Illusion of lightness #6

since August 31, 2015


"Illusory bright illusion"

The disks look disgustingly glaring.

Copyright Akiyoshi Kitaoka 2022 (August 13)








Copyright Akiyoshi Kitaoka 2022 (December 7)


Which image shows the stronger lightness illusion for you, (1) or (2)?

— Akiyoshi Kitaoka (@AkiyoshiKitaoka) January 12, 2022

"White and black with white and black with the same width"

The hair and clothes in the left image appear to be whitish whereas those in the right one appear to be blackish, though they are the same stripes of white and black.

Copyright Akiyoshi Kitaoka 2021 (May 4)


"White and black with white and black with the different width"

The hair and clothes in the left image appear to be whitish whereas those in the right one appear to be blackish, though the average luminance of the former is lower than that of the latter.

Copyright Akiyoshi Kitaoka 2021 (May 4)


Combination

— Akiyoshi Kitaoka (@AkiyoshiKitaoka) April 24, 2021


"Illusory Gabor patches"

There appear to be illusory line segments between two facing angles.

Copyright Akiyoshi Kitaoka 2021 (January 30)


"White and black bands"

The bands in the left image appear to be whitish whereas those in the right one appear to be blackish, though they are the same luminance.

Copyright Akiyoshi Kitaoka 2020 (September 5)


"White and black"

The hair and clothes in the left image appear to be whitish whereas those in the right one appear to be blackish, though they are the same luminance.

Copyright Akiyoshi Kitaoka 2018 (May 20)


"White and black with white and black"

The hair and clothes in the left image appear to be whitish whereas those in the right one appear to be blackish, though they are the same stripes of white and black.

Copyright Akiyoshi Kitaoka 2018 (March 21)


"A demo for the glare effect"

The center of each image appears to be bright.

Copyright Akiyoshi Kitaoka 2017 (July 12)


"A demo for lightness constancy"

The hair in the left image appears to be white and that in the right appears to be gray, though they are the same luminance.

Copyright Akiyoshi Kitaoka 2017 (February 5)


"White and black spades"

The left spade appears to be white whereas the right one black, though the former is darker in average luminance than the latter.

Copyright Akiyoshi Kitaoka 2016 (December 30)


Kitaoka, A. (2016). Spatial color mixture: RGB subtractive color mixture and CMY additive color mixture. Poster presentation at the 2016 Summer Meeting of the Vision Society of Japan, Toki-Messe, Niigata, Japan, August 18, 2016. Poster

Copyright Akiyoshi Kitaoka 2016 (August 28)


"Simultaneous brightness contrast with spatial color mixture"

The left circle appears to be whitish and the right one looks like black, though they are the same stripes of red and cyan.

Copyright Akiyoshi Kitaoka 2015 (September 26)



"Light flowers"

White parts appear to shine.

Copyright Akiyoshi Kitaoka 2015 (September 18)


"Black hair and black clothes versus white hair and white clothes"
(Anderson illusion)

One image shows a girl with black hair and black clothes while the other one with white hair and white clothes. Actually, the apparent black and white consist of the same pattern of grayscale.

Copyright Akiyoshi Kitaoka 2015 (September 5)


Hybrid




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"Black hair and black clothes versus white hair and white clothes"

(GIF animation)

One image shows a girl with black hair and black clothes while the other one with white hair and white clothes. Actually, the apparent black and white consist of the same stripes of black and white.

Copyright Akiyoshi Kitaoka 2015 (August 31)






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"Black hole versus white circle"

(GIF animation)

One image shows a black hole while the other one a white circle. Actually, the apparent black and white consist of the same stripes of black and white.

Copyright Akiyoshi Kitaoka 2015 (August 31)


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"Black hair and black clothes versus white hair and white clothes: Red and cyan"

(GIF animation)

One image shows a girl with black hair and black clothes while the other one with white hair and white clothes. Actually, the apparent black and white consist of the same stripes of red and cyan.

Copyright Akiyoshi Kitaoka 2015 (August 31)


Copyright Akiyoshi Kitaoka 2015 (August 18)

Kitaoka, A. (2015). Spatial color mixture and its relevance to the Munker illusion. Illusion Parade, 38th European Conference on Visual Perception (ECVP) (Liverpool), August 25, 2015. Presentation (html) --- Poster (doc)


Lightness illusion 5

Lightness illusion 4

Lightness illusion 3

Lightness illusion 2

Lightness illusion


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