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Digitization - PowerPoint PPT Presentation

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Digitization. Basic 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?. ?. Phases. Initial reflections Preparation phase

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Basic questions

what is digitization
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
  • Initial reflections
  • Preparation phase
  • Metadata creation
  • Actual digitization
  • Postproduction
  • Long-term storage
initial reflections
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
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 camera
Scanner vs. Digital Camera


Digital Camera

Constant resolution

High speed

Higher adjustability

  • Variable resolution
  • Lowerspeed
  • Mainlyfor flat objects
metadata for digitization
Metadata for Digitization

Why 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
  • Enough space
  • Constant indirect lighting, no direct sunlight
  • Tables for preparation
  • Enough power outlets
  • 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
Source material
  • Flat surface
  • One sheet
  • Possibly folded
  • Possibly packaged
  • Book
  • Possibly very large
  • Possibly difficult to open
file naming
File naming

Human readability

Computer readability


Can be created quickly before digitization

Has to be copied, not entered by hand

Doesn’t mean anything

Can stay the same regardless of metadata


  • Easy to read and share
  • Has to be created by hand
  • Easy to make mistakes
  • Temptation to make changes later on
  • Image editing (cutting, compression,…)
  • Quality control (missing images)
  • Preparation for storage (file organization)