Let's make an illusion image 2

since July 10, 2015


"Luminance-gradient-dependent lightness illusion"

A demo of lightness perception pic.twitter.com/BSVpgcuIw1

— Akiyoshi Kitaoka (@AkiyoshiKitaoka) 2018年8月12日


Copyright Akiyoshi Kitaoka 2015 (July 4)



Click the image and you will download a high-resolution file.


Click the image and you will download a high-resolution file.


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Squares are of the same luminance gradient.
Copyright Akiyoshi Kitaoka 2015 (July 4)


Copyright Akiyoshi Kitaoka 2015 (July 4)



Movie demo: lightness02-00237.mp4

Copyright Akiyoshi Kitaoka 2015 (November 18)


Copyright Akiyoshi Kitaoka 2018 (August 14)



A schematic explanation


Professor Alan Gilchrist's talk in Ritsumeikan (March 17, 2006)


"Rotating snakes"

Copyright Akiyoshi Kitaoka 2015 (July 8)




(Click it and you will download a high-resolution file)


"Footstep illusion"

Copyright Akiyoshi Kitaoka 2015 (July 7)


footstepillusion01bs4-00221MTS.mp4 






Copyright Akiyoshi Kitaoka 2018 (June 18)


footstep-VID_20180617_185322.mp4






Copyright Akiyoshi Kitaoka 2018 (June 18)


footstep-VID_20180618_110112.mp4




(Click it and you will download a high-resolution file)

Copyright Akiyoshi Kitaoka 2015 (June 9)

Anstis, S. M. (2001). Footsteps and inchworms: Illusions show that contrast modulates motion salience. Perception, 30(7), 785-794.




Copyright Akiyoshi Kitaoka 2016 (November 11)













footstep-VID_20170831_103511.mp4


"Chromatic scintillating grid illusion"

Copyright Akiyoshi Kitaoka 2015 (July 6)



Hermann grid illusion and an image to make a chromatic scintillating grid illusion demo (Click it and you will download a high-resolution file)
Copyright Akiyoshi Kitaoka 2015 ((July 6)




Schrauf, M., Lingelbach, B., Wist, E.R. (1997) The scintillating grid illusion. Vision Research, 37, 1033-1038.


"Scintillating grid illusion 2"

Copyright Akiyoshi Kitaoka 2015 (July 6)



Hermann grid illusion and an image to make an scintillating grid illusion demo (Click it and you will download a high-resolution file)
Copyright Akiyoshi Kitaoka 2015 ((July 6)




Schrauf, M., Lingelbach, B., Wist, E.R. (1997) The scintillating grid illusion. Vision Research, 37, 1033-1038.


"Optimized Fraser-Wilcox illusion, Type IIa"

Copyright Akiyoshi Kitaoka 2015 (July 4)



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"Munker illusion"

Copyright Akiyoshi Kitaoka 2015 (June 9)


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Copyright Akiyoshi Kitaoka 2015 (June 29)




Copyright Akiyoshi Kitaoka 2015 (July 9)




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Yellowish illusion

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Copyright Akiyoshi Kitaoka 2016 (February 17)


"White effect"

Copyright Akiyoshi Kitaoka 2015 (June 7)



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White, M. (1979) A new effect on perceived lightness. Perception, 8, 413-416.


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