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Digitization - Basic questions
 

Digitization - Basic questions

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Things to consider before, during and after a digitization project in an historical institution. Lecture by Daniel Jeller on the 13th September 2011 in Volterra.

Things to consider before, during and after a digitization project in an historical institution. Lecture by Daniel Jeller on the 13th September 2011 in Volterra.

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    Digitization - Basic questions Digitization - Basic questions Presentation Transcript

    • DigitizationBasic questions
    • What is digitization?• The translation of analogue data into digital data• The process of taking a digital image of something• The creation of a digital representation of something
    • Why digitize? ?
    • Phases1) Initial reflections2) Preparation phase3) Metadata creation4) Actual digitization5) Postproduction6) Long-term storage
    • Initial reflections• What do I want to digitize?• Why do I want to do it?• Do I already have the necessary metadata?• What safety precautions are necessary?• Do I want to digitize myself or hire a company?• What will happen with the digital object, once produced?
    • Technical reflections• Image format (TIFF, JPEG, JPEG2000,…)• Image quality (Resolution, Image compression)• Equipment (Scanner vs. Digital Camera)• Storage space (webhosting?)• Long-term storage• Filename (Human vs. Computer readable)
    • Scanner vs. Digital CameraScanner Digital Camera• Variable resolution • Constant resolution• Lower speed • High speed• Mainly for flat objects • Higher adjustability
    • Metadata for DigitizationWhy is this important?• Every digital object has to be identifiable• Most file systems only permit unique names• Changes to filenames are difficult to make after digitization
    • Preparation• Enough space• Constant indirect lighting, no direct sunlight• Tables for preparation• Enough power outlets
    • Digitization• Speed vs. Quality• Number of people depending on source material• Storage of sources during the night• Delivery of new sources• Quality control• Image postprocessing
    • Source material• Flat surface • Book• One sheet • Possibly very large• Possibly folded • Possibly difficult to• Possibly packaged open
    • File namingHuman readability Computer readability“HHStA_AUR_16890201_r.jpg” „7c7a1400-dd12-11e0.jpg“• Easy to read and share • Can be created quickly• Has to be created by hand before digitization• Easy to make mistakes • Has to be copied, not• Temptation to make entered by hand changes later on • Doesn’t mean anything • Can stay the same regardless of metadata
    • Postproduction• Image editing (cutting, compression,…)• Quality control (missing images)• Preparation for storage (file organization)