Creating a picture as a collage

[MassiveJim]

Is there an easy way to recreate this photo collage effect with your own picture ?

http://www.ebay.com/itm/Star-Wars-D...ge-Poster-25x36-Collectors-Rare-/121526773970

an online tool perhaps where I could feed it the picture I wanted to recreate, then feed it a 1000 photos or is this far to complex to be automated ?

 

[Pho]

Looks a bit like http://mosaically.com/ / http://www.easymoza.com/

edit: Check out AndreaMosaid which apparently does it.