[eluser]InsiteFX[/eluser]
Pagination can be used for anything it has no code for database it just takes the offset etc.
You would need to create your own method like a the one passed in for the database offset etc but for your images. The offset would be like the offset in to an array of images and the limit how many you want displayed.
./system/libraries/Pagination.php
You will see their is no database code in it.