A girl of blue eyes 2 
A girl of blue eyes 2
since July 20, 2006
Warning: This page includes real animations. Please do not keep watching them for a long time. Although this page has carefully avoided the known harmful stimuli, unknown ones might happen to be included. Never copy them.
"A quick change"
Nine things changes when one image changes to the other one,
but it takes time for observers to detect them all.
cf. my demo of "change blindness"
Copyright Akiyoshi Kitaoka 2007 (February 16)
"Wollaston illusion 3"
In image 1 the girl appears to look downward, while in image 2 (when the cursor is put on the image) she appears to see slightly upward. Actually, only the position of the contours of the head and face is different between the two images.
Copyright Akiyoshi .Kitaoka 2006 (July 21)
300ms / frame
"Apparent movement 4: Apparent rotation like a Ferris wheel"
Apparent rotation is predominant. Moreover, apparent rotation is reversed frequently and can be reversed voluntarily.
Copyright Akiyoshi .Kitaoka 2006 (July 26)
500ms / frame
200ms / frame
"Apparent movement 3"
When the rotating angle is small (22.5º in these movies), apparent rotation is predominant (for Akiyoshi round motion is predominant in the upper movie). Moreover, apparent rotation is reversed frequently and can be reversed voluntarily.
Copyright Akiyoshi .Kitaoka 2006 (July 26)
"Apparent movement 3"
A girl appears to increase to four copies.
Copyright Akiyoshi .Kitaoka 2006 (July 22)
In Japan, this skill is called 'bunshin no jutsu'. It is said that 'ninja' (spies) used to master this.
"Apparent movement 2"
Girls appear to move along trajectories of STRAIGHT line. Round motion is cheifly perceived. The combination is reversible between (1) and (2). (1) The upper one and the right one; the lower one and the left one. (2)The upper one and the left one; the lower one and the right one. Each image is displayed for 500ms.
Copyright Akiyoshi .Kitaoka 2006 (July 22)
"Apparent movement 1"
Girls appear to move along trajectories of arc shape. Round motion is cheifly perceived. The combination is reversible between (1) and (2). (1) The upper one and the right one; the lower one and the left one. (2)The upper one and the left one; the lower one and the right one. Each image is displayed for 500ms.
Copyright Akiyoshi .Kitaoka 2006 (July 22)
When images are presented fast (200ms), rotation is also observed.
Even when images are presented fast (200ms), rotation is not easily observed in this configuration.
"Wollaston illusion 2"
In image 1 the girl appears to look up, while in image 2 (when the cursor is put on the image) she appears to see you. Actually, only the position of the contours of the head and face is different between the two images.
Copyright Akiyoshi .Kitaoka 2006 (July 21)
"Wollaston illusion"
The left girl appears to gaze at you while the right one appears to see rightward, though the eyes are identical to each other. This phenomenon was proposed by Wollaston (1824).
Copyright Akiyoshi .Kitaoka 2006 (July 20)
Wollaston, W. H. (1824) On the apparent direction of eye in a portrait. Philosophical Transactions of the Royal Society of London, B114, 247-256. (I do not have the copy, so I have not confirmed this paper yet)