Interesting Optical Illusion !

If you watch the above images from your seat in front of the computer,
Mr. Angry is on the left, and Mr(s). Calm is on the right.

Get up from your seat, and move back about eight feet. This is worth it.

They switch places!! I checked. It does.

I believe this illusion was created by Phillippe G. Schyns and Aude Oliva

of the Univ. of Glasgow .

This proves that we may not be seeing what's actually there, all the time!!

I do not know how they generated this fascinating image, and I believe no-one
else is able to generate anything similar in Photoshop. I know it has something
to do with "low-pass" and "high-pass" filters, but the details??


Source : http://cvcl.mit.edu/hybridimage.htm