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AkiyoshiKitaoka's profile
Akiyoshi Kitaoka
Akiyoshi Kitaoka
Akiyoshi Kitaoka
@AkiyoshiKitaoka

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Akiyoshi Kitaoka

@AkiyoshiKitaoka

I am an experimental psychologist who studies visual illusions as well as makes illusion artworks. #illusion #opticalillusion #perception #錯視

Kyoto, Japan
ritsumei.ac.jp/~akitaoka/inde…
Joined December 2011

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    Akiyoshi Kitaoka‏ @AkiyoshiKitaoka 3 Feb 2018
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    There appear to be spirals of blue and black and spirals of black and yellow, but the perceived yellow is illusory; it is actually white. これを見た人には「その黄色は青の対比ですね」と言われそう。それでよいとは思いますが、その位置から対比効果が及ぶというのは未知だったのでは。pic.twitter.com/G49iQfkPuk

    12:43 AM - 3 Feb 2018
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    • Robert Swain Bole Dmitry Kislyuk Paul McKellar gu 3.141592653589793 🖖 Srijit Sanyal JuneChul Roh wikihow séance
    5 replies 89 retweets 221 likes
      1. Akiyoshi Kitaoka‏ @AkiyoshiKitaoka 3 Feb 2018
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        いや、新しくなかったようだ。 Illusory yellow demonstrated in the neon color spreadingpic.twitter.com/iO9yxCOp4U

        0 replies 3 retweets 18 likes
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      1. Mark McCaughrean‏ @markmccaughrean 3 Feb 2018
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        Replying to @AkiyoshiKitaoka

        It's remarkable how it's scale & resolution dependent. You can make the yellow come & go by zooming in, holding the picture further away, squinting. There appears to be a rather specific scale at which the white switches to yellow. Very interesting 👍

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      2. Justin Solomon‏ @JustinMSolomon 4 Feb 2018
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        Replying to @AkiyoshiKitaoka @optiML

        Hm, if I don't see any yellow should I go to the doctor?

        1 reply 0 retweets 0 likes
      3. Suvrit Sra‏ @optiML 4 Feb 2018
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        Replying to @JustinMSolomon @AkiyoshiKitaoka

        You have maybe processed way too many color maps and manifolds perhaps!

        0 replies 0 retweets 1 like
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      2. Glen Etzkorn‏ @EtzkornGlen 3 Feb 2018
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        Replying to @AkiyoshiKitaoka

        or it is more a brown afterimage reversal of darker blue?

        1 reply 0 retweets 0 likes
      3. Glen Etzkorn‏ @EtzkornGlen 3 Feb 2018
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        Replying to @EtzkornGlen @AkiyoshiKitaoka

        notably in this afterimage to the side the blue incasing the volutes darkens and takes on a quick aspect of turning darker and sensation of reversal to brown.pic.twitter.com/1xRtvbeCTJ

        0 replies 0 retweets 0 likes
      4. End of conversation
      1. bee‏ @ISDIVFX 4 Feb 2018
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        Replying to @AkiyoshiKitaoka

        True. Close one eye and look at the black,yellow vanishes.

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