1. Integrating Koha and IIIF to manage a digital library
Stefano Bargioni ORCID Pontificia Università della Santa Croce 37th ADLUG Meeting - Venice, September 12, 2018

2. Agenda 0. What is Koha (in less than 3 seconds)
1. What is IIIF (in less than 3… hours)
2. Digilib at PUSC
3. The architecture of Digilib 2.0

3. Koha The best free ILS 20 years of open source software
Only open standards
Impressive distribution all over the world
A strong community of librarians, companies and developers
- KohaCon18 in Portland, Oregon, in these same days
- KohaCon19 in Stockholm, Sweden, or Dublin, Ireland

4. IIIF - International Image Interoperability Framework

5. IIIF - What is it
IIIF is used by libraries and museums interested in publishing their image repositories and making them interoperable.
Based on open source software and open standards:
image server
viewer
JSON-LD for both the Image API Image Information Request and the Presentation API
JPEG, JPEG2000, PNG and TIFF source images

6. An IIIF Repository - Basic Component parts
image server
metadata
(manifest) server
viewer server
CPU intensive taks

7. An IIIF Repository - The dialog
image server
viewer server
metadata
(manifest) server
A IIIF manifest URL is published (in Koha)
The browser requests the viewer
The viewer requests the manifest to the metadata server
Metadata are interpreted by the viewer, image(s) are sent to the browser
Moving, zooming… interactions with the document are managed by the image server

8. IIIF - Viewers http://showcase.iiif.io Javascript applications
Open source
Powerful research tools for digital humanities
OpenSeaDragon
Project Mirador
Universal Viewer
Leaflet-IIIF
Klokan Tech IIIF Viewer

9. IIIF - Image servers Open source or commercial Loris IIIF Image Server
IIPImage
IIIFServer
Cantaloupe (our choice)
Cantaloupe is an open-source dynamic image server for on-demand generation of derivatives of high-resolution source images. With available operations including cropping, scaling, and rotation, it can support deep-zooming image viewers, as well as on-the-fly thumbnail generation. Compliance with the IIIF Image API enables it to work with a growing number of IIIF viewers.

10. IIIF - Viewer and Image server cooperation
The viewer downloads
The image server sends
only the images, or even the portion of the image, that is visible to the user. This minimizes bandwidth consumption while providing a very fast viewing experience.

11. IIIF - Companies Create a repository Customize viewers Hosting
Customize services
...

12. IIIF - Services
Documents can be associated with services, described in the same JSON-LD manifest that describes the document.
Authentication
Annotation
Search
Geolocalization
Download as...
and more

13. Digilib at PUSC - A book

14. Digilib at PUSC - A book (2)
Metadata include a link to the Koha bibliographic record
metadata

15. Digilib at PUSC - Plain text
Pressing a button, the full text (plain text) is shown, for copy and paste functionality.
The text comes from the OCR process.

16. Digilib at PUSC - OCR Products of the OCR process are: Tiff images
Plain text
Stored in a sqlite database, one for each book
Each word is indexed along side with its:
Page number
Line number
Relative position in the line
Services based on plain text:
Display
Search
inside the book
collection of books

17. Digilib at PUSC - The architecture
A semi-professional planetary scanner and an office double-face scanner produce tiff images or pdf files
OCR process produces plain texts, from modern books
Tiff images and text enter the repository (terabytes)
A link in the bibliographic record launches the viewer and open the book (RDA, 856, 776)
A SQL table links the bibliographic record to administrative data:
Dates
Creator
Embargo
Cover
Rights
Usage counter
Access control

18. Digilib at PUSC - Bibliographic description in Koha
A modern or ancient book is described in Koha, using RDA and MARC21:
a standard book-material bibliographic record
a bibliographic electronic-resource record for the digital version
both records are linked each other using tag 776, e.g.
in record 66888: $i Risorsa digitale: $t L'ecclesialità del processo contenzioso-ordinario e del contenzioso-amministrativo $w
in record : $i Testo a stampa: $t L'ecclesialità del processo contenzioso-ordinario e del contenzioso-amministrativo $w 66888
the record of the digital resource has a 856 tag for the manifest URL:
$3 Risorsa digitale $u
the manifest is generated on the fly, taking info from the Koha record of the digital resource and from the images stored in the repository

19. Digilib at PUSC - Manifest generation
The IIIF manifest file in JOSN-LD format is generated on the fly, based on
the bibliographic record of the digital resource
the images stored in the repository
Image credits:

20. Digilib at PUSC - access control
IP address of the user
User authentication
User role
Copyright statement contained in the metadata
For a general discussion, see
Copyright and access restrictions – providing access to the digital collections of Leiden University Libraries with conditional access rights by Saskia van Bergen and Lucas van Schaik

21. IIIF - Interoperability

22. IIIF users and demos Stanford University Libraries
Princeton University Libraries
The British Library
Biblissima
Europeana
The Vatican Library
...

23. The end :-)