Over the past several years, photographer Flo Razowsky of Nogales, Arizona, has been photographing the ultra-long walls that divide international borders around the world. Her project is titled "Up Against the Wall."
LZRTAG is a free Android app that lets you generate QR codes associated with uploaded images -- mostly animated .gif images. The codes can be printed out and placed on walls and other surfaces. When scanned with the Android app, the codes call up the associated image and display it in an augmented reality on your phone.
Artist Alexandre Farto has an interesting method of 'printing' large scale portrait photographs onto walls. Instead of using paint, he scratches paint away. Starting with a guide painted onto the wall using a stencil, Farto carefully scratches and chips paint and plaster away from walls using a jackhammer, pick, hammer, and his hands. His giant photos can be seen on abandoned buildings in cities around the world, including Moscow, London, and NYC.
Street artists Jana & JS visit cities across Europe and paint portraits of themselves (and sometimes others) shooting with various film cameras. Each piece first starts out as a photograph, which is then turned into a stencil that's used to put up the painting.
What does it look like when every inch of a room's walls and ceiling are covered with photographs? German art students Joern Roeder and Jonathan Pirnay decided to find out through their project titled "fbFaces". Using a crawler that traverses the Facebook social graph, they harvested 100,000 profile pictures and used them to print out an intense wallpaper for the entire room.