A presentation given at the International Image Interoperability Framework event held at Ghent University, Belgium on December 8, 2015. Simeon Warner Cornell University

1. IIIF: Access to the World's Images – Ghent, Belgium, 2015-12-08
The IIIF Image API
http://iiif.io/api/image/2.0/
Simeon Warner (Cornell University)
With lots of help (& slides) from Jon Stroop, Rob
Sanderson, Michael Appleby, Tom Crane,...

2. IIIF: Access to the World's Images – Ghent, Belgium, 2015-12-08
The Problem

3. IIIF: Access to the World's Images – Ghent, Belgium, 2015-12-08
Without Standards We Have Silos
Application A
Server A
Application B
Server B
Application C
Server C
Application D
Server D

4. IIIF: Access to the World's Images – Ghent, Belgium, 2015-12-08
Technology Becomes Interchangeable
Application A
Server D
Application B
Server C Server B
Application C
Server A
Application D

5. IIIF: Access to the World's Images – Ghent, Belgium, 2015-12-08
Resources Become Shareable
Application A
Server D
Application B
Server C Server B
Application C
Server A
Application D

6. IIIF: Access to the World's Images – Ghent, Belgium, 2015-12-08
The Solution... IIIF Image API
Image API v2.0
Draft 2014-06
Community review
Released 2014-08

7. IIIF: Access to the World's Images – Ghent, Belgium, 2015-12-08
Syntax
 (Just Enough) Technical Metadata
 The Image
 Server Capabilities
http(s)://{server}{/prefix}/{id}/info.json
http(s)://{server}{/prefix}/{id}/{region}/{size}/{rotation}/{quality}.{fmt}
http://iiif.io/api/image/2/level2.json

8. IIIF: Access to the World's Images – Ghent, Belgium, 2015-12-08
{id}/full/full/0/default.jpg
5204 x 7200
pixels
/full/full/ not
practical for
all images!

9. IIIF: Access to the World's Images – Ghent, Belgium, 2015-12-08
{id}/full/400,/0/default.jpg

10. IIIF: Access to the World's Images – Ghent, Belgium, 2015-12-08
{id}/3930,60,1230,3600/400,/0/default.jpg

11. IIIF: Access to the World's Images – Ghent, Belgium, 2015-12-08
{id}/3930,60,1230,3600/400,/90/default.jpg

12. IIIF: Access to the World's Images – Ghent, Belgium, 2015-12-08
{id}/3930,60,1230,3600/400,/90/gray.jpg

13. IIIF: Access to the World's Images – Ghent, Belgium, 2015-12-08
{id}/full/150,/0/default.png
• png supports transparency
• used for thumbnails etc.

14. IIIF: Access to the World's Images – Ghent, Belgium, 2015-12-08
info.json
{
"@context" : "http://iiif.io/api/image/2/context.json",
"@id" : "http://libimages.princeton.edu/loris2/pudl0130%2F8555444%2F02%2F00000007.jp2",
"height" : 7200,
"width" : 5204,
"profile":[
"http://iiif.io/api/image/2/level2.json",
{
"supports" : [ "canonicalLinkHeader", "profileLinkHeader", "mirroring" ],
"qualities" : [ "default", "bitonal", "gray", "color" ],
"formats" : [ "jpg", "png", "gif", "webp" ]
}
],
"protocol" : "http://iiif.io/api/image",
"tiles" : [{
"width" : 1024,
"scaleFactors" : [ 1, 2, 4, 8, 16, 32, 64, 128 ]
}],
"sizes":[
{ "width" : 41, "height" : 57 },
{ "width" : 82, "height" : 113 },
{ "width" : 163, "height" : 225 },
{ "width" : 326, "height" : 450 },
{ "width" : 651, "height" : 900 },
{ "width" : 1301, "height" : 1800 },
{ "width" : 2602, "height" : 3600 },
{ "width" : 5204, "height" : 7200 }
]
}

15. IIIF: Access to the World's Images – Ghent, Belgium, 2015-12-08
leveln.json
{
"@context" : "http://iiif.io/api/image/2/context.json",
"@id" : "http://iiif.io/api/image/2/level2.json",
"@type" : "iiif:ImageProfile",
"formats" : [ "jpg", "png" ],
"qualities" : [ "default", "bitonal" ],
"supports" : [
"baseUriRedirect",
"cors",
"jsonldMediaType",
"profileLinkHeader",
"regionByPx",
"sizeByH",
"sizeByPct",
"sizeByW",
"regionByPct",
"rotationBy90s",
"sizeByForcedWh",
"sizeByWh"
]
}

16. IIIF: Access to the World's Images – Ghent, Belgium, 2015-12-08
level0 – static files
•IIIF supports static files, pre-generated tiles
•Can still do pan & zoom
•Can still have a set of thumnail sizes
•Image Information (info.json) lets client know
what is available
Demo:
http://zimeon.github.io/iiif-static-mandlebrot/

17. IIIF: Access to the World's Images – Ghent, Belgium, 2015-12-08
Implementations
Servers Clients
digilibCONTENTdm
OpenSeadragon
IIPMooViewer
OpenLayers
Leaflet-IIIF
+Applicationsbasedonthese
RAIS Image Server

18. IIIF: Access to the World's Images – Ghent, Belgium, 2015-12-08
v2.1 nearing final draft
No breaking changes
Clarity++
Adds attribution,
license and logo
Adds square region
Tie to authentication

19. IIIF: Access to the World's Images – Ghent, Belgium, 2015-12-08
Thank you!
http://iiif.io/api/image/2.0/