Amazing Optical Illusions by Professor Akiyoshi Kitaoka

Akiyoshi Kitaoka, a psychology professor who received Gold Prize of the 9th L'ORÉAL Art and Science of Color Prize in 2006 extensively studies visual illusions including geometrical (shape) illusions, lightness illusions, color illusions, motion illusions and other visual phenomena including visual completion or perceptual transparency.

The reason for describing him before going into the topic is because of his awesome illustrations. He wrote more than ten books of visual illusions or illusion designs.

Below are some of the illustration works of Professor Akiyoshi Kitaoka which we have taken from his website.

Note: Having trouble after seeing these images for some time? If yes, close one eye when you are seeing these illustrations and then leave this site or his site.

Outer ring appears to rotate clockwise and inner ring in anti-clockwise direction.

 By Professor, they are named as snakes and these appears to rotate. (Works with big picture. Open the image in a new tab and zoom)

Follow the steps. You go down, but when did you came up?

They are expanding (Works with big picture. Open the image in a new tab and zoom)

This appears to rotate in clockwise direction. For this effect, slowly scroll up or scroll down. (Works with big picture. Open the image in a new tab and zoom)

Awesome expanding flowers (Works with big picture. Open the image in a new tab and zoom)

Bulging illusion

I can't figure it out whether they are white spots or dark brown spots!

Rolling ball. For this illusion, slowly scroll up or down (Works with big picture. Open the image in a new tab and zoom)

 Beating heart or moving heart

Rolling watermelon

Inner block appears to move right-upward

Hearts are moving