Checker shadow illusion

Checker shadow illusion

The checker shadow illusion is an optical illusion published by Edward H. Adelson, Professor of Vision Science at MIT in 1995.[1] The image depicts a checkerboard with light and dark squares. The optical illusion is that the area of the image labelled A appears to be a darker color than the area of the image labelled B. However, they are actually exactly the same color.

This can be proven using the following methods:[2]

  • Opening the illusion in a image editing program and using the eyedropper tool to verify that the colors are the same
  • Isolating the squares. Without the surrounding context, the effect of the illusion is dispelled.
  • Using a photometer
Areas of the image A and B are the same color
A rectangle of the same color has been drawn connecting the two areas of the image

See also

References

  1. ^ Adelson, Edward H. (2005). "Checkershadow Illusion". http://web.mit.edu/persci/people/adelson/checkershadow_illusion.html. Retrieved 2007-04-21. 
  2. ^ http://web.mit.edu/persci/people/adelson/checker_more_evidence.html

External links


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