I've seen this before but I forgot what's its called. Does anyone know of software that takes a picture and spits out an image of the number pi, ie. 3.14... not the symbol? It basically kinda looks like ascii art but the numbers are different shades of gray so it is like a black and white photo.
closed as off topic by KronoS, Journeyman Geek, Nifle, Canadian Luke, Mokubai Jul 11 '12 at 17:49
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I am not aware of an all in one solution, but you can take a look at Andrea Mosaic.
You can input a large plain picture of the Pi symbol, point it to your folder of Black and White (or normal) pictures, and it should automatically generate a mosaic for you.
Engadget have a good guide that will tell you how to use the software.