Akiyoshi’s Illusion Pages
One of Akiyoshi Kitaoka's recent work that I found absolutely stunning is the following illusion where a ring of one colour appears to be either in front of or behind two rings of another colour:<p><a href="https://twitter.com/AkiyoshiKitaoka/status/1681268618485456896" rel="nofollow noreferrer">https://twitter.com/AkiyoshiKitaoka/status/16812686184854568...</a><p><a href="https://nitter.net/AkiyoshiKitaoka/status/1681268618485456896" rel="nofollow noreferrer">https://nitter.net/AkiyoshiKitaoka/status/168126861848545689...</a><p>To my perception, the blue ring appears to float above the red rings. It feels a bit like an autostereogram where a 3-dimensional image emerges out of a 2-dimensional image. However, there is no autostereogram in this image and there is no crossing of eyes involved. The 3-dimensional image arises out of an otherwise plain image of differently coloured rings on a dark background.<p>An analysis of this illusion is available here: <a href="http://www.psy.ritsumei.ac.jp/~akitaoka/Kitaoka2015_ReferenceWorkEntry_Chromostereopsis.pdf" rel="nofollow noreferrer">http://www.psy.ritsumei.ac.jp/~akitaoka/Kitaoka2015_Referenc...</a>