Color illusion 22
Since January 30, 2022
Copyright Akiyoshi Kitaoka 2022 (February 18)
http://www.psy.ritsumei.ac.jp/~akitaoka/JavaScript-DKL01.html
Copyright Akiyoshi Kitaoka 2022 (February 18)
A CIE xy chromaticity diagram showing isolumoinant colors: Y = 0.075 ± 0.005 (the uppermost), Y = 0.300 ± 0.005 (the second), Y = 0.500 ± 0.005 (the third), Y = 0.800 ± 0.005 (the lowermost)
Copyright Akiyoshi Kitaoka 2022 (February 19)
http://www.psy.ritsumei.ac.jp/~akitaoka/JavaScript-equiluminance01.html
Copyright Akiyoshi Kitaoka 2022 (February 19)
Copyright Akiyoshi Kitaoka 2022 (February 19)
Equiluminant colors plotted on CIE xy chromaticity diagrams pic.twitter.com/7XpPRzcTDS
— Akiyoshi Kitaoka (@AkiyoshiKitaoka) February 19, 2022
Colors of my diplay (EIZO FlexScan EQ2730V)
Copyright Akiyoshi Kitaoka 2022 (February 18)
Copyright Akiyoshi Kitaoka 2022 (February 17)
Do you see illusory red?
— Akiyoshi Kitaoka (@AkiyoshiKitaoka) February 15, 2022
a web program to put the colors of an image onto the CIE xy chromaticity diagram
http://www.psy.ritsumei.ac.jp/~akitaoka/JavaScript-CIExy03.html
Copyright Akiyoshi Kitaoka 2022 (February 2, 17)
L*a*b*
CIE xy chromaticity diagram of sRGB
Copyright Akiyoshi Kitaoka 2022 (February 3, 17)
L*a*b*
DKL space
LMS
Copyright Akiyoshi Kitaoka 2022 (February 3)
An image to show additive color mixture using color assimilation
Copyright Akiyoshi Kitaoka 2022 (February 1)
An image to show subtractive color mixture using color assimilation
color illusion with temporal color mixture
"Black and white make red"
Copyright Akiyoshi Kitaoka 2022 (January 30)
http://www.psy.ritsumei.ac.jp/~akitaoka/JavaScript-tempora_color_mixture03.html
"Black and white make green"
"Black and white make blue"
"Black and white make cyan"
"Black and white make magenta"
"Black and white make yellow"
The movies above
temporal_color_mixture-illusory_red01.mp4
temporal_color_mixture-illusory_green01.mp4
temporal_color_mixture-illusory_blue01.mp4
temporal_color_mixture-illusory_cyan01.mp4
temporal_color_mixture-illusory_magenta01.mp4
temporal_color_mixture-illusory_yellow01.mp4
"Illusory yellow"
The can with bear faces appears to be yellowish, though the colors of the pixels are green.
Copyright Akiyoshi Kitaoka 2022 (January 27)
cf.