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Note |
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To successfully create derivative data streams datastreams, ImageMagick (TN & JPG) and Kakadu (JP2) need needs to be installed on the server. To create JP2 datastreams, Kakadu is the preferred solution, but ImageMagick can be used if it has been built with JPEG2000 support. |
Downloads
Release Notes and Downloads
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- Lossless Derivative Creation?: Enabling this will force the Large Image Solution Pack to use no reversible lossless compression when creating JP2 derivatives. When a JP2 original is uploaded, a second "use" copy is created for the JP2 datastream.
- Use Kakadu for Image Compression?: The Kakadu software suite can be installed on your server to take advantage of its much faster kdu_compress program. Check Users often use the copy of kdu_compress that comes bundled with Djatoka (see below), but you can also check out the official website at http://www.kakadusoftware.com/ for download and installation instructions.
Configure the image-tool kit to use ImageMagick rather than GD in Administration > Configuration > Media > Image Toolkit (admin/config/media/image-toolkit). If GD is selected, TN and JPG datastreams will not be generated.
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Select configuration options and viewer in Administration > Islandora > Solution pack configuration > Large Image Collection (admin/islandora/solution_pack_config/large_image).
To use Kakadu, make sure that kdu_compress
and kdu_expand
are avaliable to the Apache user. Often users will create symbolic links from /usr/local/bin/kdu_compress
to their installation of Kakadu that comes bundled with Adore-Djatoka. Make sure that the required dynamic libriraries that come with Kakadu are excessible accessible to kdu_compress
and kdu_expand
. If they are not present, attempting to run either command from the terminal will inform you it's libraries are missing. You can also use a symbolic link from /usr/local/lib
to include these libraries, remember to restart the terminal so your changes take affect. Also, make sure the php settings allow for enough memory and upload size: upload_max_filesize, post_max_size and memory_limit.
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RELS-EXT | Default Fedora relationship metadata |
MODS | MODS record filled out during ingest |
DC | Dublin Core record |
OBJ | Original TIFF or JP2 file uploaded |
JP2 | JPEG 2000 derivative created by ImageMagick or Kakadu |
JPG | Medium-sized JPEG created by ImageMagick and used in the standard image viewer |
TN | Thumbnail icon created from the image during the ingest process |
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