Illusion of lightness #2
since April 25, 2005
"Robot"
The left circle appears to be lighter than the right one, though they are identical in luminance.
Copyright Aiyoshi Kitaoka 2005 (December 10)
"Brightness contrast with anomalous motion illusion"
It appears as if there were two different brightness or color among the smaller squares, but they are identical. The middle row appears to move rightward.
Copyright Aiyoshi Kitaoka 2005 (September 16)
"Fluorescent lumps"
The image appears to glare.
Copyright Aiyoshi Kitaoka 2005 (September 16)
"Ring of simultaneous brightness contrast"
The inner small squares appear to be darker than the outer ones, but they are the same in luminance gradient.
Copyright Aiyoshi Kitaoka 2005 (August 15)
If this configuration is already known, please let me know.
"Adelson's checker-shadow illusion-like gradation lightness illusion"
Physically, C = D !
Copyright Aiyoshi Kitaoka 2005 (August 12)
If this configuration is already known, please let me know.
"Lightness and darkness"
Each of lightness and darkness appears to expand slowly.
Copyright Aiyoshi Kitaoka 2005 (August 12)
"Gold disks"
Each gap surrounded by four disks appears to be darker oe lighter.
Copyright Aiyoshi Kitaoka 2005 (June 7)
"The new Mach bands"
The gray behind the red dot appears to be lighter than the gray behind the blue dot, though the former is physically darker than the latter.
Copyright Aiyoshi Kitaoka 2005 (June 3)
"Enhanced brightness contrast"
<Copyright free because this image should be a fundamental figure>
It appears that a = d or b = c in brightness, but actually b = d.
by Akiyoshi.Kitaoka 2005 (April 25)
This is not simply brightness contrast because removal of flanks reduces the effect (see the lower panel).
Stimulated by Piers' latest paper1)
1) Howe, P. D. L. (2005) White's effect: Removing the junctions but preserving the strength of the illusion. Perception, 34, 557 - 564.
If you find any images resembling my image in previous literature, please let me know. I will soon correct the description. Thank you.
"Hi-Vision"
The inset square in the left is the same in lightness as that in the right, but the former appears to be darker.
Copyright Aiyoshi Kitaoka 2005 (May 26)
"Takegaki"
White circles appear or disappear in black circles.
Copyright Akiyoshi.Kitaoka 2005 (April 25)
Takegaki is a bamboo fence, which e.g. surrounds a garden.
"The white circle"
A white circle appears at the cross observers see in the central vision.
Copyright Akiyoshi.Kitaoka 2005 (April 25)
"Light of Sweden"
Blue light appears to scintillate in white circles.
Copyright Akiyoshi.Kitaoka 2005 (April 25)
I have never been to Sweden...
