====== Islandora Large_Image ======

  * **Islandora_OpenSeadragon**
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<code>
cd /var/www/asaisla.to.cnr.it/sites/all/modules/
git clone git://github.com/Islandora/islandora_openseadragon.git
cd /var/www/asaisla.to.cnr.it/
drush -u 1 en islandora_openseadragon
</code>
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  * Redirect Openseadragon tile source to fedora

By default tile source point to front-end server to download JP2. In some case pointing directly to fedora may result in better performance.
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To modify how this works you can add to your theme template.php this functions to override tile source URL for islandora openseadragon (Many thanks Nigel!!):
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<code php>
function beginning_preprocess_islandora_openseadragon_viewer(array &$variables) {
  module_load_include('inc', 'islandora_openseadragon', 'includes/utilities');
  $pid =  $variables['settings']['pid'];
  $matches = array();
  preg_match('/datastream%2[fF](.*)%2[fF]view/', $variables['settings']['options']['tileSources'][0], $matches);
  $dsid = isset($matches[1]) ? $matches[1] : NULL;
  $identifier = "http://FEDORA_IP_or_FQDN:8080/fedora/objects/".$pid."/datastreams/".$dsid."/content";
  $variables['settings']['options']['tileSources'] = islandora_openseadragon_identifier_tile_source($identifier);
}
</code>
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This function replaces tile source URL and remove token, so IIIF server download directly from fedora avoiding network loop with front-end.
  * **Islandora large image**
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<code>
cd /var/www/asaisla.to.cnr.it/sites/all/modules/
git clone git://github.com/Islandora/islandora_solution_pack_large_image
cd /var/www/asaisla.to.cnr.it/
drush -u 1 en islandora_large_image
</code>
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Browse to admin/islandora/solution_pack_config/large_image:
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<code>
 Create Lossless Derivatives = YES
 Use Kakadu for image compression = YES
 Uncompress TIFF files prior to creating JP2 datastreams =YES
 Path to Kakadu: /usr/local/bin/kdu_compress
 Viewers: OpenSeadragon
</code>
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Browse to admin/islandora/solution_pack_config/solution_packs and verify required objects:
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<code>
  Islandora Large Image Content Model	islandora:sp_large_image_cmodel	 	Up-to-date
  Large Image Collection		islandora:sp_large_image_collection	Up-to-date
</code>
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  * **Test SP Large Image**
Browse to Large Image Collection: islandora/object/islandora:sp_large_image_collection.
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Manage -> Add an object to this Collection: islandora/object/islandora:sp_large_image_collection/manage/overview/ingest
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Datastreams:
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{{:isla2:largeimageds.png?direct&200|}}