Color illusion 14

Color illusion 14

Since April 14, 2011

"Kajita's Bergen grid illusion"

The upper-left image consists of red parts, but the light-red dots appear to be tinted bluish or to scintillate so. The real color of them is shown at the right side. The lower-right image consists of magenta (red-purple) parts, but the light-magenta dots appear to be tinted bluish or to scintillate so. The real color of them is shown at the left side.

Kajita sensei's page
(in Japanese)

"Kajita's Bergen grid illusion"

All white dots appear to be tinted reddish or to scintillate so.

"Illusory color crosses"

There appear to be illusory yellow, blue, cyan or magenta crosses (chromatic Vasarely illusion).

"Captured sun 2"

There appear to be an illusory blue or light-blue rings (chromatic Mach bands).

"Two bands in the chromatic Mach band illusion"

There appear to be bighter or darker blue rings of the chromatic Mach bands (around Ring A or around Ring B). This disk physically consists of the outer ring of black-to-blue gradation, the inner ring of blue-to-white gradation, and the central white disk.

"Chromatic Mach bands and chromatic Vasarely illusion using color-contrast-induced illusory color"

Slightly reddish diagonals are observed for both squares, though the color is actually the gray shown in the right. The upper square shows chromatic Mach bands while the lower one displays the chromatic Vasarely illusion. In addition, in the upper square, a Vasarely illusion with cyan color is faintly observed forming a shape of +.

The reversal of the upper image

A gray-scale version, including bright Mach bands (x shape) and dark Vasarely illusion (+ shape)

"Chromatic Vasarely illusion and expansion/contraction"

There appear to be chromatic diagonals in each square. The upper-left and lower-right squares appear to contract, while the rest appear to expand.

References for the Vasarely illusion

Jameson and Hurvich (1975, Leonardo, 8, 125-131, p.129)

Martinez-Conde S and Macknik SL (2001). Society for Neuroscience 31st Annual Meeting, San Diego, CA.

Troncoso, XG, Macknik SL, Martinez-Conde S (2005). Novel visual illusions related to Vasarely’s ‘nested squares’ show that corner salience varies with corner angle. Perception 34: 409-420.

"Pyramids and tunnels 2"

There appear illusory chromatic lines (Vasarely illusion). Moreover, the two image is identical, in which either pyramid or tunnel is visible. When pyramids are seen, the top appear to point for us and the axes appear to converge. On the other hand, when tunnels are visible, they appear to head for bright exits and the axes appear to diverge.

"Pyramids and tunnels 3"

"Pyramids and tunnels 4"

"Contracting tunnels"

There appear illusory bluish lines (Vasarely illusion). Moreover, the two image is identical but they appear to diverge. In addition, the entrances appear to contract.