Illusion of Face 7

since December 26, 2009



"A demonstration of eye-line-induced eye size overestimation"

Is this a kind of the Delboeuf illusion? I am not sure...

Copyright Akiyoshi Kitaoka 2010 (October 11)

Thanks to Abe sensei




"A demonstration of only-above-iris-eye-line-induced eye size overestimation"

Though alignment is necessary...

Copyright Akiyoshi Kitaoka 2010 (October 12)



"Abe's misperception of eye area (Panda eye effect): a human face manga version"

The eyes of a panda appear to be larger than they really are because of the surrounding black circles.

Copyright Akiyoshi Kitaoka 2010 (October 6)

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).

Abe's misperception of eye area (Panda eye effect)

The eyes of a panda appear to be larger than they really are because of the surrounding black circles.

Copyright Tsuneyuki Aber 2010
from Tsuneyuki Abe, Tohoku University, Sendai, Japan, October 6, 2010

Professor Tsuneyuki Abe


Symposium "Multiphasic approaches to elucidate face perception"
Japanese Psychological Association, the 74th Conference
September 20, 2010, 15:30-17:30, Osaka University

Face illusions

Akiyoshi Kitaoka (Ritsumeikan University)

since September 16

Abstract: Visual illusion or optical illusion includes geometrical illusion, color illusion, brightness/lightness illusion, motion illusion, visual completion, trompe l’oeil, etc. Here I introduce a new category "face illusion" and demonstrate a variety of facial phenomena that should be listed in this category.  

Kitaoka, A. (2010) Face illusions. Talk in the symposium "Multiphasic approaches to elucidate face perception", Japanese Psychological Association, the 74th Conference, September 20, 2010, 15:30-17:30, Osaka University. new!

Click Presentation (html)




"Face square 2"

In the left image, the square contour appears to be elongated along the vertical axis of a face.

Copyright Akiyoshi Kitaoka 2010 (September 18)


"Akiyoshi's analyses of the fat face thin illusion: 1. Reproduction in CG"

The fat face thin illusion was proposed by Dr. Peter Thompson in the 6th Annual Best Illusion of the Year Contest in 2010. I has reproduced this illusion in CG. (A) is the original. (B) is the inverted image of (A). The face in (B) appears to be slimmer than that in (A). (C) shows a fat-face version. (D) is the inverted image, which shows a much slimmer face than (C). Thus, reproduction in CG has succeeded.

Copyright Akiyoshi Kitaoka 2010 (July 25)

"Akiyoshi's analyses of the fat face thin illusion: 2. Effects of shade and shadow"

I have removed shade and shadow. The fat face thin illusion remains, though shade and shadow appear to contribute to this illusion to some extent.

Copyright Akiyoshi Kitaoka 2010 (July 25)

"Akiyoshi's analyses of the fat face thin illusion: 3. Effects of facial parts"

I have removed eyes, mouth, nose and eyebrows. The fat face thin illusion remains. Thus, the facial contour alone can generate this illusion.

Copyright Akiyoshi Kitaoka 2010 (July 25)

"Akiyoshi's analyses of the fat face thin illusion: 4. Effects of cues other than face"

I have removed the background. The fat face thin illusion remains. Thus, face alone can generate this illusion.

Copyright Akiyoshi Kitaoka 2010 (July 25)

"Akiyoshi's analyses of the fat face thin illusion: 5. Upside-down faces"

I have tried upside-down faces. The fat face thin illusion remains even when the upside-down face (each right image) is conscious. This finding raises a question whether this is a face-specific illusion.

Copyright Akiyoshi Kitaoka 2010 (July 28)

"Akiyoshi's analyses of the fat face thin illusion: 6. Is it a mere geometrical illusion?"

I have simplified the face to a shape like half circle. For me, the fat face thin illusion almost disappears. This finding suggests that this illusion is not a simple geometrical illusion.

Copyright Akiyoshi Kitaoka 2010 (July 25)


"Face square"

The square contour appears to be elongated along the vertical axis of a face.

Copyright Akiyoshi Kitaoka 2010 (April 3)


"Eyebrow-induced eye-tilt illusion"

Eyes appear to tilt in the direction opposite to the tilts of eyebrows.

Copyright Akiyoshi Kitaoka 2009 (December 28)

Is this a face illusion in the world?


"Rotating eyes and mouth"

The image appears to be one of the three faces.

Copyright Akiyoshi Kitaoka 2009 (December 28)

Is this a face illusion in the world?


"Knocked-face illusion like 'Marquise Casati'"

Doubled eyes and mouths appear to be unstable.

Copyright Akiyoshi Kitaoka 2009 (December 26)


Illusion of face 6

Illusion of face 5

Illusion of face 4

Illusion of face 3

Illusion of face 2

Illusion of face


Akiyoshi's illusion pages