The latest works 51

since April 15, 2013

Warning: This page includes real animations. Please do not keep watching them for a long time. Although this page has carefully avoided the known harmful stimuli, unknown ones might happen to be included. Never copy them.


"Rotating Okazaemon"

The right ring appears to rotate clockwise while the left one counterclockwise.

produced by Akiyoshi Kitaoka 2013 (September 15, 9, 10)
Okazaemon included with permission

Okazaemon (the PR character of Okazaki City, Aichi Prefecture, Japan)

Okazakiina-chan (a derivative of Okazaemon)

Copyright Akiyoshi Kitaoka 2013 (September 15)



"Arc tilt illusion"

Arcs have the same center but appear to be distorted.

Copyright Akiyoshi Kitaoka 2013 (August 8)


"Close look-dependent motion illusion observed in the central vision"

When viewed at a distance of around 30 cm, the disk which observers gaze at in the central vision appears to rotate counterclockwise, while disks in the peripheral vision appear to rotate clockwise.

Copyright Akiyoshi Kitaoka 2013 (August 3)


(Apparent blue spokes are actually gray)





A similar effect is obtained with a gray-scale optimized Fraser-Wilcox illusion image (the disk which observers gaze at in the central vision appears to rotate counterclockwise, while disks in the peripheral vision appear to rotate clockwise).

Copyright Akiyoshi Kitaoka 2013 (August 6)



A similar effect is obtained with a colored optimized Fraser-Wilcox illusion image (the disk which observers gaze at in the central vision appears to rotate counterclockwise, while disks in the peripheral vision appear to rotate clockwise).

Copyright Akiyoshi Kitaoka 2013 (August 6)



"Close look-dependent motion illusion observed in the central vision"

When viewed at a distance of around 30 cm, the disk which observers gaze at in the central vision appears to rotate counterclockwise, while disks in the peripheral vision appear to rotate clockwise.

"Rotating red-and-cyan disks"

Each disk appears to rotate clockwise on a bright display, while it appears to rotate counterclockwise with a printed image under dark illumination.

Copyright Akiyoshi Kitaoka 2013 (February 1)



"Gingham illusion is closely related to the scintillating grid illusion"

The Gingham illusion (Tyler, 2000) refers to a phenomenon that corners of squares of a Gingham pattern appear to scintillate.

Copyright Akiyoshi Kitaoka 2013 (July 16)




"Gingham illusion is closely related to the Bergen grid illusion"

Copyright Akiyoshi Kitaoka 2013 (July 16)



Tyler C. W. (2000). The Gingham illusion: Scintillations and the depth representation of second-order signals. Investigative Ophthalmology & Visual Science 41: 4, S228.



"Owl clocks"

Each disk appears to rotate clockwise in a bright condition, while it appears to rotate counterclockwise in a dark condition.

Copyright Akiyoshi Kitaoka 2013 (June 22)


"Contracting blue flowers"

"Contracting blue maple leaves" (changed June 11, 2013)

Each leaf appears to contract.

Copyright Akiyoshi Kitaoka 2013 (June 4)


"Moving schools of fish"

The uppermost and third images appear to move rightward while the rest appear to move leftward.

Copyright Akiyoshi Kitaoka 2013 (June 2)


"Moving fences"

The uppermost and third images appear to move rightward while the rest appear to move leftward.

Copyright Akiyoshi Kitaoka 2013 (May 27)

This illusion was found when I saw a fence of the Japan Railway Enmachi station in Kyoto.




"On-off rotating snakes: red and sky blue #1"

When fading in, each disk appears to rotate in the direction: black, red, white, sky blue, black. The direction is reversed when fading out.

Copyright Akiyoshi Kitaoka 2013 (April 30)



"On-off rotating snakes: red and sky blue #2"

When fading in, each disk appears to rotate in the direction: black, sky blue, white, red, black. The direction is reversed when fading out.

Copyright Akiyoshi Kitaoka 2013 (April 30)



"On-off rotating snakes: red and sky blue #3"

Each disk appears to rotate continually in the direction: black, red, white, sky blue, black.

Copyright Akiyoshi Kitaoka 2013 (April 30)



"On-off rotating snakes: red and sky blue #4"

Each disk appears to rotate continually in the direction: black, sky blue, white, red, black.

Copyright Akiyoshi Kitaoka 2013 (April 30)



"Rotating Jasmina's cake"

Each cake appears to rotate clockwise on a PC display, while it appears to rotate counterclockwise in a print under dark illumination.

Copyright Akiyoshi Kitaoka 2013 (April 15)


Jasmina's cake

Her mother and sister made this special cake for her PhD celebration party in Serbia.


50 The latest works (December 2012 - April 2013)
49 The latest works (August 2012 - December 2012)
48 The latest works (February 2012 - August 2012)
47 The latest works (August 2011 - December 2011)

46 The latest works (May 2011 - August 2011)
45 The latest works (December 2010 - April 2011)
44 The latest works (October 2010 - December 2010)
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41 The latest works (September 2009 - December 2009)
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30 The latest works (January 2008 - March 2008)
29 The latest works (December 2007 - January 2008)
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27 The latest works (August 2007 - September 2007)
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