Illusion of Face 5
since April 18, 2009
"Bogart illusion with a young man"
The left man appears to gaze rightward, while the left man, just the negative image of the right, appears to see toward us.
Copyright Akiyoshi Kitaoka 2009 (August 15)
Bogart illusion (Sinha, 2000)
Sinha, P. (2000). Here's looking at you, kid. (The perception of gaze direction) Perception, 29, 1005-1008.
"Thatcher illusion with a blond lady"
The face of the right image does not appear to be so funny, but it does if the image is upright as shown in the left image below.
Copyright Akiyoshi Kitaoka 2009 (August 6)
"An illustration of the bloodshot illusion 2"
The luminance-induced gaze shift or the bloodshot illusion (Ando, 2002). Although the position of the iris and pupil in each eye's contour is the same among the three images, the apparent direction of gaze is shifted to the darkening part of the sclera (the white of the eye).
Copyright Akiyoshi Kitaoka 2009 (August 6)
Ando, S. (2002). Luminance-induced shift in the apparent direction of gaze. Perception, 31, 657-674.
"Anti-bloodshot illusion"
Although the position of the iris and pupil in each eye's contour is the same among the three negative images, the apparent direction of gaze is shifted against the lightening part of the sclera.
Copyright Akiyoshi Kitaoka 2009 (August 6)
(This effect is the same as the bloodshot illusion, of course)
cf. Bogart illusion (Sinha, 2000)
Sinha, P. (2000). Here's looking at you, kid. (The perception of gaze direction) Perception, 29, 1005-1008.
"Size illusion of oblique faces 2"
The right face appears to be larger than the left one, though they are the same size.
Copyright Akiyoshi Kitaoka 2009 (August 6)
"Jastrow illusion of face 2"
The lower face appears to be larger than the upper one though they are the same size.
Copyright Akiyoshi Kitaoka 2009 (August 6)
"'Knocked-face' illusion with a blond lady"
Eyes and mouths appear to knock.
Copyright Akiyoshi Kitaoka 2009 (July 31)
"Wollaston illusion with a blond lady"
The left face appears to gaze at the observer while the right one appears to see rightward, though the eyes of the former are just the same as those of the latter. This phenomenon was proposed by Wollaston (1824). In addition, the pictorial size of the right eye is larger than that of the left one; this fact is realized more easily in the right image than in the left one.
Copyright Akiyoshi Kitaoka 2009 (July 31)
Wollaston, W. H. (1824) On the apparent direction of eye in a portrait. Philosophical Transactions of the Royal Society of London, B114, 247-256.
"Hollow mask illusion of Akaoni"
Akaoni = the red devil in Japan
The right mask appears to head for us, though it is the reversal of the left mask.
Copyright Akiyoshi Kitaoka 2009 (April 18)
Hollow mask illusion
Gregory, R. L. (1970) The Intelligent Eye. London: Weidenfeld and Nicolson.
Schröder, H. (1858) Ueber eine optische Inversion bei Betrachtung verkehrter, durch optische Vorrichtung entworfener physischer Bilder. Annalen der Physik und Chemie, 181, 298-311.
Masks popular in Japan
To buy them, click.
Their hollow masks
