the stereo effect

The project I am currently working on uses stereo projection to make the animation a bit more funky. You know, like in Beowulf or Ice Age 3.
Here are two screenshots showing you how that works:



The first image shows two almost identical images side by side. One is rendered for the left eye, the other one for the right. They are placed so that each spans exactly one full screen, and we send them to two projectors that are projecting on the same screen.
The projectors have polarization filters on them, polarizing the light from the upper projector vertically and the one from the lower projector horizontally.
The surface we project on, a silver-coated canvas, keeps the light's polarization, and if you wear glasses that have similar filters in front of each eye, we can send individual images to your eyes.

The same can be done by splitting the channels in red and blue and using red and blue filters before our eyes to trick our brain:



If you have a pair of red/blue glasses, you will see a monochrome, but seemingly 3dimensional picture composited from the one posted above.