What was the technique used for the Truman Show movie poster called?

Published March 21, 2012 | By Bman

Question by CC: What was the technique used for the Truman Show movie poster called?
Here is the link. http://www.impawards.com/1998/posters/truman_show_ver1.jpg

Is it hard to do? is there a software that makes it automatic?

Best answer:

Answer by sheffieldcrew4life
Photomosaic.

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Posted in Making Movies | Tagged called, Movie, Poster, show, Technique, Truman, Used