1. Digital Library Development
Kyle Rimkus and Bill Ingram
February 10, 2016

2. The challenge of managing digital production, preservation, and access at UIUC.

3. Image Management Evaluation Team
members: Sarah Christensen, Tim Cole, Alex Dolski, MJ Han, Tom Habing (ex-officio), Bill Ingram (ex-officio), Patricia Lampron, Kyle Rimkus (chair)
This group was charged with evaluating and issuing a recommendation for a digital content management and access system that would be a suitable replacement for or extension of the Library’s current CONTENTdm instance and which could support the same types of content and also collections significantly larger than 50,000 items.

4. Recommendation
Migrate collections from CONTENTdm over the course of two years, and decommission CONTENTdm by August 2017.
As a first collection, migrate the Sanborn Maps collection from CONTENTdm. This collection of over 10,000 items will free up space below the 50,000 item limit in CONTENTdm, thus allowing for significant freedom to use both systems during the transition year.

5. Beta Site: https://digital.library.illinois.edu/

6. Image Viewer “beta” disclaimer and feedback form search image metadata
download high-resolution master or derivatives
“IIIF” image viewer with pan and zoom
Descriptive metadata
Image Viewer

7. Medusa Digital Preservation Service

8. The Medusa Dashboard

9. A Collection in Medusa Access restricted to collection managers
Search across folders, files, and metadata
Edit preservation metadata
Conduct preservation actions
Track provenance
View files

10. Folder and File View in Medusa (for library staff)

11. Published item view in front end (for public)

12. Illinois Data Bank (under development)

13. Deposit Data – Accept Deposit Agreement

14. Deposit Data – Enter Metadata

15. Deposit Data – Upload Files

16. Deposit Data - Review

17. Deposit Data - Confirm

18. Deposit Data – Published

19. Main Functions for Users
1. Deposit Data
2. Access Data
Look for data
Review record
Download files

20. Access Data – Look for data

21. Access Data – Review/Download

23. Repository Architecture
Access services built on top of shared preservation system
Repository service as broker between applications and storage
Micro-services instead of single, monolithic repository application
Off-site storage and backup
Durable Data; Lightweight Interfaces

24. International Image Interoperability Framework
The IIIF standard defines a set of APIs to support uniform and rich access to image-based resources
Supports interoperability
Derivatives are generated “on the fly”
Eliminates the need to make and store additional access copies
Image Request URL Syntax
{scheme}://{server}{/prefix}/{identifier}/{region}/{size}/{rotation}/{quality}.{format}
e.g.,

25. IIIF URL Syntax: Region

26. IIIF URL Syntax: Size

27. IIIF URL Syntax: Quality & Format

28. IIIF URL Syntax: Putting it all together

29. IIIF Viewer in the Digital Library Service
OpenSeadragon
An open-source, web-based viewer for high-resolution zoomable images, implemented in pure JavaScript, for desktop and mobile.