What Is This Montage Software Called?

[Peter Blake]

….where hundreds or thousands of images make up a larger shot, each individual image being of a particular overall tone or shade, thus contributing effectively an information point to the bigger picture.

I have a sudden idea and want to do it as soon as possible!

 

[Pete Askew]

Photographic mosaics or photomosaics.

http://www.andreaplanet.com/andreamosaic/download/
http://www.mazaika.com

http://www.photomosaic.com