The latest works 33
since June 19, 2008
"Fireplace"
The fireplace appears to be collapsing.
Copyright Akiyoshi Kitaoka 2008 (July 21)
"The earth and Venus"
The 'earth' and 'Venus' appear to move.
Copyright Akiyoshi Kitaoka 2008 (July 21)
References
Ouchi, H. (1977) Japanese optical and geometrical art.
Mineola, NY: Dover.
Spillmann, L., Heitger, F. and Schuller, S. (1986)
Apparent displacement and phase unlocking in checkerboard patterns. Paper
presented at the 9th European Conference on Visual Perception, Bad
Nauheim
Ashida, H. (2002) Spatial frequency tuning of the Ouchi illusion and its
dependence on stimulus size. Vision Research, 42, 1413-1420.
"Yuyake koyake"*
*evening glow
The inner three rings appear to rotate counterclockwise. Moreover, when observers fix their eyes on the center and approach or move away from the image, the inner rings appear to rotate clockwise or counterclockwise, respectively.
Copyright Akiyoshi Kitaoka 2008 (July 15)
"Rotation of the earth"
The two images are the same, but the rotation of the left earth appears to proceed as compared with that of the right one.
Copyright Akiyoshi Kitaoka 2008 (July 15)
"Demon eyes"
The two red lights appear to change in lightness when observers move their eyes. Moreover, the left disk appears to rotate clockwise while the right counterclockwise.
Copyright Akiyoshi Kitaoka 2008 (July 10)
"Reversal of rotating sea snakes"
The left circle appears to rotate counterclockwise while the right clockwise, though the wavy pattern of the left is just the same as that of the right.
Copyright Akiyoshi Kitaoka 2008 (July 10)
"Bifidobacteria"
Horizontally aligned rows of bacteria appear to tilt.In addition, gray bacteria appear to be slightly tinted reddish.
Copyright Akiyoshi Kitaoka 2008 (July 10)
"Four cards"
It appears as if there were blue and green gratings, though they are of the same color.
Copyright Akiyoshi Kitaoka 2008 (July 7)
Albert pointed out that the apparent blue and green gratings are really different in color. This error occurred in the downsizing process with antialiasing.from the high-resolution (giant) bitmap (12000 x 4957 pixel). The image shown below is an image without antialiasing, in which the gratings are just the same color (R = 0, G = 255, B = 151). <July 12, 2008>
The image shown below might be better, in which the gratings are just the
same color (R = 0, G = 255, B = 150). <July 12, 2008>
"Checkerboard of flowers"
The image appears to scintillate. Illusory orange appears to be induced in the center of each blue flower while illusory blue appears to be seen in the center of each orange flower.
Copyright Akiyoshi Kitaoka 2008 (June 26)
"Purple flowers"
Each flower appears to expand.
Copyright Akiyoshi Kitaoka 2008 (June 19)
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