iiif overview for linked data exhibitions
DESCRIPTION
Presentation given to the American Art Collaborative on November 13, 2014. Introduction to IIIF, with a focus on linked data and the Presentation API. Particularly targeted at Museums, but also other Cultural Heritage institutions.TRANSCRIPT
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IIIF For Museums American Art Collaborative, 13th of November 2014 1
Rob Sanderson Technology Standards Advocate
Stanford University Libraries
#iiif @azaroth42
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Images are fundamental information carriers for
cultural heritage
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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
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A World of Duplication
• Every site is a silo • Every app is a one-off • Every user is forced to relearn
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There is a better way...
http://lod-cloud.net/ Aug 2014
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Linked Data and APIs enable reuse
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Linked Data and APIs enable reuse
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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.
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What is IIIF?
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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
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(1a) Image API
Region Size Mirror Rotation Quality
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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!!
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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!!!!!!
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(1b) Presentation API
Features • Descriptive Information • Object Structure • Content Layout
• Links to Image API • Attribution and Licensing • Links
We'll come back to this...
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(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
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IIIF-Discuss Members
h"p://groups.google.com/forum/#!forum/iiif-‐discuss
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(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
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Why use IIIF?
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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
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IIIF Presentation API
Rewarding User Experience Domain Independence
Ease & Reusability of Applications Distributed on the Web Plays Nice with Others
Goals
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IIIF Presentation API
Cultural Context Object's Structure
Layout of Individual Views Reuse Rights and Requirements
Links to Other Resources
By Describing
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http://www.dlib.indiana.edu/~jenlrile/metadatamap/
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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/
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Shared Canvas
Abstract space used for building a view of the object
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Shared Canvas
Abstract space used for building a view of the object
Think: Powerpoint Slide
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Shared Canvas
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Shared Canvas
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Shared Canvas
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Shared Canvas
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Why?
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One Canvas, Multiple Images
Archimedes Palimpsest Multi-Spectral Images http://www.archimedespalimpsest.org/
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One Canvas, Multiple Images
Archimedes Palimpsest Multi-Spectral Images http://www.archimedespalimpsest.org/
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One Canvas, Multiple Images
Archimedes Palimpsest Multi-Spectral Images http://www.archimedespalimpsest.org/
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One Image, Multiple Canvases
http://www.e-codices.unifr.ch/en/csg/1394/140a http://www.e-codices.unifr.ch/en/csg/1394/063abcder
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Not Just Images
http://purl.stanford.edu/cv176gb0028#image/545/thumb/
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Structure
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Structure
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Structure
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Structure
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Structure
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Structure
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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"!
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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
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How?
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JSON: Ease of Development
Linked Data: Plays Nice with Others
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{! "@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
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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
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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/