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Standards

Digitisation standards provide guidelines on resolution, colour space, and bit depth for the production of a master image file [1] and a derivative image file [2] below. To deposit the digital images for long-term retention, CUHK Library digital collections adhere to the following requirements according to different sources of material. However, depending on the specific objectives of digital collections, adopting a higher resolution and special formats are desirable for some materials.

 

Printed Materials

Source Master image file format Derivative image file format
Bit depth Colour space Resolution Resolution Format
Book 24-bit RGB 400–600 dpi 200 dpi JPG
News clipping 1-bit Bi-tonal 300 dpi 150-300 dpi PDF
Newspaper 24-bit RGB 300 dpi 300 dpi TIF, HOCR
Periodicals 24-bit RGB 300–600 dpi 300 dpi PDF
Manuscript 24-bit RGB 400–600 dpi 200 dpi JPG
Photograph 24-bit RGB 600 dpi 200 dpi JPG
Book cover 24-bit RGB 150 dpi < 100 dpi JPG

 

Thumbnail may be created for the purpose of quick preview of original image. The thumbnail images would use 256 colour and 15-30 dpi resolution.

 

Multimedia Materials

Source Master image file format Derivative image file format
Format Bit rate Format
Audio MP3 128 kbps MP3
Motion Video MP4 800 kbps MP4

 


 

[1] Requirement of Master Image File

  • Format: TIFF image (uncompressed image)
  • Colour: 24-bit RGB colour
  • Resolution: 300 dpi
  • Version: Tiff, version 5.0

 

Remarks:

      • 1:1 optical resolution without re-sampling; cropping the original book scanned images; single-page tiff
      • High-quality print reproduction
      • Archival purpose for long-term retention
      • Source for derivatives image file creation

 

[2] Requirement of Derivative Image File

  • Format: JPEG, PDF file
  • Colour: 24-bit RGB colour
  • Resolution: 300 dpi

 

Remarks:

      • Directly converted from the master file
      • General access
      • Compressed file format to reduce file size for fast download
      • Acceptable image resolution to be displayed for general research
      • Incorporate Metadata e.g. OCR, if necessary;

 


 

Disclaimer
The contents of this page neither serve as tender requirements nor digital guidelines addressing all technical issues. Should you need further information and guidelines, please contact us at digitization@lib.cuhk.edu.hk.

 

Digitization Service

The Library is pleased to offer the following digital services to advance learning and research of the University.  You are welcome to send your request to digitization@lib.cuhk.edu.hk with details of the digital service required and details of the request such as the format of the materials, number of items, tentative timeline and the contact point.

 

  1. Digitisation Service
  2. Depositing Digital Objects into Digital Repository
  3. Digital Project Planning and Consultation

 

Digitisation Service

The Digital Services Team usually creates digital collections from the library collections. We also seek external content from faculties and departments of the University which holds the materials and wish to share the digital images with the global research community via the Digital Repository (please refer to the open access policy). The materials can be text, pictures or multimedia. However, because of limited capacity of the team, the service is limited to small-scale projects that are of one-off nature. The cost will be borne by the faculty making the request. The turnaround time varies with the quantity and workload of the team. It will be negotiated on a case-by-case basis. We are pleased to offer On-demand Digitization service for scholars as well.

For large-scale projects, the service depends on the quantity involved, the timeline required, and the nature of the request.  The team is happy to discuss this with you on an individual project basis. The team will also help apply for University funding if needed.  

The service complies with the industry best practices and the digitization standards as stated here: http://repository.lib.cuhk.edu.hk/en/standards. The actual process of scanning will take place either in-house or out-sourced. If the materials or the digital images are donated to the Library, they will be properly catalogued in the library catalogue or the library archives.  You are also welcome to provide us with the specific metadata required.

 

Depositing digital objects into Digital Repository

If faculty already has digital files at hand or the materials are born digital, you are welcome to deposit them into the Digital Repository for open access or resource-sharing. The Digital Services Team will assess the digital images. If they are found appropriate for the Repository, the team will handle the conversion. The service is free.  However, owing to the limited resources, not all requests can be accommodated. Also, we will not offer any hosting of web sites.

 

Digital Project Planning and Consultation

The Digital Services team is also happy to provide free expert advice on:

  • appropriate hardware, software and procedures for digital projects
  • logistical support for your digitization projects such as sourcing of vendors, methods for quality control
  • assessment of whether an item is fit for digitisation

 

 

Digitisation Policy

The Chinese University of Hong Kong Library

Digitisation Policy 2015 – 2017

 


 

1. Introduction – Context and Vision
2. Goals and Drivers of Digitisation
3. Selection and Prioritization of Content for Digitisation
4. Digitisation Strategies
5. Access and Discovery
6. Digital Curation
7. Digital Archiving & Preservation
8. Promotion and marketing of digital collections
9. Governance and Implementation
10. Measurement of Success
11. Review of the Policy
Appendix

 


 

1. Introduction – Context and Vision

The Chinese University of Hong Kong Library (the Library) has started its digitisation program in as early as 1995. It has already built a substantial mass of millions of images in various subjects and disciplines ranging from religious, political, social, cultural, to literature. They are valuable digital collections for researchers and scholars of the University community and the public alike. To build on the acquired expertise over the past decades and to expand the Library’s digital collections in a sustainable manner, the purpose of this policy is to formalize the Library’s approach to its digitisation activities over the next three years in order to achieve the following goals as set out in the Library’s Strategic Plan 2013-2016.

  • Further realizing the potential of the digital collections already developed by the Library
  • Support research, teaching and learning programs of the University, in particular digital scholarship of the Library
  • Facilitate discovery and easy access to digital collections
  • Set the framework to evaluate, select and prioritize its digitisation activities

 

 

2. Goals and Drivers of Digitisation

Digitisation brings myriad of advantages to library users. By developing our digital collections, the Library aims to:

  1. Open up and improved users’ access to the Library’s collections – digitising the Library’s collections, especially those fragile or rare materials not fit for physical access, enables fast and convenient online access;
  2. Inspire new audience to access the Library’s collection;
  3. Enable further exploration of the content of the Library’s digital collections by new technologies such as data-mining and text-mining to facilitate researchers and scholars both in the University and worldwide to utilize the digital collections for research and teaching purpose and to support new research methods such as digital humanities;
  4. Provides better preservation of unique, rare and fragile materials by migrating them into digital format;
  5. Uncover the hidden treasures of the Library to enhance the discoverability and visibility of the Library’s collections to increase its use and research impact;
  6. Collaborate within and beyond the University community to create more digital collections that align with the mission of the University in particular; and,
  7. Continue to develop current digital contents by applying emerging digital technologies where applicable.

 

 

3. Selection and Prioritization of Content for Digitisation

a. Selection Criteria

Not all content of the library collection can / should be digitisedWhere applicable, the Library’s collections that meet the following principles should be prioritized for digitisation [1] :

  1. Current and potential research value – Consideration will be given to whether the collection has active research being carried out or has potentials to support new research projects, and whether the collection has intrinsic value that attracts interests of the academic community.
  2. Relevance to the research, teaching and learning programs of the University – Consideration will be given to how far the collection will meet the needs of students, faculty and researchers or support the research and curriculum of the University.
  3. Access needs – Consideration will be given to whether the collection is in great demand or anticipated to have high demand or whether digitisation will significantly enhance its access and use.
  4. Rarity of the collection – Consideration will be given to whether the collection is unique.
  5. Fragility of the collection – Consideration will be given to whether the physical condition of the collection is fit for digitisation or it is deteriorating at a speed that digitisation at a later stage is not possible or more expensive.
  6. Donor’s wish – Consideration will be given to whether donors have requested digitisation of their collections donated to the Library or whether donors will give consent to the Library to digitize their collections.
  7. Copyright clearance or out-of-copyright – Consideration will be given to whether the materials are out-of-copyright so that it is easier and cheaper for digitisation to be carried out or whether the rights and permissions for digitisation and electronic access securable or easy to be secured.
  8. Availability of technology – Consideration will be given to whether the collection requires specific digitisation technology that is not yet available to the Library or whether the current digitisation technology is able to yield image quality adequate enough to meet the requirements of the project such as Optical Character Recognition or how easy it will be to digitize the collection.
  9. Cost of digitisation – Consideration will be given to whether the cost of digitisation and its post-processing work supported by the Library’s budget or whether resources are available elsewhere to keep digitisation work sustainable.

It should be noted that the importance of the above selection criteria can be different for different library materials. To streamline the process of selection, the Library will take the scorecard approach adopted by National Library of New Zealand to help prioritize the digitsation projects by assigning weights and fits to each project according to the above criteria. Please refer to Appendix 1 for details.

The scoring is performed by Digital Initiatives Group (DIG) in consultation with the University Librarian or Faculty members for collaborative digitisation projects.

In view of the limited resources available to the Library, digitisation activity will be carried out in the priority of the scores given to each project.

 

b. Sources of Materials

Content selected for digitisation will mainly come from internal special collections, external donation, and collaboration / partnership with CUHK community.

 

c. Format of Materials

All formats of materials will be covered including but not limited to books, manuscripts, photos, maps, artworks, audio recordings, and video recordings.

 

 

4. Digitisation Strategies

The Library strives to implement its digitisation programs in a long-term sustainable manner by developing effective service model, establishing partnership with different internal units and external organizations of the University, adhering to technical standards of digitisation in the industry and proven best practice, and developing an effective infrastructure and platform.

a. Sustainability of digitisation initiatives [2]

  1. To keep the digitisation projects sustainable so that they can be carried out in on-going manner, a viable service model composite of diverse sources of financial support should be derived for existing and new projects submitted for consideration of digitisation:
    • Internal funding from the Library
    • Collaborate with other University departments with potential for funding support
    • External funding sources through donations or securing government grants from University Grants Committee (UGC)
    • Levying charges for digitisation such as large-scale digitisation projects, online hosting of the digital collections of partnering units and data conversion services.
    • Collaborate with commercial publishers for funding support if appropriate
    • Collaborate with other local and overseas libraries such as Joint University Librarians Advisory Committee (JULAC)
  2. Ongoing commitment from the Library’s internal funding for the development of its digital repository including hardware and software, and the support of its technical staff to keep the digitized materials accessible.
  3. Derive measures to keep the maintenance cost as low as possible so that it can be absorbed into the operating cost of the Library.
  4. Ongoing review of the digital collections to ensure they meet the mission of the University, remain relevant to the needs of the intended audience and remain valuable to the community.

 

b. Digitisation Process and Standards

  1. Materials selected for digitisation will be processed using the most effective method. Rare and fragile materials will be scanned within the University campus while other materials will be out-sourced using methods as agreed by the Library.
  2. The Library has established technical standards for file formats of the master image file and the derivative image file for different types of materials. These standards will be reviewed regularly in order to keep up with the latest industry standards. Where appropriate, higher resolution and special formats will be adopted depending on the requirements of individual projects.
  3. Each digital object would be described with appropriate descriptive and structural metadata that conform to international standards.
  4. The Library protects copyright of the content selected for digitisation. They would be cleared of copyright before digitisation. Where appropriate, Creative Common License would be created to protect the copyright of the original creator while allowing others to make some uses of their work in the digital age. The Library also reserves the rights to take-down digital images that are suspected of infringing the Copyright Ordinance of Hong Kong or any other third party.
  5. There is no one single workflow that meets the needs of all digitisation projects; the process may vary slightly according to the specific requirements of each project. In general, the following processes are required:
    1. Physical handling of the material such as accessioning, cleaning, checking its physical condition, basic conservation measures such as freezing to treat infested materials.
    2. Assess whether the materials should be prioritized for digitisation.
    3. Where appropriate, the materials will be sent to Cataloguing / Special Collections for metadata creation depending on the nature of the materials.
    4. The materials will then be sent to Research Support & Digital Initiatives to map out the most appropriate method of digitisation and the requirements of deliverables.
    5. The actual process of scanning will take place either in house or out-sourced.
    6. Images will be further processed after the image-capturing process to ensure the images are in the correct size and color.
    7. Images will be checked for its image quality and accuracy. Those that do not meet the standard will be captured again.
    8. Those images meeting all the requirements will be ingested into the CUHK Digital Repository for users’ access and the servers for archiving.

 

 

5. Access and Discovery

  • The Library supports open access. The digital collections would be made openly accessible online whenever the rights permit.
  • The CUHK Digital Repository is established as the institutional repository for all digital content. This repository is OAI-PMH compliant that is able to integrate with the discovery service of the Library to make the digital content more discoverable, accessible and seamless to users.
  • The digital collections that are open access will be registered in different OA repositories and directories.
  • Those legacy collections without digital objects will be removed from the CUHK Digital Repository and will be described in appropriate library web sites.
  • To facilitate access via the discovery platform of the Library, the digitized materials should be catalogued either as a collection or individually in the Library catalogue and with links to the digital objects in the CUHK Digital Repository.
  • Archival materials will be catalogued and made searchable in the Archive finding aid of the Library. If they are selected for digitisation, the digital objects will be stored and accessible on the CUHK Digital Repository and bi-directional links to the Archive finding aid of the Library. If only part of the collection is selected for digitisation, it should be stated clearly in both the CUHK Digital Repository and the Archive finding aids of the Library.
  • Each digital collection should be accompanied with a clear statement of ownership and copyright to make clear its terms of use. Creative Commons License will be created wherever it is deemed necessary.

 

 

6. Digital Curation

At present, all digital collections of the Library are created through digitisation. In future, the Library will proactively curate digital-born content according to the selection principles stated in Section 3 in this policy. We will make use of appropriate open source web harvesting tools and technologies and will develop our own wherever it is needed. The curated content will be made accessible in the CUHK Digital Repository and be applied with all the access principles stated in this policy.

 

 

7. Digital Archiving & Preservation

As part of the life-cycle management of digital content, the Library is committed to archive and preserve its digital content to ensure its accessibility and authenticity in the long run.

   1. Scope – Since only content of enduring value is identified for digitisation, all digital collections created will be archived and preserved rigorously to ensure its accessibility in the long term.

   2. Principles -

    1. Each digital collection regardless whether they are created or born-digital should incorporate elements of digital archival and preservation planning to ensure the digital content will be properly archived and preserved in the long run.
    2. While the Library is committed to archive and preserve its digital content in the long run and according to the respective archival and preservation plan, it is impossible for the Library to guarantee its accessibility forever. All digital collections will be reviewed and the Library will withdraw those that are no longer meeting the needs of users at a particular time.

   3. Strategies -

    1. Technology infrastructure – The Library will develop appropriate technology infrastructure according to international standard and framework to manage its digital archives.
    2. Persistent identifiers – Each digital object will be associated with an unique persistent link to ensure its continued access.
    3. Keeping multiple copies – The master image files for all digital objects are stored separately from the production images. One backup copy is placed in the Data Centre of Information Technology Service Centre at Wu Ho Man Yuen (WMY) Building for disaster recovery. Other means of archiving the digitized copy will be adopted as appropriate.
    4. Keeping up with technological change [3] – The Library will adopt the following strategies to deal with technological obsolescence:
      1. The Library will maintain obsolete hardware and software as far as possible as a means of access in the short to medium term.
      2. Refreshing  The digital objects will be copied from one storage medium to another to keep them accessible.
      3. Migration – The digital objects will be migrated to new hardware / software system and media to keep them viable. It is noted there is potential for loss of some functionality and data in each migration.
    5. Intellectual Property Rights - The Library will ensure that the archived and preserved digital content is complied with the prevailing intellectual property laws and ordinance of Hong Kong.
    6. Continuous staff training - The Library will also allocate appropriate resources to provide continuous education and training to IT professionals and technical staff members to ensure they have the required skills and knowledge to manage the digital collections.

 

 

8. Promotion and marketing of digital collections

It is crucial for the success of the Library’s digitisation program to make all digital collections more visible and accessible to library users. A mixture of following strategies will be adopted:

  1. Include links to the CUHK Digital Repository in the home page of the Library
  2. Outreach to academics and researchers of the University
  3. Publicity through exhibitions, campus events, posters, Library newsletter and social networking tools.
  4. Arrange seminars and talks on the digital collections

 

 

9. Governance and Implementation

The Library is responsible for ensuring that this digitisation policy is implemented effectively under a robust governance structure. To achieve this, the following departments of the Library are charged with specific roles and responsibilities:

  1. Collecting – Special Collections, Collection Management & Preservation (CMP)
  2. Selection of materials for digitisation – Digital Initiatives Group (DIG) in consultation with University Librarian
  3. Funding – The CUHK Library and other partners
  4. Digitisation of materials – Research Support & Digital Initiatives
  5. Metadata creation and support – Cataloging, Special Collections
  6. Access via the CUHK Digital Repository – Research Support & Digital Initiatives in collaboration with Special Collections
  7. Access via Library Catalogue - Cataloging
  8. Access via Archive Management Software – Special Collections
  9. Access via Discovery Tool – Library IT & Systems
  10. Digital preservation – Research Support & Digital Initiatives
  11. Promotion – Special Collections, Learning Support, Research Support & Digital Initiatives
  12. Evaluation of success – Digital Initiatives Group (DIG)

 

 

10. Measurement of Success

The Library will measure the success of its digitisation activities with a mixture of quantitative and qualitative criteria:

  1. Production –number of items digitized annually
  2. Level of Use
    1. number of unique users visiting the collections in the CUHK Digital Repository
    2. number of times a digital object is viewed
    3. number of research projects making use of the collections
    4. number of digital objects used in curriculum of the University
  3. Citation counts of the digitised materials – number of times the collection is cited or linked
  4. Level of funding support – annual budget spent on or external sources of funding secured for digitisation
  5. Implementation – number of digitised collections launched on schedule and within budget
  6. User’s feedback in the form of surveys such as LibQual

The above statistics and comments should be incorporated into regular statistical reports of the Library and make available to the Library Management Group on a regular basis.

 

 

11. Review of the Policy

This policy will be reviewed every three years by the Digital Initiatives Group (DIG) in consultation with the University Librarian to assess its success and to ensure it continues to reflect and meet the changes in the University and the Library’s policy and the rapid development of digitisation standards and technologies.

 

Drafted by: Louisa Lam, Head of Research Support and Digital Initiatives
Endorsed by: Digital Initiatives Group
Approved by: Library Management Group
Current Version: Version 1 dated 29.04.2015
Date of Next Review: 29.04.2017

 


 

Appendix 1 – Scorecard Method for the Selection of Materials for Digitisation

All the selection criteria are listed as scorecard criteria in Table 1. Each criterion needs to be given a score in the “Fit” column according to the following simple scale:

0

1

2

Does not meet

Partially meets

Meets

 

Then a score in the “Weight” column should also be given to each criterion for importance according to the following simple scale:

 

0

1

2

Not important

May be important

Important

 

Scoring is calculated by multiplying the Fit by the Weight e.g.

A Fit of ‘1’ times a Weight of ‘2’ creates a score of ‘2’

A Fit of ‘2’ times a Weight of ‘0’ creates a score of ‘0’

A score of ‘2’ or ‘4 - the material meets or exceeds the criteria that are important to the digitisation project.

A score of ‘0’ or ‘1’ - the material fails to meet the criteria that are important to the digitisation project.

Table 1: Scoring Selection Criteria for Identifying Materials for Digitisation

 

Selection Criteria

Fit

Weight

Score

Meets or exceeds
(✔)

Fails
(✔)

1. Current and potential value of the digitized copy

         

a. The materials have active research being carried out

         

b. The materials will have value as a resource, able to be utilized to create new research projects or open up other research opportunities

         

c. The materials are relevant to the research, teaching and learning programs of the University

         

d. The materials can be further developed by applying new technologies and new research methods such as digital humanities

         

2. Access to the original

         

a. The original is rare, unique or has few viewable or usable copies (regardless of form) that limits access

         

b. There is a significant existing demand to access the original

         

c. The original is fragile or being put at unacceptable risk of damage or loss due to the current level of access

         

d. The original is difficult or costly to access due to factors such as its location, conditions placed on access, or preparation required for access

         

3. Donor’s wish and clearance of copyright

         

a. The materials are requested by donors for digitisation

         

b. Donors have given consent to the Library for digitisation

         

c. The materials have been cleared of copyright or it is anticipated that the appropriate rights and permissions can be sought with ease

         

4. Digitisation technique

         

a. The material can be readily prepared for digitisation such as its repairs, conditioning and organizing

         

b. The digitisation technology being proposed is readily available

         

c. The digitisation technology is not costly

         

d. The digital format and carrier proposed can be managed over time

         
           

Overall tally

         

 


 

[1] Hazen, D., Horrell, J. & Merrill-Oldham, J. (1998). Selecting research collections for digitisation. Available at http://www.clir.org/pubs/reports/hazen/pub74.html

[2] Maron, N.L., & Pickle, S. (2013). Searching for sustainability: Strategies from eight digitized special collections. Available at: http://www.arl.org/storage/documents/publications/searching-for-sustainability-report-nov2013.pdf

[3] Loptain, L. (2006). Library digitisation projects, issues and guidelines: A survey of the literature. Library Hi Tech, 24(2): 273-289.

 
 

Take-down Policy

Disclaimer & Take-Down Policy

This policy applies to information resources digitized and made available open access on the CUHK Digital Repository.

 

Disclaimer

We have sought to ensure that the content in these materials complies with Hong Kong SAR Legislation. Please note however, that we have been unable to ascertain the rights holders of some items. Where rights holders have been located and permission granted this is clearly indicated.  Please ensure any re-use of these materials is in accordance with the specified license, and that the appropriate acknowledgements are included. If you feel that your copyright has been infringed in any way, please notify the Library’s Digital Initiatives Team immediately, preferably by email to digitization@lib.cuhk.edu.hk.

 

Take-down Policy

All complaints made under this policy must contain the following information: (i) the complainant's full name, address, telephone number and email address; (ii) a full description of the material about which the complaint is made, including the full URL of the location of the material; (iii) the justification of complaint such as the law that is said to be infringed; (iv) any other relevant information in support of the complaint. The Library will endeavor to resolve the issue swiftly,  if found justified, we shall cease the open access to the work in question.

Open Access

Open Access Policy

CUHK Library supports an open access policy. We also respect the intellectual property rights of a third party. Some collections are applied with access restrictions according to the request of the copyright holders and the provisions in the Copyright Ordinance (Cap. 528) of Hong Kong. But unless otherwise stated, the digital content in the Repository is open access. The use of the materials is licensed under a Creative Commons Attribution-NonCommercial-NoDerivaties 4.0 International License with the following terms of use:

 

  • You must give appropriate credit to the author or provide a link to the license; and
  • You may not use the material for commercial purposes; and
  • If you remix, transform, or build upon the material, you are not authorized to distribute the modified material.

 

The Digital Repository has been harvested into and accessible in the following Open Access Repositories:

 

BASE

BASE

CORE

CORE

Directory of Open Access Repositories (OpenDOAR)

Directory of Open Access Repositories (OpenDOAR)

Hong Kong Institutional Repositories (HKIR)

Hong Kong Institutional Repositories (HKIR)
For CUHK Electronic Theses & Dissertations Collection

Networked Digital Library of Theses and Dissertations (NDLTD)

Networked Digital Library of Theses and Dissertations (NDLTD)
For CUHK Electronic Theses & Dissertations Collection

OCLC WorldCat OAIster

OCLC WorldCat OAIster

Open Archives Initiative

Open Archives Initiative

Registry of Open Access Repositories

Registry of Open Access Repositories

 

Please contact by the webform or digitization@lib.cuhk.edu.hk for any enquiries relating to the above.