Mounting an Image Class Collection
From DLXS Documentation
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| + | [[DLXS Wiki|Main Page]] > [[Mounting Collections: Class-specific Steps]] > Mounting an Image Class Collection | ||
| + | [http://images.umdl.umich.edu/cgi/i/image/image-idx See Image Class in Action] | ||
| + | See [[Getting Started with DLXS]] and [[Installing DLXS]] for information on Image Class and installing a sample image class collection. | ||
| - | + | Read the Image Class [http://www.dlxs.org/training/workshop200607/ workshop tutorial] for a useful introduction to working with Image Class. | |
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| - | <table border="2" cellpadding="10" cellspacing="0" | + | |
<tr> | <tr> | ||
<td><strong>Migration</strong></td> | <td><strong>Migration</strong></td> | ||
| - | <td align="MIDDLE"> | + | <td align="MIDDLE">[[Migration to DLXS13]]</td> |
</tr> | </tr> | ||
| - | <tr><td><strong>Media</strong></td><td align="MIDDLE"> | + | <tr><td><strong>Media</strong></td><td align="MIDDLE">[[Loading Image Files]]<br />[[Image Class and JPEG2000]]</td></tr> |
<tr><td><p><strong>Metadata</strong></p> | <tr><td><p><strong>Metadata</strong></p> | ||
| - | </td><td width="275" align="MIDDLE"><p> | + | </td><td width="275" align="MIDDLE"><p>[[Image Class Data Loading: MySQL]]<br>[[Media Table]]<br> |
| - | + | </p> | |
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</td> | </td> | ||
</tr> | </tr> | ||
| - | <tr><td><strong>Advanced</strong></td><td align="MIDDLE"> | + | <tr><td><strong>Advanced</strong></td><td align="MIDDLE">[[Mapping Image Structures]]</td> |
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</tr> | </tr> | ||
<tr><td><strong>General</strong></td> | <tr><td><strong>General</strong></td> | ||
| - | + | <td align="MIDDLE" ><p>[[#Not To Be Missed|Not To Be Missed]] <br> | |
| - | + | [[Image File Naming]]<br /> | |
| - | + | [[Data Requirements]]<br /> | |
| - | + | [[Access Control]]</p> | |
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</td></tr> | </td></tr> | ||
<tr><td><strong>Interface</strong></td> | <tr><td><strong>Interface</strong></td> | ||
| - | + | <td align="MIDDLE"><p>[[Dynamic Browse]]<br> | |
| - | + | [[User Interface]]<br /> | |
| - | + | [[Collmgr/Collection Database]]<br /> | |
</p> | </p> | ||
</td></tr> | </td></tr> | ||
Revision as of 14:55, 14 August 2007
Main Page > Mounting Collections: Class-specific Steps > Mounting an Image Class Collection
See Getting Started with DLXS and Installing DLXS for information on Image Class and installing a sample image class collection.
Read the Image Class workshop tutorial for a useful introduction to working with Image Class.
| Migration | Migration to DLXS13 |
| Media | Loading Image Files Image Class and JPEG2000 |
Metadata | |
| Advanced | Mapping Image Structures |
| General | Image File Naming |
| Interface |
Not To Be Missed
Worth Noting
- MySQL, by default, indexes words 4 characters or longer. Shorter
words are therefore not searchable. This can be changed if desired. It
requires having the following configuration directive in the [mysqld] section of the MySQL configuration file (usually /etc/my.cnf):
ft_min_word_len=2
Once this is done, existing fulltext indexes will need to be rebuilt. The following command does the job nicely in MySQL.
REPAIR TABLE tbl_name QUICK - There are other situations where you might need to repair tables or
rebuild indexes. Migration of tables from one version of MySQL to
another can be such a case. Signs of trouble may be subtle. Boolean
searching has been known to fail quietly. In addition to the REPAIR
command above, you can try...
REPAIR TABLE tbl_name USE_FRM
Thanks to Aaron Brenner for the tip and this link <a href="http://dev.mysql.com/doc/mysql/en/Fulltext_Fine-tuning.html">http://dev.mysql.com/doc/mysql/en/Fulltext_Fine-tuning.html</a>.
Easily Overlooked
- The amount of time it takes for thumbnail images to display in the browser can be reduced dramatically by creating a symlink for each collection like this....
cd $DLXSROOT/web/c/coll
ln -s $DLXSROOT/img/c/coll/index thumb
The only drawback to this approach is that it bypasses the cgi and authentication for thumbnails by essentially putting them under the web document root. If thumbnail security is important, don't create the symlink.
A Common Problem
- If you get a division by zero error from the Image Class CGI when trying to view a full size image, double check the installation of mrsid_retrieve. Most likeley, it is not installed properly.
