Hi Shane,
> Have there been any projects investigating the potential for
> watermarking images stored in the repository as they are accessed by
> the user?
>
> Here is a quick guide to using PHP and the GD Graphics Library to
> accomplish this, but not within the DSpace environment:
>
> http://www.sitepoint.com/article/watermark-images-php
>
> I'm not sure if something like this could be done within DSpace, but
> it would certainly be helpful for my institution in some cases.
Does the branded image item facility do what you want?
In [dspace-src]/docs/configure.html, look for:
===
Displaying Image Item Preview
For particular types of objects (currently various image formats), a preview
feature can be activated. This provides a branded version of the DSpace
bitstream for display on the Item Display page.
To activate this feature and display a preview image on the item page (all
properties mentioned below are found in dspace.cfg):
- Uncomment the lines defining the list of configured mediafilters at
plugin.sequence.org.dspace.app.mediafilter.MediaFilter to include
org.dspace.app.mediafilter.BrandedPreviewJPEGFilter.
- Set the maximum pixel dimensions for the preview image by altering the
webui.preview.maxwidth and webui.preview.maxheight (default is 600) config
items.
- Set the webui.preview.brand to the text you want to brand the image with.
The brand will appear as white text on a black background strip across the
base of the image. For example you might set the text to the owning
organisation. The handle is also displayed as part of the branding.
- Set the webui.preview.brand.abbrev. This is an abbreviated form of the
webui.preview.brand text and will be shown where the brand text is longer
than the image width (e.g. for narrow images).
- Set the webui.preview.brand.height to the height in pixels of the
appended branding (default 20).
- Set the webui.preview.brand.font to the font for the brand text (default
is SansSerif).
- Set the webui.preview.brand.fontpoint to the font size for the brand text
(default is 12).
- Run [dspace]/bin/filter-media to generate the preview images. These will
be stored in a BRANDED_PREVIEW bundle so won't interfere with existing
bundles.
- Set webui.preview.enabled = true.
- Set webui.preview.dc if a metadata value is to appear just below the
preview. For example, to highlight item rights you might set
webui.preview.dc = rights or to show the description as part of the preview
set webui.preview.dc = description.abstract. This is disabled by default.
- Restart Tomcat.
===
Thanks,
Stuart
_________________________________________________________________
Gwasanaethau Gwybodaeth Information Services
Prifysgol Aberystwyth Aberystwyth University
E-bost / E-mail: [EMAIL PROTECTED]
Ffon / Tel: (01970) 622860
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