Authors:
Kazuhisa Yanaka
and
Sota Mihara
Affiliation:
Kanagawa Institute of Technology, 1030 Shimo-ogino, Atsugi-shi, Japan
Keyword(s):
Optical Illusion, Motion Illusion, Animation, Visual Psychology.
Abstract:
A new illusion has been discovered, wherein line segments, when alternately displayed with their tonal inversion or monochromatic images for approximately 120 ms each on a monochromatic background, seem to grow or shrink continuously. For instance, if the first image features black line segments on a white background and the second image shows the inverse brightness, switching between these two images causes the line segments to give the illusion of continuous expansion. Although a single line segment suffices, aligning multiple line segments parallel to each other enhances the effect of this illusion. This illusion can be achieved using achromatic colors, such as black and white, as well as chromatic colors, such as red, blue, and green. Specifically, when using an image with a black line segment on a red background alongside its brightness-inverted counterpart, the line segments appear to steadily decrease in length. Our hypothesis suggests a comparison between the mechanisms of th
is illusion and the changes in water volume in a pond.
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