This is good. Or maybe it’s bad
Either way, perhaps @AkiyoshiKitaoka can explain why it is doing what it’s doing. It works the same way regardless of the orientation, so it must have to do with the rotation direction alone. But why?https://twitter.com/jagarikin/status/1229954803603689473 …
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Replying to @markmccaughrean
This movie work directly depends on Arthur Shapiro's demos. http://www.shapirolab.net/
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Replying to @AkiyoshiKitaoka @markmccaughrean
This illusory motion is induced by luminance changes of areas. The way is shown in the attached image. Kitaoka, A. (2006). Configurational coincidence among six phenomena: A comment on van Lier and Csathó (2006). Perception, 35, 799-806. https://journals.sagepub.com/doi/10.1068/p5319b …pic.twitter.com/AjixrxXYCT
2 replies 1 retweet 7 likes -
Replying to @AkiyoshiKitaoka
Thank you, Kitaoka-san. I'll read through those. I'm curious to understand why the anti-clockwise rotating ring appears to get bigger, while the clockwise one gets smaller. Is there a simple reason why changing rotation direction changes the sign of the "magnification illusion"?
1 reply 0 retweets 2 likes
I think because motion affects the perceived position of objects. cf. flash lag effect
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