The latest works 41

since September 5, 2009



"Cat's-eyes"

Pupils of cat's eyes are drawn vertically but appear to tilt clockwise or counterclockwise.

Copyright Akiyoshi Kitaoka 2009 (December 26)



"Unstable hexagons"

Rows appear to swing laterally.

Copyright Akiyoshi Kitaoka 2009 (December 22)



"Rain and hail"

When observers move their glasses up and down, the inset appears to move laterally.

Copyright Akiyoshi Kitaoka 2009 (December 21)



"Pseudo Fraser spirals"

Concentric rings appear to be spirals.

Copyright Akiyoshi Kitaoka 2009 (December 17)



"Fudomyuo with gastritis"

Fudomyuo = kind of god

The face appears to move.

Copyright Akiyoshi .Kitaoka 2009 (November 20)



"Helicobacter pylori extinction illusion"

In free viewing, illusory light-blue concentric rings are observed. On the other hand, they disappear when observers fix their eyes on the red cross at the center. In addition, if those who wear glasses move them up and down, 'stomachs' appear to move.

Copyright Akiyoshi .Kitaoka 2009 (November 18)



"Black swallowtails"

The four light-blue (cyan) dots placed near the corner are difficult for observers to perceive simultaneously.

Copyright Akiyoshi .Kitaoka 2009 (November 7)



"Peripheral shimmering illusion"

Plaid patterns in each circle appear to shimmer, but those which are observed in the central vision do not.

Copyright Akiyoshi .Kitaoka 2009 (October 15)



"Australia seen from space and dust storm over Australia"

The two Australia shapes are physically the same color and texture, but the left Australia appears to be reddish while the right one appears to be bluish with red dust storm blanketing it. This effect depends on the chromatic version of Anderson's illusion.

Copyright Akiyoshi .Kitaoka 2009 (September 25)

Anderson, B. L. and Winawer, J. (2005) Image segmentation and lightness perception. Nature, 434, 79-83.

Wollschläger, D. and Anderson, B.L. (2009) The role of layered scene representations in color appearance. Current Biology, 19, 430-435.


I am going to Sydney on Sunday (27th September, 2009) to attend AIC2009 and give a talk about color illusions. News said that a few days ago huge dust storm attacked Sydney. <September 25, 2009>



"Ben diagram"

Each yellow shape appears to be smaller when seen in the peripheral vision.

Copyright Akiyoshi Kitaoka 2009 (September 16)

This effect was pointed out by Ben.



"The Very Angry Caterpillar"

Each disk appears to rotate clockwise.

Copyright Akiyoshi Kitaoka 2009 (September 6)

The Very Hungry Caterpillar (Wikipedia)



"Morays"

The uppermost and lowermost morays appear to move rightward, while the rest do leftward.

Copyright Akiyoshi Kitaoka 2009 (September 5)


40 The latest works (August 2009 - August 2009)
39 The latest works (May 2009 - July 2009)
38 The latest works (January 2009 - April 2009)
36 The latest works (October 2008 - December 2008)

37 The latest works (December 2008 - February 2009)
36 The latest works (October 2008 - December 2008)

35 The latest works (August 2008 - October 2008)
34 The latest works (July 2008 - August 2008)
33 The latest works (June 2008 - July 2008)
32 The latest works (April 2008 - June 2008)
31 The latest works (March 2008 - March 2008)
30 The latest works (January 2008 - March 2008)
29 The latest works (December 2007 - January 2008)
28 The latest works (October 2007 - December 2007)
27 The latest works (August 2007 - September 2007)
26 The latest works (June 2007 - August 2007)
25 The latest works (March 2007 - June 2007)
24 The latest works (March 2007 - March 2007)
23 The latest works (February 2007 - March 2007)
22 The latest works (December 2006 - January 2007
21 The latest works (October 2006 - November 2006)
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