Color illusion 10

Since September 3, 2008



"Eye color constancy 4"

The eyes in the left image appears to be red while those in the right one appears to be gray, though they are the same color.

Copyright Akiyoshi Kitaoka 2009 (April 24)


The eye color is R=87, G=97, B=98.



"Eye color constancy 5"

The eyes in the left image appears to be green while those in the right one appears to be gray, though they are the same color.

Copyright Akiyoshi Kitaoka 2009 (April 24)


The eye color is R=98, G=89, B=98.



"Eye color constancy 6"
(Tinkerbell-like color)

The eyes in the left image appears to be blue while those in the right one appears to be gray, though they are the same color.

Copyright Akiyoshi Kitaoka 2009 (April 24)



"Eye color constancy 7"

The eyes in the left image appears to be purple while those in the right one appears to be nearly gray, though they are the same color.

Copyright Akiyoshi Kitaoka 2009 (April 24)



"Eye-light induced deterioration of skin color"

If eyes shed light, skin color appears to deteriorate.

Copyright Akiyoshi Kitaoka 2009 (April 21)



"Eye color illusion"

The eyes in the left image appears to be light blue while those in the right one appears to be bluish green, though they are the same color.

Copyright Akiyoshi Kitaoka 2009 (April 21)



"Improvement of face color by color assimilation"
(with the Droste effect)

The left poor face color can be improved as that in the right image.

Copyright Akiyoshi Kitaoka 2009 (March 24)



"Kajita's chromatic scintillating grid illusion"

The upper-left image consists of red parts, but the light-red dots appear to be tinted bluish or to scintillate so. The real color of them is shown at the right side. The lower-right image consists of magenta (red-purple) parts, but the light-magenta dots appear to be tinted bluish or to scintillate so. The real color of them is shown at the left side.

Copyright Akiyoshi Kitaoka 2009 (February 23)

Kajita sensei's page
(in Japanese)





"Kajita's chromatic scintillating grid illusion 2"

All white dots appear to be tinted reddish or to scintillate so.

Copyright Akiyoshi Kitaoka 2009 (February 23)


"Gray rings"

The left gray ring appears to be bluish while the right one greenish, though they are identical in luminance or color.

Copyright Akiyoshi Kitaoka 2008 (November 1)

cf. Monnier, P. and Shevell, S. K. (2003) Large shifts in color appearance from patterned chromatic backgrounds. Nature Neuroscience, 6, 801-802.


"Skin color illusion"

The left girl appears to be reddish while the right one yellowish, though they are identical in color. This illusion is the "dotted color" illusion.

Copyright Akiyoshi Kitaoka 2008 (September 3)

Dotted color illusion: The left red square appears to be orange while the right red one appears to be magenta.

The dotted color illusion is the chromatic version of White's dotted lightness illusion.

White's dotted lightness illusion: The left gray square appears to be lighter than the right one, though they are identical in lightness.

White, M. (1982) The assimilation-enhancing effect of a dotted surround upon a dotted test region. Perception, 11, 103-106.





Random dots also work.

Randomly dotted color illusion: The left red square appears to be orange while the right red one appears to be magenta.


Color illusion 9

Color illusion 8

Color illusion 7

Color illusion 6

Color illusion 5

Color illusion 4

Color illusion 3

Color illusion 2

Color illusion


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