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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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    1. Akiyoshi Kitaoka‏ @AkiyoshiKitaoka Mar 31
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      当社の旗。「普通ですね」という感じかと思いますが、ネオン色拡散の画像の一種と思います。ネオン色拡散の方が、こういう画像のなれの果て、と私は考えます。pic.twitter.com/WmgvPDAniA

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      Akiyoshi Kitaoka‏ @AkiyoshiKitaoka Mar 31
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      同じ画像を使った色の同化画像。背景はグレースケール。こういうのはネオン色拡散とは言わず、色の同化と呼ばれる。なお、color assimilation grid illusion のアイデアは、2019年7月に、エイヴィン・コーロース氏(Øyvind Kolås)によって提出されました。 https://www.patreon.com/posts/color-grid-28734535 …pic.twitter.com/H5fOiJ1KYi

      1:01 AM - 31 Mar 2020
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      • Suzuki, Kiyoshige し㌖げ㌖の㌖β㌖版
      1 reply 1 retweet 1 like
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        2. Akiyoshi Kitaoka‏ @AkiyoshiKitaoka Mar 31
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          背景を黒にすると、さらに「普通ですね」という感じ。しかし、これもネオン色拡散の親玉というべきと思います。pic.twitter.com/VnQJ1cdF3U

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        3. Akiyoshi Kitaoka‏ @AkiyoshiKitaoka Mar 31
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          背景をベタ塗りの灰色にした画像。まだこの方が鮮やかで、color assimilation grid illusion にしなくても(グレースケールにした画像を残さなくても)、色グリッドだけで現画像を再現できることがわかります。色に関しては、ですが。pic.twitter.com/U56XGenv0K

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        4. Akiyoshi Kitaoka‏ @AkiyoshiKitaoka Mar 31
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          ちなみに、ネオン色拡散(neon color spreading)の基本図形は、こんな感じです。pic.twitter.com/NYkRiDgzwa

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        5. Akiyoshi Kitaoka‏ @AkiyoshiKitaoka Mar 31
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          下記文献が最初だとして引用するのが普通と思います。 Van Tuijl, H. F. J. M. (1975). A new visual illusion: Neonlike color spreading and complementary color induction between subjective contours. Acta Psychologica, 39, 441-445.

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        6. Akiyoshi Kitaoka‏ @AkiyoshiKitaoka Mar 31
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          しかし、おそらく下記のイタリア語の論文が先だと思います。日本語論文に先行するものはないと思いますが、見逃しているかもしれません。 Varin, D. (1971) Fenomeni di contrasto e diffusione cromatica nell’organizzazione spaziale del campo percettivo. Rivista di Psicologia, 65, 101-128.

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        7. Akiyoshi Kitaoka‏ @AkiyoshiKitaoka Mar 31
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          この一連のツイートは、本日某テレビ局から「色彩同化グリットと呼ばれている白黒の絵が色付きの線を加えると、カラーに見えるというのを研究している日本の研究者を知らないか?」と無礼に聞かれて、虫の居所が悪かったので速攻で断ったことを反省して、作成しました。

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        8. Akiyoshi Kitaoka‏ @AkiyoshiKitaoka Mar 31
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          こちらにアップしておきました。 http://www.psy.ritsumei.ac.jp/~akitaoka/color18.html … いや~、本学の宣伝になったかもしれないのに、惜しいことをしました。広報課のNさん、不機嫌を丸出ししてしまいまして、すみませんでした。コ、いや花粉症が厳しくて。pic.twitter.com/zY9M8ano6V

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        9. Akiyoshi Kitaoka‏ @AkiyoshiKitaoka Mar 31
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          ちなみに、このツツジの写真は、昨日某所で私が撮影したものです。昨日は確か3月30日だったと思いますが。pic.twitter.com/OY0yYdl7ER

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        10. End of conversation

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