What is an autostereogram? An autostereogram is a single-image stereogram (SIS), designed to trick the human brain into perceiving a three-dimensional (3D) scene in a two-dimensional image. In order to perceive 3D shapes in these autostereograms, the brain must overcome the normally automatic coordination between focusing and convergence. You have to focus on the picture...People who haven't done this before, have patience! Example:
Do you see the shark? I'll post a stereogram, tell me what you see... I'll tell you if you're right or wrong. Good luck people! Number one: 
© N.E. Thing Enterprises
