Difference between revisions of "SUNScholar/Digitisation"

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=Objectives=
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<center>
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The objective is to convert to digital format, any media, be it print or old digital storage containers, using digital scanning equipment and scanning services.
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'''[[SUNScholar/Practical guidelines for starting an institutional repository (IR)|Back to Guidelines]]'''
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'''[[SUNScholar/Repository_Preservation|Back to Repository Preservation]]'''
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</center>
  
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The resultant digital object must adhere to the following:
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==Introduction==
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# '''<font color="red">Use an uncompressed bitstream for storage.</font>'''
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In order to populate the digital research repository with print research material one has to digitise the print material first.
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# '''<font color="red">Use open digital formats with no patent liability and which have open published standards.</font>'''
 
  
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For more information, see: http://en.wikipedia.org/wiki/Digitizing
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The question, therefore is... how to proceed with the digitisation process in an orderly and managed manner?
  
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=Library Policy re Digitization=
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<font color="red">'''Watch the short video below'''</font>
  
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Unfortunately the library does not have sufficient capacity at this stage to provide digitization services. Digitization conducted by the library is mainly to address internal needs. We can - however - provide advice, some basic training or share best practices when required.
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<html5media width="560" height="315">File:Brewster_kahle-_digitize-everything.mp4</html5media>
  
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Please go ahead as follows:
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==Archival Digital Objects==
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In order to provide a high quality service for current and future users it is recommended that the process of digitisation produces the best possible digital copy of the original print item. However it may not be practical to deliver these high quality digital objects publicly since they may be very large in size, therefore you may need to store these high quality digital objects on an internal platform and only make digitally compressed versions available publicly. For the purposes of this wiki help page, the high quality digitised object is referred to as the "archival digital object".
  
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# Dept. purchases its own scanner equipment and the necessary software, and appoint someone to do the scanning if volume requires such a person.
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==Digitisation process==
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# The dept. approach an external institution to assist. Please see below.
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===Step 1===
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''Determine the scope of the project by asking the following questions:''
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#What will be digitised?
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#[[SUNScholar/DigitisationEquipment|Who will perform the actual digitisation?]]
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#How long will the digitisation take?
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#[[SUNScholar/Digitisation/Digital_Formats|What standards will be applied to the resultant archival digital objects?]]
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#And finally, what will it cost to digitise the identified items, in the appropriate time with the appropriate digital object standards?
  
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=[[SUNScholar/DigitisationEquipment|Digitisation Equipment and Services]]=
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===Step 2===
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''From the scope defined above, determine if there is capacity to store and manage the [[SUNScholar/Preservable_Digital_Objects|resultant archival digital objects]] in the long term by asking the following questions:''
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#How and where will the resultant archival digital objects be stored?
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#Is there enough archival storage capacity for the digital objects?
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#Who will curate the provenance of the resultant archival digital objects, in the short and long term?
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#[[SUNScholar/Disaster_Recovery|How will we implement a disaster recovery system for the archival digital objects in storage?]]
  
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=[[SUNScholar/Digitisation/Digital Formats|Digital Formats]]=
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===Step 3===
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=Digitisation Guidelines=
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''Now that the items identified have been digitised and stored, the next step is to determine how the digitised objects are made available to users of the library by asking the following questions:''
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{| class="wikitable" border="1" style="text-align:center;1px"
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#[[SUNScholar/Copyright|Are there any intellectual property concerns regarding the digital objects?]]
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! Media type !! Resolution !! Bit depth !! Enhancements Allowed
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#[[SUNScholar/Digitisation/Digital_Formats|If the digital object can be made public, what digital format is appropriate for public consumption?]]
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|-
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#[[List_of_Repository_Software|What platform will be used for public dissemination of the digitised items?]]
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| Printed text || 300 dpi || Bitonal || Sharpening, descreening, cropping, deskewing, despeckling
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#[[SUNScholar/Capacity_Building/Digital_Repository_Content_Management|Who will submit the digital objects to the public platform?]]
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|-
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#[[SUNScholar/Metadata|What metadata standards will be applied to the digital objects stored on the public platform?]]
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| Rare/ damaged printed text || 400 dpi || 8-gray or 24 colour || Contrast stretching; Minimal adjustments for tone and colour
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#[[SUNScholar/Capacity_Building/Digital_Repository_Systems_Management|Does the public platform have enough storage capacity for the digital objects?]]
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|-
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#[[SUNScholar/Capacity_Building/Digital_Repository_Systems_Management|Does the public platform have enough computing capacity to deal with the number of anticipated users who will visit and download or view the digital objects?]]
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| Book illustrations  || 400 - 600 dpi with enhancement  || 8-gray or 24 colour; Bitonal || Contrast stretching; Minimal adjustments for tone and colour; Descreen/ rescreen, sharpen
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#[[SUNScholar/Disaster_Recovery|Does the public platform implement a disaster recovery system?]]
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|-
 
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| Manuscripts || 300 - 500 dpi with enhancement || 8-gray or 24 colour || Contrast stretching; Minimal adjustments for tone and colour
 
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|-
 
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| Maps and other oversized items || 300 - 400 dpi  || 8-gray or 24 colour  || Contrast stretching; Minimal adjustments for tone and colour
 
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|-
 
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| Graphic Art || 400 - 600 dpi  || 8-bit/ channel internal reduction  || Contrast stretching; Minimal adjustments for tone and colour
 
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|-
 
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|}
 
  
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;Please note:
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===Step 4===
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* All archival material to be digitised in tiff format
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<font color="red">'''To ensure these digital objects are preserved for future users of the library, the library top management should develop a [[SUNScholar/Repository_Preservation|digital preservation policy and action plans]].'''</font>
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* Tiff copy together with derivated png or any additional copies to be submitted to SUNScholar
 
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* Document provenance metadata:
 
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** dc.description.provenance e.g. Original scanned in at 600 dpi, 100% DigiBook 10000 RGB colour, downsized to 840 pixels in width, resolution 250. Web version done automatically by PhotoShop 7 software. Downloading time approx. 26 seconds. Date done March - April 2007.
 
  
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==Service Providers==
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*http://heritage.blogs.africamediaonline.com/training/the-digital-campus
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*https://en.wikipedia.org/wiki/Africa_Media_Online
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==Training==
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*http://dp.la/info/2015/10/07/new-self-guided-curriculum-for-digitization
  
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'''[[SUNScholar/IR|Back to IR Help]]'''
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==[[SUNScholar/References|References]]==
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*https://wiki.diglib.org/Digitizing_Special_Formats
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===[[SUNScholar/Digitisation/Digital Formats|Digital Formats]]===
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===[[SUNScholar/Preservable_Digital_Objects|Preservable Digital Objects]]===
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===[[SUNScholar/DigitisationEquipment|Digitisation Equipment and Services]]===
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===[[SUNScholar/Digitisation/Guidelines for scanners|Guidelines For Scanners]]===

Latest revision as of 12:28, 1 September 2016

Back to Guidelines
Back to Repository Preservation

Introduction

In order to populate the digital research repository with print research material one has to digitise the print material first.

The question, therefore is... how to proceed with the digitisation process in an orderly and managed manner?

Watch the short video below

Archival Digital Objects

In order to provide a high quality service for current and future users it is recommended that the process of digitisation produces the best possible digital copy of the original print item. However it may not be practical to deliver these high quality digital objects publicly since they may be very large in size, therefore you may need to store these high quality digital objects on an internal platform and only make digitally compressed versions available publicly. For the purposes of this wiki help page, the high quality digitised object is referred to as the "archival digital object".

Digitisation process

Step 1

Determine the scope of the project by asking the following questions:

  1. What will be digitised?
  2. Who will perform the actual digitisation?
  3. How long will the digitisation take?
  4. What standards will be applied to the resultant archival digital objects?
  5. And finally, what will it cost to digitise the identified items, in the appropriate time with the appropriate digital object standards?

Step 2

From the scope defined above, determine if there is capacity to store and manage the resultant archival digital objects in the long term by asking the following questions:

  1. How and where will the resultant archival digital objects be stored?
  2. Is there enough archival storage capacity for the digital objects?
  3. Who will curate the provenance of the resultant archival digital objects, in the short and long term?
  4. How will we implement a disaster recovery system for the archival digital objects in storage?

Step 3

Now that the items identified have been digitised and stored, the next step is to determine how the digitised objects are made available to users of the library by asking the following questions:

  1. Are there any intellectual property concerns regarding the digital objects?
  2. If the digital object can be made public, what digital format is appropriate for public consumption?
  3. What platform will be used for public dissemination of the digitised items?
  4. Who will submit the digital objects to the public platform?
  5. What metadata standards will be applied to the digital objects stored on the public platform?
  6. Does the public platform have enough storage capacity for the digital objects?
  7. Does the public platform have enough computing capacity to deal with the number of anticipated users who will visit and download or view the digital objects?
  8. Does the public platform implement a disaster recovery system?

Step 4

To ensure these digital objects are preserved for future users of the library, the library top management should develop a digital preservation policy and action plans.

Service Providers

Training

References

Digital Formats

Preservable Digital Objects

Digitisation Equipment and Services

Guidelines For Scanners

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