Curvature Blindness Illusion. A new article published int he journal, i-Perception presents a new optical illusion called “curvature blindness illusion”. It is written by a researcher, Kohske Takahashi. Look at the image below. You can see in the top left on the white background, every set of lines has the same curve.
The famous spinning dancer optical illusion is an ambiguous image whose direction can be determined by your visual preference. The famous spinning dancer optical illusion is an ambiguous image whose direction can be determined by your visual preference.
The café wall illusion is a geometrical-optical illusion in which the parallel straight dividing lines between staggered rows with alternating black and white "bricks" appear to be sloped. It was first described under the name Kindergarten illusion in 1898, and re-discovered in 1973 by Richard Gregory.
Black looks black and white looks white regardless of the level of illumination. The putative mechanism for brightness constancy is light adaptation - retinal responses depend on average intensity. Most of the time this works great. However, sometimes it screws up, e.g., yielding the simultaneous brightness contrast illusion.
Penrose stairs The Penrose stairs or Penrose steps, also dubbed the impossible staircase, is an impossible object created by Lionel Penrose and his son Roger Penrose. A variation on the Penrose triangle, it is a two-dimensional depiction of a staircase in which the stairs make four 90-degree turns as they ascend or descend yet form a continuous loop, so that a person could climb them forever and never get any higher.
The Necker cube is an optical illusion first published as a rhomboid in 1832 by Swiss crystallographer Louis Albert Necker. It is a simple wire-frame drawing of a cube with no visual cues as to its orientation, so it can be interpreted to have either the lower-left or the upper-right square as its front side.