Question to art people .?

Question:What it the artistic technique called when many images are put together make one?
Where the shades and colours of the images when correctly arranged form one image like a face or something.

Best Answer - Chosen by Asker: What it the artistic technique called when many images are put together make one?
Where the shades and colours of the images when correctly arranged form one image like a face or something.

also possible mosaic/ collage/ montage ~ish,
Mosaic Maker
http://bighugelabs.com/flickr/mosaic.php
Andrea Mosaic
http://www.andreaplanet.com/andreamosaic...
image mosaic generator online
http://imagemosaicgenerator.click42.com/
Mosaic Creator
http://www.aolej.com/
Collagr.com - Create your own collage
http://www.collagr.com/
fd's Flickr Toys
http://www.bighugelabs.com/flickr/
Montage-a-google
http://grant.robinson.name/projects/mont...
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Photoscape : Photo Manipulating Suite,
http://www.photoscape.org/ps/main/index....
Picasa
http://picasa.google.com/

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Is it a tessellation, or collage? I'm a little confused. I think you mean tessellation.