The latest works 39
since May 1, 2009
"Obake-hime"
obake = ghost; hime = princess or girl
The whites of the eyes appear to be brighter than white, though they are the same white as the surround.
Copyright Akiyoshi Kitaoka 2009 (July 29)
"Hurry Border and the Goblet of Fire"
The left goblet is the same in color and texture as the right one, but the former appears to be reddish while the latter bluish.
Copyright Akiyoshi Kitaoka 2009 (July 18)
cf.
Anderson, B. L. and Winawer, J. (2005) Image segmentation and lightness perception. Nature, 434, 79-83.
"No binocular rivalry in the color constancy eye"
Try to fuse them binocularly. Then, the left eye shows binocular rivalry between orange and green, while the right eye does not. This observation is remarkable since the right eye is the same color as the left eye in each image.
Copyright Akiyoshi Kitaoka 2009 (June 29)
This phenomenon might suggest that color constancy should reflect a rather low-level visual process.
"Binocular rivalry in the color constancy eye"
Try to fuse them binocularly. Then, the right eye sometimes shows binocular rivalry between cyan and red, while the left eye does not. This observation is remarkable since the right eye is the same gray for each image.
Copyright Akiyoshi Kitaoka 2009 (June 29)
This phenomenon might also support the idea that color constancy should reflect a rather low-level visual process.
"Rotating vipers"
Disks appear to rotate.
Copyright Akiyoshi Kitaoka 2009 (June 27)
"Rotating metallic snakes"
Rings appear to rotate.
Copyright Akiyoshi Kitaoka 2009 (June 19)
Thanks to Jamos
Thanks to Sam
"Red Hering grid illusion"
Red Hering grid illusion is observed when seen at some distance.
Copyright Akiyoshi Kitaoka 2009 (June 13)
"Moving snakes with shadows"
Snakes appear to move horizontally.
Copyright Akiyoshi Kitaoka 2009 (June 7)
"Green and blue hearts"
There appear to be hearts of light green or light blue. Actually, they are identical (R=0, G=255, B=150). When fusing neighboring hearts binocularly, observers may see stereopsis of the heart shape and binocular rivalry between these two illusory colors*. Fused hearts may appear to move laterally; this appearance depends on vergence eye movement.
Copyright Akiyoshi Kitaoka 2009 (May 24)
* I do not see rivalry but stable fused color.
"Hearts"
There appear to be hearts of orange and pink. Actually, they are identical (R=255, G=255, B=104). When fusing neighboring hearts binocularly, observers may see stereopsis of the heart shape and binocular rivalry between these two illusory colors*. Fused hearts may appear to move laterally; this appearance depends on vergence eye movement.
Copyright Akiyoshi Kitaoka 2009 (May 24, June 6)
"Blue kinkaku"
The color of gold leaf appears to be gold, though the physical color is slightly bluish gray, actually.
Copyright Akiyoshi Kitaoka 2009 (May 1)
Original photo
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