Commit 5a9a2ac0 authored by Georg Petz's avatar Georg Petz
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IIIF slides

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3 - Images and Text.ipynb

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# 3 - Images and Text



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In this block:



* Overview IIIF

* Overview OCR formats



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* What is IIIF?

    * International Image Interoperability Framework ([http://iiif.io/](http://iiif.io/))

    *  standardised method of describing and delivering images over the web

    * community that develops APIs and implements them in Software



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![iiif apis](./media/api_puzzle_pieces.png)



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* IIIF Image API

    * requesting and delivering images on the Web

    * [https://iiif.io/api/image/2.1/](https://iiif.io/api/image/2.1/)

    * Image Request URI Syntax

        * {scheme}://{server}{/prefix}/{identifier}/{region}/{size}/{rotation}/{quality}.{format}

        * [http://iiif.onb.ac.at/images/ABO/Z196807705/00000009/full/full/0/native.jpg](http://iiif.onb.ac.at/images/ABO/Z196807705/00000009/full/full/0/native.jpg)

        * 90 degree rotation: [http://iiif.onb.ac.at/images/ABO/Z196807705/00000009/full/full/90/native.jpg](http://iiif.onb.ac.at/images/ABO/Z196807705/00000009/full/full/90/native.jpg)

        * "Articulus Quartus": [https://iiif.onb.ac.at/images/ABO/Z196807705/00000009/pct:0,0,100,33/full/0/native.jpg](https://iiif.onb.ac.at/images/ABO/Z196807705/00000009/pct:0,0,100,33/full/0/native.jpg)





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* IIIF Presentation API

    * returns JSON-LD structured documents that together describe the structure and layout of a digitized object or other collection of images and related content

    * [https://iiif.io/api/presentation/2.1/](https://iiif.io/api/presentation/2.1/)

    * [https://iiif.onb.ac.at/presentation/ABO/+Z196807705/manifest/](https://iiif.onb.ac.at/presentation/ABO/+Z196807705/manifest/)





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* Example download OCR text

* Example download pre-resized images for machine learning

* Example create IIIF collection from SPARQL query result



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``` python

```

media/api_puzzle_pieces.png

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