Color illusion 12
Since May 24, 2009
"How to make the four types of color illusions"
Hearts of the same color (R=255, G=0, B=127) appear to be pink or orange, induced by the Munker illusion, the chromatic dungeon illusion, the dotted color illusion, and the De Valois-De Valois illusion. To download high-resolution files, click here (8000 x 3262 pixel, 10MB)
Copyright Akiyoshi Kitaoka 2009 (June 1)
References
| Munker illusion | Munker, H. (1970) Farbige Gitter, Abbildung auf der Netzhaut und übertragungstheoretische Beschreibung der Farbwahrnehmung. Habilitationsschrift, Ludwig-Maximilians-Universität, München. |
| chromatic dungeon illusion | For the dungeon illusion: Bressan, P. (2001) Explaining lightness illusions.
Perception, 30, 1031-1046. Kitaoka (2007) http://www.psy.ritsumei.ac.jp/~akitaoka/saishin22e.html |
| dotted color illusion | For the dotted brightness illusion: White, M. (1982) The assimilation-enhancing effect of a dotted surround upon a dotted test region. Perception, 11, 103-106. Kitaoka (2008) http://www.psy.ritsumei.ac.jp/~akitaoka/color10e.html |
| De Valois-De Valois illusion | De Valois, R. L. and De Valois, K. K. (1988) Spatial Vision. New York: Oxford University Press. |
cf.
"How to make the four types of brightness illusions"
Spades of the same brightness (R=127, G=127, B=127) appear to be darker or brighter, induced by White's effect, Bressan's dungeon illusion, White's dotted brightness illusion, and the De Valois-De Valois illusion. To download high-resolution files, click here (8000 x 3262 pixel, 5MB)
Copyright Akiyoshi Kitaoka 2009 (June 1)
References
| White's effect | White, M. (1979) A new effect on perceived lightness. Perception, 8, 413-416. |
| dungeon illusion | Bressan, P. (2001) Explaining lightness illusions. Perception, 30, 1031-1046. |
| dotted brightness illusion | White, M. (1982) The assimilation-enhancing effect of a dotted surround
upon a dotted test region. Perception, 11, 103-106. |
| De Valois-De Valois illusion | De Valois, R. L. and De Valois, K. K. (1988) Spatial Vision. New York: Oxford University Press. |
"How to make kibami (yellow-inducing) illusions using the chromatic dungeon illusion"
The right heart (R=255, G=255, B=255) in each block appear to be yellowish, induced by the chromatic dungeon illusion. To download high-resolution files, click here (4000 x 2060 pixel, 10MB)
Copyright Akiyoshi Kitaoka 2009 (June 2)
"How to make kibami (yellow-inducing) illusions using the anomalous chromatic dungeon illusion"
The right heart (R=255, G=255, B=255) in each block appear to be yellowish, induced by the chromatic dungeon illusion. To download high-resolution files, click here (4000 x 2060 pixel, 10MB)
Copyright Akiyoshi Kitaoka 2009 (June 2)
"Hearts of four colors"
There appear to be hearts of pink, orange, blue and yellow. Actually, pink and orange are the same color (R=255, G=0, B=150).
Copyright Akiyoshi Kitaoka 2009 (May 24)
"Hearts of four-color checker pattern"
There appear to be hearts of pink and orange. Actually, the apparent pink and orange are the same color (R=255, G=0, B=150).
Copyright Akiyoshi Kitaoka 2009 (May 24)
"Hearts of four-color checker pattern 2"
There appear to be hearts of yellowish green and cyan, though they are the same color.
Copyright Akiyoshi Kitaoka 2009 (May 24)
"Striped pink and orange hearts"
There appear to be hearts of pink and orange. Actually, they are identical (R=255, G=0, B=104).
Copyright Akiyoshi Kitaoka 2009 (May 24)
"Striped green and blue hearts"
There appear to be hearts of light green or light blue. Actually, they are identical (R=0, G=255, B=150).
Copyright Akiyoshi Kitaoka 2009 (May 24)
"A group of green and blue spirals"
There appear to be spirals of light green or light blue. Actually, they are identical (R=0, G=255, B=150).
Copyright Akiyoshi Kitaoka 2009 (May 24)
