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• Lossless Derivative Creation?: Enabling this will force the Large Image Solution Pack to use no compression when creating derivatives.
• 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 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 > Large Image Collection (admin/islandora/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 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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Viewers

If no viewers are installed, the Large Image Solution Pack module will use its standard viewer to display images. For better results, the OpenSeadragon library can be installed; check that page for further instructions. If it is installed, it can be selected here.

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