Digitization
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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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Digitization

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Digitization

Digitization

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


Why digitize

Why digitize?

?


Phases

Phases

  • 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

Scanner

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


Preparation

Preparation

  • Enough space

  • Constant indirect lighting, no direct sunlight

  • Tables for preparation

  • Enough power outlets


Digitization1

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

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

„7c7a1400-dd12-11e0.jpg“

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

“HHStA_AUR_16890201_r.jpg”

  • Easy to read and share

  • Has to be created by hand

  • Easy to make mistakes

  • Temptation to make changes later on


Postproduction

Postproduction

  • Image editing (cutting, compression,…)

  • Quality control (missing images)

  • Preparation for storage (file organization)


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