IIIF Overview for Linked Data Exhibitions

IIIF For Museums American Art Collaborative, 13th of November 2014 1

Rob Sanderson Technology Standards Advocate

Stanford University Libraries

#iiif @azaroth42


Images are fundamental information carriers for

cultural heritage



Yet we find digital image delivery:

Too Ugly Too Slow

Too Complex Too Expensive

Too Disjoint from other Content

And everyone suffers because of it


A World of Duplication

•  Every site is a silo •  Every app is a one-off •  Every user is forced to relearn


There is a better way...

http://lod-cloud.net/ Aug 2014


Linked Data and APIs enable reuse


Linked Data and APIs enable reuse


IIIF Vision A Global Framework of interoperable servers,

serving hundreds of millions of images, from leading cultural heritage institutions, to best of breed clients, for viewing, and manipulation, and annotation, to any user on the Web.


What is IIIF?


Pixel content via a simple REST web service

Plus technical info in Linked Data

Just enough description to drive a remote viewing experience of a Cultural Heritage object, using Linked Data

Image API Presentation API

(1) Two Linked Data based APIs


(1a) Image API

Region Size Mirror Rotation Quality


Image API: Pixels

Image API URL Template: {base}/{region}/{size}/{rotation}/{quality}.{format}!!•  {base}/full/full/0/default.jpg!

•  {base}/100,100,640,480/full/0/default.jpg!•  {base}/full/640,/0/default.jpg!•  {base}/full/pct:50/0/default.jpg!•  {base}/full/full/!0/default.jpg!•  {base}/full/full/180/default.jpg!•  {base}/full/full/0/gray.jpg!•  {base}/full/full/0/default.png!!


Image API: Linked Data

{! "@context": "http://iiif.io/api/image/2/context.json",! "@id": "http://www.example.org/iiif/book1-p1",! "height": 6000,! "width": 4000,! "tiles": [{"scale_factors": [ 1, 2, 4, 8 ], "width": 512}],! "sizes": [{"width": 400, "height": 600},! {"width": 2000, "height": 3000}! ],! "profile": ["http://iiif.io/api/image/2/level2.json",! {"formats": ["pdf", "gif"],! "qualities": ["color", "gray"]}! ]!}! !

!!

{base}/info.json!!!!!!


(1b) Presentation API

Features •  Descriptive Information •  Object Structure •  Content Layout

•  Links to Image API •  Attribution and Licensing •  Links

We'll come back to this...


(2) Community

National Libraries •  British Library •  France •  Denmark •  Israel •  New Zealand •  Norway •  Poland •  Serbia •  Wales

Research Institutions •  C2RMF (France) •  Cornell University •  Johns Hopkins Univ. •  Harvard University •  Oxford University •  Princeton University •  Stanford University •  Wellcome Library •  Yale University

Projects •  Biblissima •  e-codices •  TPEN •  TextGrid

Aggregators •  Artstor •  DPLA •  Europeana

Current Participants


IIIF-Discuss Members

h"p://groups.google.com/forum/#!forum/iiif-‐discuss


(3) Compatible Software

h"p://groups.google.com/forum/#!forum/iiif-‐discuss IIP Image

IIP Moo Viewer

digilib

FSI Viewer

FSI Server

Wellcome Player Mirador Internet Archive Book Reader

Image Servers

Image Clients

Image Apps


Why use IIIF?


1)  Rich Image Delivery 2)  Plug and Play Software 3)  Publish Once, Reuse Often 4)  Remix Content 5)  Cite & Share 6)  Annotation-friendly 7)  Attribution & Access Control 8)  Join a Global Network

Benefits of IIIF


IIIF Presentation API

Rewarding User Experience Domain Independence

Ease & Reusability of Applications Distributed on the Web Plays Nice with Others

Goals


IIIF Presentation API

Cultural Context Object's Structure

Layout of Individual Views Reuse Rights and Requirements

Links to Other Resources

By Describing


http://www.dlib.indiana.edu/~jenlrile/metadatamap/


Solution: Focus on the User

Only the information necessary for an application to present the object to the user

http://iiif.io/api/presentation/2.0/


Shared Canvas

Abstract space used for building a view of the object


Shared Canvas

Abstract space used for building a view of the object

Think: Powerpoint Slide


Shared Canvas


Shared Canvas


Shared Canvas


Shared Canvas


Why?


One Canvas, Multiple Images

Archimedes Palimpsest Multi-Spectral Images http://www.archimedespalimpsest.org/








One Image, Multiple Canvases

http://www.e-codices.unifr.ch/en/csg/1394/140a http://www.e-codices.unifr.ch/en/csg/1394/063abcder


Not Just Images

http://purl.stanford.edu/cv176gb0028#image/545/thumb/


Structure


Structure


Structure


Structure


Structure


Structure


Properties Descriptive

label

Name of the resource description

Textual summary thumbnail

Image summary metadata

Pairs of Label and Value Metadata Example: label:"Created", value:"1300"!


Properties Rights

license Link to license description

attribution Text required to be displayed

logo Image required to be displayed

Linking

service Additional service endpoint

seeAlso Semantic metadata resource

related Resource to display to the user


How?


JSON: Ease of Development

Linked Data: Plays Nice with Others


{! "@context":"http://iiif.io/api/presentation/2/context.json",! "@id":"http://www.example.org/iiif/book1/canvas/p1.json",! "@type":"sc:Canvas”,! "label":"p. 1”,! "height":1000,! "width":750,! "images": [! {"@type":"oa:Annotation”,! // annotation linking image to canvas …! }],! "otherContent": [! {"@type":"sc:AnnotationList",! // reference to list of non-image annotations …! }]!} !

{}s are the new <>s


Summary IIIF is:

•  Technology: APIs, Images and Linked Data •  Software that implements the Technology •  Community that adopts and develops the Software

Linked Data is used:

•  To describe technical metadata about images •  To describe the digitized cultural heritage

•  context •  structure •  layout •  rights •  relationships


Thank You :) Links:

•  http://iiif.io/

•  http://iiif.io/api/presentation/2.0/ •  http://iiif.io/api/image/2.0/

•  http://sul-reader-test.stanford.edu/m2/