Caught Inside A Bubble

– Mark Vergeer, Stuart Anstis and Rob van Lier :  “Caught Inside A Bubble”. University of Leuven, Belgium, Radboud University Nijmegen, The Netherlands, and UC San Diego, USA

In this illusion you can see colors that are not presented on the screen. An image of colored bull’s eyes is alternated with an image containing different sized greyscale bubbles. Although these bubbles are colorless, they will actually appear to be colored. These illusory colors are the afterimages of the bull’s eye colors. The intriguing thing is that the colors of the bubbles appear to be completely different, depending on the size of the bubble. Each bubble ‘captures’ the afterimage of the bull’s eye color that matches the size of the bubble. One colored image causes multiple, completely different afterimages.

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