Classic geometrical illusion 14

since August 20, 2010


"Repeated-word tilt illusions: miscellaneous"

Horizontally aligned words appear to tilt.

Copyright Akiyoshi Kitaoka 2010



"A demonstration of Kaniza's amdal shrinkage"

Although the two girls are the same size, the right one appears to be thinner than the left one.

Copyright Akiyoshi Kitaoka 2010 (October 12)

amodal shrinkage



"Brentano-type Müller-Lyer illusion-like amodal shrinkage and amodal expansion"

Although the two squares are the same size, the right one appears to be thinner than the left one.

Copyright Akiyoshi Kitaoka 2010 (October 12)

Kanizsa, G. (1979) Organization in Vision (New York: Praeger)

Vezzani, S. (1999) Shrinkage and expansion by amodal completion: a critical review. Perception, 28, 935-947.



"Apparent convex and concave-dependent eye size illusion"

Although the two eyes are the same size, the upper one (might) appears to be larger than the lower one.

Copyright Akiyoshi Kitaoka 2010 (October 8)



"Apparent convex and concave-dependent eye size illusion 2"

Although the three eyes are the same size, the leftmost one (might) appears to be larger than the others.

Copyright Akiyoshi Kitaoka 2010 (October 8)

References

Abe, T., Sato, C. and Endo, M. (2009) Effect of eye shadow on eye size perception: An experimental examination manipulating the position, area and darkness of eye shadow. Journal of Japanese Academy of Facial Studies KAOGAKU, 9, 111-118 (in Japanese with English abstract).


"Compressed face"

The two faces are the same size and shape, but the right one appears to be compressed.

Copyright Akiyoshi Kitaoka 2010 (September 18)

cf. Shepard illusion or table-top illusion:

Shepard, R. N. (1990) Mind sights: original visual illusions, ambiguities, and other anomalies, with a commentary on the play of mind in perception and art. New York: Freeman.



"18 holes"

Vertical lines appear to tilt alternately.

Copyright Akiyoshi Kitaoka 2010 (July 8)


Classic geometrical illusion 13

Classic geometrical illusion 12

Classic geometrical illusion 11

Classic geometrical illusion 10

Classic geometrical illusion 9

Classic geometrical illusion 8

Classic geometrical illusion 7

Classic geometrical illusion 6

Classic geometrical illusion 5

Classic geometrical illusion 4

Classic geometrical illusion 3

Classic geometrical illusion 2

Classic geometrical illusion 1


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