Image:Checkershadow proof4full.jpg
From MMVLWiki
Proof for checker board shadow illusion by Edward H. Adelson (http://web.mit.edu/persci/people/adelson/index.html).
| This image is licensed under the Creative Commons (http://creativecommons.org/) Attribution-NoDerivs 2.0: http://creativecommons.org/licenses/by-nd/2.0/ |