A brilliant illustration of the Kanizsa triangle made out of kiwi fruit by Flickr
The Kanizsa triangle is often used to argue that a purely ‘bottom-up’ approach to understanding vision – that says we generate our perception solely from building up from the small details of what we see – is flawed.
The triangle illusion is named after the Italian psychologist Gaetano Kanizsa.
Kanizsa was also an accomplished artist who created numerous paintings that played with the concepts of perception.
