This has been implemented in the jAlbum PhotoSwipe skin, see http://jalbum.net/nl/skins/skin/PhotoSwipe To see it, open the sample album: http://andrewolff.jalbum.net/Reestdal_PS/ and click the button "Album with folders"

Hello,
I think you can make your idea in PHP
For exemple with:

<div>
<?php
$folder = 'PATH_FOLDER';
$d = dir($folder);
while ($entry = $d->read()) {
if($entry != "." && $entry != ".." && $entry != "index.php"){
$lien = str_replace('Object ', 'fichiers/', $entry);
echo '<a href="./'.$lien.'">'.$entry.'</a><br>';
}
}
$d->close();
?>
</div>

Of course, this code must be adapted to add the figures tag on your page...
Maybe you can match the key [path_folder-filename] with data base informations to match specifics title and description ^^