Ouchi Ilusion

photo courtesy of www.illusionworks.com

 

As funny as it sounds, the ouchi illusion is quite amazing. As our vision is, we can only see movement through 3-D images, not 2-D. The trick is is to see the circle pop out or cave in. Either way, if you can see this, then you might be able to see the ball move. Move your head side to side and there may appear to be some movement. The motion should occur at the edges of the circular shape.