Using Cellophane For 3D Displays On Your Laptop

prestidigital writes "From the abstract: [the authors] present a novel, inexpensive, stereoscopic technique for generating 3D displays from cellophane and a laptop computer screen. (Once again my physnews update sends me email that doesn't suck!)"

Comments

mirror

[tedtimmons]

My spidey sense tells me that server is about to die. Here's my mirror:

http://perljam.net/cache/individual.utoronto.ca/ii zuka/research/cellophane.htm

-ted

better with real polarizer sheets

[Anonymous Coward]

cellophane has a poor separation quality, i.e the difference between 90 degrees (blocked) and 0 degrees (pass) polarized light is little.

Real lab-quality polarizer crystals are way to expensive and generally too small for this application.

however, sheet polarizing material can be bought in photo equipment stores and cut to size with normal scissors. It's more expensive than cellophane but less expensive than lab polarizers and has a quality that is waaaaay better than cellophane. I paid about 15 bucks for 25*25 cm. about 8 years ago in Germany. Hama sold them at the time

Amazingly effective: Animated GIFs

[UsonianAutomatic]

The challenge for 3-D image display isn't blocking the "wrong" images from each eye, it's blocking the wrong images when they're displayed in the same space -- overlaid in a single frame.

This animated GIF technique showed up on Metafilter a couple of weeks ago, and for me it was one of those "Why the hell didn't anyone try this sooner" epiphanies for me. Yes, the constant jitter while flipping between frames gets old, but not nearly as old as straining your eyes with the 'cross-eye' viewing method.

I trust its more inventive than this...

[anubi]

The site's slashdotted.

So I didn't RTFA.

I'm assuming its similar to this .

I just hope the solution was more inventive than doing the old theatrical movie stunt about using relative shifting of color information and celluloid glasses - which gives you depth information at the expense of color information. Spy Kids 3D just did this using a blue or green image for the left eye and a red image for the right.. That one's been around since the 40's. In both movie and book. Cute trick but it gives me headaches to see it for any length of time.