今井省吾先生の錯視はこちら。 Imai's illusion (Shogo Imai)pic.twitter.com/H5ONF0Ok3j
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The same appearance when line segments are replaced with dot rowspic.twitter.com/8wTfBhcWr6
Actually, to me they seem to bend outwards. Same for the bottoms of the squares below.
Thank you for your report.
The ends of each segment appear (to me) to be further out of the circle than the middle of each segment - is that what you meant by "curve inward"?
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