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 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:

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

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 Conduct preservation actions Track provenance Edit preservation metadata 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)

Deposit Data – Accept Deposit Agreement

Deposit Data – Enter Metadata

Deposit Data – Upload Files

Deposit Data - Review

Deposit Data - Confirm

Deposit Data – Published

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

Access Data – Look for data

Access Data – Review/Download

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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 Image Request URL Syntax {scheme}://{server}{/prefix}/{identifier}/{region}/{size}/{rotation}/{quality}.{format} e.g., 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

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.