Color constancy6

since February 13, 2015


"Red strawberry illusion"

Strawberries appear to be reddish, though the pixels are not.

Copyright Akiyoshi Kitaoka 2017 (March 7)

(transformed with the additive color change or alpha blending)


"Yellow strawberry illusion"

Strawberries appear to be yellowish, though the pixels are not.

Copyright Akiyoshi Kitaoka 2017 (March 7)

(transformed with the additive color change or alpha blending)


"Green strawberry illusion"

Strawberries appear to be greenish, though the pixels are not.

Copyright Akiyoshi Kitaoka 2017 (March 7)

(transformed with the additive color change or alpha blending)


"Cyan strawberry illusion"

Strawberries appear to be cyan, though the pixels are not.

Copyright Akiyoshi Kitaoka 2017 (March 7)

(transformed with the additive color change or alpha blending)


"Blue strawberry illusion"

Strawberries appear to be bluish, though the pixels are not.

Copyright Akiyoshi Kitaoka 2017 (March 7)

(transformed with the additive color change or alpha blending)


"Magenta strawberry illusion"

Strawberries appear to be red-purple, though the pixels are not.

Copyright Akiyoshi Kitaoka 2017 (March 7)

(transformed with the additive color change or alpha blending)


"Color strawberry illusion"

Strawberries appear to be colored, though the pixels are the opposed color.

Copyright Akiyoshi Kitaoka 2017 (March 7)

(transformed with the additive color change or alpha blending)



strawberries-color-constancy2017e.pdf


cf. the original image

Copyright Akiyoshi Kitaoka 2017 (March 7)


cf. the blue-transformed image

Copyright Akiyoshi Kitaoka 2017 (March 7)


cf. the yellow-transformed image

Copyright Akiyoshi Kitaoka 2017 (March 7)


cf. a gray-scale image

Copyright Akiyoshi Kitaoka 2017 (March 7)


Copyright Akiyoshi Kitaoka 2017 (March 11)


"Red strawberry illusion"

Strawberries appear to be reddish, though the pixels are cyan or gray.

Copyright Akiyoshi Kitaoka 2017 (March 9)

(transformed with the two-color method)


"Yellow strawberry illusion"

Strawberries appear to be yellowish, though the pixels are blue or cyan.

Copyright Akiyoshi Kitaoka 2017 (March 9)

(transformed with the two-color method)


"Green strawberry illusion"

Strawberries appear to be greenish, though the pixels are green or magenta.

Copyright Akiyoshi Kitaoka 2017 (March 9)

(transformed with the two-color method)


"Cyan strawberry illusion"

Strawberries appear to be cyan, though the pixels are red or gray.

Copyright Akiyoshi Kitaoka 2017 (March 9)

(transformed with the two-color method)


"Blue strawberry illusion"

Strawberries appear to be bluish, though the pixels are yellow or gray.

Copyright Akiyoshi Kitaoka 2017 (March 9)

(transformed with the two-color method)


"Magenta strawberry illusion"

Strawberries appear to be red-purple, though the pixels are green or gray.

Copyright Akiyoshi Kitaoka 2017 (March 9)

(transformed with the two-color method)


Copyright Akiyoshi Kitaoka 2017 (March 11)


"Three types of color changes to show color constancy"

From the top, multiplicative color change (usual colored filtering or colored illuminantion), additive color change, and the two-color method.

Copyright Akiyoshi Kitaoka 2017 (March 15)


"Red strawberry illusion"
(non-linear model)

Strawberries appear to be reddish, though the pixels are not.

Copyright Akiyoshi Kitaoka 2017 (March 18)

(transformed with the additive color change or alpha blending)


"Eye color constancy signal: with the multiplicative color change"

The eyes appears to be cyan in the left panel, yellow in the middle panel, and red in the right panel, though they are gray.

Copyright Akiyoshi Kitaoka 2015 (Septemner 4)


"Eye color constancy signal: with the entire image covered by a color filter"

The eyes appears to be cyan in the left panel, yellow in the middle panel, and red in the right panel, though they are gray.

Copyright Akiyoshi Kitaoka 2015 (Septemner 2)




(Reproduction)

"Eye color constancy signal"

The right eye appears to be cyan in the left panel, yellow in the middle panel, and red in the right panel, though in each panel the right eye is the same color (= gray) as the left eye.

Copyright Akiyoshi Kitaoka 2013 (February 24)

(The green signal is greenish cyan in Japan)




"Eye color constancy: both eyes"

The right eye appears to be light blue and the left eye to be yellow, though they are physically gray.

Copyright Akiyoshi Kitaoka 2015 (May 8)



"Eye color constancy: both eyes 2"

The right eye appears to be red and the left eye to be dark blue, though they are physically gray.

Copyright Akiyoshi Kitaoka 2015 (May 8)


Color constancy 5

Color constancy 4

Color constancy 3

Color constancy 2

Color constancy 1


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