Article says “Furthermore, the human vision system is a bit weird and perfect circles look vertically elongated. You have to make them non-circular for people to consider them properly circular.”
Anyone have a reference for this?
Anyone have a reference for this?
From reading this, the error with circles appears to be <1%.
Also, obligatory mention whenever horizontal-vertical illusion comes up: https://www.nippon.com/en/japan-topics/c12403/