Autostereograms
1994
  1. Look at the two white squares below.
  2. Look "through the screen" such that the two white squares become four white squares. This is similar to the effect of double vision when looking cross-eyed, except that you need to look "too far" instead of "too close".
  3. While looking through the screen and seeing four squares, try to match up two of the squares such that you see three squares. In particular, focus on the combined square in the middle. This requires some practice.
  4. Focus on this center square until you can comfortably reproduce the focus at will.
  5. When having the center square in focus, slowly glance down into the image below. You will see an image appear, a 3D image!












Unfinished work:




Generated with Turbo Pascal 7.0
Original image format: PCX


Tim Samshuijzen
1994