Akiyoshi Kitaoka
@AkiyoshiKitaoka
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I am an experimental psychologist who studies visual illusions as well as makes illusion artworks. #illusion #opticalillusion #perception #錯視
Kyoto, Japan
Joined December 2011
知覚心理学の応用「見られてはまずいものを迅速に証拠隠滅する方法」. 一部の認定心理士は知っている。私がトークしたから。
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his Coca-Cola can appears reddish, though it consists of black and white random dots.
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The inset appears to move when the image is swayed.
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Some observer sees red in front of blue, and another observer sees blue in front of red.
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理論心理学会第66回大会（オンライン by 帝京大学）（オンライン視聴可能期間：2020年12月7日-12月20日 ）のご案内.参加申し込み締め切りは、11月25日. 会員.一般：3000円.学生：2000円.非会員.一般：4000円.学生：2000円. 講演1.「錯視とはなにか」by 北岡明佳.あります。
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Buses appear to be reddish, though the pixels are not.
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「桃」."Peach". Concentric circles appear to be entangled.
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Each row appears to move. Each row is horizontally aligned but appears to tilt.
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Rings appear to rotate when observers approach or move away from the image during fixating at the center.
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The red line is drawn at the midpoint of the height of the trapezoid, but it appears to be lower than it is.
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Patterns are aligned vertically and horizontally, but they appear to bend. Moreover, there appear to be dark-gray turtles and light-gray ones, though they are the same luminance.
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This Coca-Cola can appears to be reddish, though it consists of black and white check patterns. コーラの缶は白黒の市松模様であるが、赤く見える。
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The inset of the left block appears to be purplish-red whereas that of the right one appears to be orange, though they are the same color.
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Concentric circles made up of tilted arcs appear to be spirals.
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There appear to be spirals of light green or light blue. Actually, they are identical (r = 0, g = 255, b = 150). (Munker illusion)
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his Coca-Cola can appears reddish, though it consists of black and white stripes.
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My face is embedded in this image. When it is blurred, e.g. seen from a distant or without a pair of glasses, my face is discernible. I have learned by myself how to make this type of illusion, but I do not know whom I should cite for this effect. Does anyone have information?
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You may see a Coca-Cola can reddish, though this image consists of black, white, and cyan (no red).
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An instance of the Fraser spiral illusion: Concentric circles appear to be spirals.
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For some people, red appears to in front of blue. On the other hand, for other people, blue appears to in front of red.
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Chromostereopsis. The majority of people see red in front of blue, while 10-20% see blue in front of red.
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フットステップ錯視デモの新手法を開発した。. A new demo of the footstep illusion
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Nine dots in the cyan square appear to tinted reddish, though they are the same gray as the rightmost dots.
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The hair and clothes in the left image appear to be white whereas those in the right image to be black, though they are the same luminance. This phenomenon is called "lightness constancy".
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A moving square appears to change in color, though the color is constant.
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Which is hidden in the leftmost image, (1), (2) or (3)?
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A color ring appears to extinguish when observers fix their eyes on the cross.
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A demo of the Nakamura illusion: The upper half appears to be brighter than the lower one when observers approach the image during fixating at the center. The reversal is observed when observers move away from the image.
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Many people see red in front of blue, while a small number of people see blue in front of red.
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Vertically and horizontally aligned gray lines appear to curve inward.
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The inset appears to move when the image is swayed. スマホを振ると、落として泣く、ではなく、ダルマが動いて見える。
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The body of this car appears to be bluish, though this image consists of only pixels of red hue.
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An instance of the kickback illusion (Howe et al., 2006). Blue and yellow rectangles are moving at a constant speed, but their edges appear to be caught by thin lines.
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最新作「コロナ渦」できました！. Concentric rings appear to be spirals.
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ゲシュタルト法則のうち、「よい連続の要因」（Good continuation）を用います。よい連続の要因は、なめらかにつながっている線やエッジを途中で切れているとして知覚することは困難である、という法則です。数学的に言えば、「微分可能な線はつながって見える」となりますかね。
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Chromostereopsis. The majority of observers (50-80%?) see red in front of blue, while some observers (10-30%?) see blue in front of red.
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Horizontally aligned rows appear to tilt alternately.
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The upper car is just a copy of the lower one, but the former appears to be larger than the latter.
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Illusory yellow (upper row) and illusory blue (lower row)
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Many people see red in front of blue whereas a few people see blue in front of red (chromostereopsis).
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The left heart appears to be bluish whereas the right one greenish, though they are the same color.
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For some people, red appears to be in front of blue. For some people, blue appears to be in front of red. This phenomenon is called "chromostereopsis".
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Veins appear bluish or greenish, but the pixel colors are not. 静脈は青く見えるが、それは色の錯視である。
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