Search Engine Optimization = SEO. Like how to score high in Google and Google images (this also applies to other search engines like Yahoo, Bing...).
As the robots (bots) that crawl the web regularly can only see text and not see images, you'll have to help them by surrounding your image(s) with text.
The bots try to make up what the image is about by looking at
1. the page title (the <title> tag,
2. the META description in the <head> section,
3. the META keywords in the <head> section,
4. text surrounding the image, preferably in the same <DIV>,
5. ALT and TITLE tags,
6. the file name of the image.
Currently, the bots don't read the IPTC metadata.
The current Arles addresses 1,4 and 5 (if you use the titles cleverly), but not 2,3 and 6.
Read here for instance:
http://www.theseoworld.com/blog/google-images-search-optimization/
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Edit: adding an
xml sitemap focused on images would also be very useful for SEO. Without a proper sitemap, your images will not rank high in Google Images, as the automatic robots will address the design elements (like buttons) and thumbs too and assume from the
many repeats that the site isn't an image site. The image robots are not that clever, and they can't "see" images. Amongst the many images referenced on a single image page (if you add navigation), there will only be
one relevant image reference near the end of the page, but the bots will have giving up crawling your site already then. Moreover, they will get confused since the image is on another page than the HTML of it
For each image page in /imagepages, an entry should be added to the sitemap.xml file like this:
Code:
<loc>http://www.mysite.com/galleries/imagepages/paris-image1.html</loc>
<image:image>
<image:loc>http://www.mysite.com/galleries/images/paris-by-night-eiffeltower-DCS001.jpg</image:loc>
<image:title>Paris by night with the Eiffel Tower silhouette.</image:title>
</image:image>
<lastmod>2010-08-20T11:18:13+00:00</lastmod>
<priority>1.00</priority>
</url>
As I see it, it can easily be handled in the Titles>advanced, adding a log file and tokens for (absolute URL of page) and (absolute URL of image). The image title can be taken from the IPTC or whatever with the already existing tokens.
I can assure you that this will open a large market for Arles with (semi-) pro stock photographers (hundreds of thousands on
Shutterstock alone) that want to push themselves in Google Images.