Lightness Perception and Lightness Illusions

interactive movies based on a paper by Edward H. Adelson

The following demonstrations are in Macromedia Flash formats, and therefore suitable for classroom teaching:  

To download: Mac users, press and hold mouse button. PC users, press right mouse button.
Click on the link to view.

Simultaneous Contrast Illusion [ Flash - (69 kb) ]	Vasarely Illusion [ Flash - (79 kb) ]
Craik-Obrien-Cornsweet Effect [ Flash - 102 kb) ]	Knill and Kersten's Illusion [ Flash - (86 kb) ]
The Koffka Ring [ Flash - (74 kb) ]	Impossible Steps [ Flash - (116 kb) ]
Corrugated Plaid [ Flash - (101 kb) ]	Haze Illusion [ Flash -  (142 kb) ]
White's Illusion [ Flash -  (106 kb)]	Criss-Cross Illusion [ Flash -  (75 kb) ]
The Snake Illusion [ Flash - (116 kb) ]

 

 

 

 

 

 

 

 

 

 

 

Questions and comments about this web site
can be directed to John-Elmer Canfield: canfield@mit.edu