Hi Pass and Low Pass Filters

[jfrancis]

Mr Angry & Mrs Calm

http://www.ianrowland.com/MiscPages/Mrangryandmrscalm.html

If you are near to this picture, Mr Angry is on the left and Mrs Calm is on the right. If you view it from a distance, they switch places.

Different frequencies seem to emerge at different scales.

[Elwell]

That's really, really cool.

[Idiot Apathy]

That's really really really cool.

[Chuck,mate.]

very nice.
also - if u`ll look at the images with your eyes squinted, the illusion
will take place too. no need to zoomout nor step back from the screen.
:)