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Imaging and Technical Issues

Imaging and Technical Issues. Digitizing Adding Metadata Collection Management Archiving and Maintainability Find, display, print. Capture. Imaging and Technical Issues. Digitizing Determine media/object concerns Resolution Bit depth File Format. Imaging and Technical Issues.

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Imaging and Technical Issues

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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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