Editing Ambiguous image (section)

==Accidental viewpoints==
An [[accidental viewpoint]] is a single visual position that produces an ambiguous image. The accidental viewpoint does not provide enough information to distinguish what the object is.<ref>{{cite journal | last1 = Koning | first1 = A. | last2 = van Lier | first2 = R. | year = 2006 | title = No symmetry advantage when object matching involves accidental viewpoints | journal = Psychological Research| volume = 70 | issue = 1| pages = 52–58 | doi = 10.1007/s00426-004-0191-8 | pmid = 15480756 | s2cid = 35284032 | hdl = 2066/55694 | hdl-access = free }}</ref> Often, this image is perceived incorrectly and produces an illusion that differs from reality. For example, an image may be split in half, with the top half being enlarged and placed further away from the perceiver in space. This image will be perceived as one complete image from only a single viewpoint in space, rather than the reality of two separate halves of an object, creating an [[optical illusion]]. Street artists often use tricks of point-of-view to create two-dimensional scenes on the ground that appear three-dimensional.