Curvature blindness illusion
曲がり盲
曲度视错觉

ナミナミの線とカクカクの線が見えますか？でも、本当は、全部ナミナミの線なんです。白い場所、黒い場所では、全部ナミナミに見えますね。灰色の場所も、カクカクみえるけど、本当はナミナミです。よーく見てみてね。

Can you see the wavy lines and the jagged lines? But in reality, they're all wavy lines. In both the white and black areas, every line appears wavy, right? The lines on the gray areas may look jagged, but they're actually wavy too. Look carefully!!

Takahashi, K. (2017). Curvature blindness illusion. i-Perception, 8(6), 2041669517742178.