Blank canvas reveals its art when you snap a picture of it
Imagine a gallery full of blank canvasses, that instantly turn
into art when you take a picture of them. That's the idea behind
this art project called Take A Picture,  The turns out that the
art is actually under the canvas, where an array of infrared
LEDs are arranged to form the picture which could be anything
from a winking smiley face to abstract geometric patterns. The
trick is that infrared light is invisible to the human eye, but
a digital camera's image sensor picks it up and records it as
something you can see.  There are no current plans for a gallery
show of Take A Picture art, but it would be interesting to see
people's reactions when then enter a show full of seemingly
blank canvasses.  Take A Picture, via Make