 negative 24x36 Poster 35mm SLIDE 240ppi E-Size Engineering Drawing 3000 lines One size does not fit all.

  9. Califa Digital Symposium Inform

  10. Califa Digital Symposium Imaging and Technical Issues • Adding Metadata • Descriptive (cataloging/keywords)‏ • Content/Folksonomy/Thesauri • Administrative (rights/management)‏ • Technical (format/resolution)‏ • Structural (page/chapter/volume)‏

  11. Califa Digital Symposium Imaging and Technical Issues • Adding Metadata • External storage • Must maintain links over time • Internal storage • Travels with the digital object • Can recreate an external database

  12. Califa Digital Symposium Imaging and Technical Issues • Collection Management • Create collection level metadata • Augment object metadata • Organize for patron use

  13. Califa Digital Symposium Imaging and Technical Issues • Archiving and Maintainability • Standardized formats (migration)‏ • Full resolution images (eyes on the prize)‏ • Use of checksums (robotic review)‏

  14. Califa Digital Symposium Find

  15. Califa Digital Symposium Imaging and Technical Issues • Find, display, print • Indexing • Web distribution • High quality prints

  16. John Sarnowski • Director • john.sarnowski@ResCarta.org • 608.566.5966 • www.ResCarta.org Califa Digital Symposium

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