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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) -------------------------------------------------------------------------------- Color illusion 11 Color illusion 10 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 -------------------------------------------------------------------------------- Top page