I was just watching a show that was using this new (relatively) Musion eyeliner projection film to create a holographic image. It was using a normal projector mounted on the ceiling that was aimed at a mirror on the floor. This directed the light towards the projection film which is mounted at 45 degrees- much like a video pointer system. the effect was being able to beam a virtual image of a person in effective 3 dimensions....pretty cool anyway!

Was just wondering if anyone else had seen this new form of projection? or if it would be possible to create a diy form of holographic image?

I read about that in blender. The Gorillaz played live and in full 3d holographs with Madonna. Also toyota used it to launch their new vehicle, at there showing event. check it out:

I saw this on Wolf Blitzer during the presidential election. They beamed in reporters from various states. Must look cool in person but i think the effect was lost through the tv.

Absolutely not, no similarity between the technologies. CNN's effect simply greenscreened-in correspondents with moving camera angles. In realspace there was nothing seen.

The musion eyeliner system is a version of an old theatre trick called "Peppers Ghost" after the character in the play in which it was originally used.

There is a lot of misconception about Eyeliner, because aside from the image appearing near other, real, performers and 3-d objects, the video itself is still a flat image, with absolutely no depth. The reason the eyes are fooled is that the whole system is contained in a box of truss which limits your viewing angle. That is to say, look at it straight on and it works; look from a 30-degreen side angle and it would look like a flat image rotated.

dANtRONIC

WOW this is amazing!

I've seen an open-air, 360 degree, table-top hologram. When I was in the service, back in '91, they had a western gunslinger video game at the PX (Fort Gordon, GA - Signal School). No scan lines, glasses, or narrow field of view. It was setup like a table-style with a plexi top and a round silvery bowl below the surface. From what I've learned since then, the system used an anamorphic projector on a rapidly vibrating mirror (the bowl), to change the focal length of the projected moving image. They used to do that by using a mylar reflector stretched over a drum with a vacuum, and then quickly vary the pressure of the vacuum.

I saw where a guy had rigged up his own projector system in his garage from some junk he had laying around. He used a projector to bounce a video off a mirror fastened to the piston of a shot gas mower engine, and that reflected off a tilted piece of glass above the engine block. He spun the crank with an electric motor, and used the distributor rotor to know the position of the mirror on the piston. He had the projector hooked up to a microcontroller, or a Commodore 64, I think. He started with a pov type projector (leds turned on according to a position sensor, creating a picture through persistance of vision), and it let him create a 3-d grid pattern to start with.

I hope that helps!

rallen

I remember that game! If i remember correctly it was made by Sega (quick Google search revealed "Time Traveler" Sega, 1991, Laserdisc based) It was also in an arcade in Greenville SC, if you looked at if from directly above the effect was lost - and headache inducing because it was stereoscopic. The cabinet was also designed so that you really only looked at it from Ideal angles.
Also it it used prerecorded live video, worked like a live action 3D Dragons Lair, but cowboy shoot-em up.

That's the one! You're the first person I've "talked" to that knew anything about it!

There was an article in Ciarcia's Circuit Cellar long ago about "computational holograms", he gave the source code for a small BASIC prog to take a 3D definition file, give it the laser frequency you'd be using, and it would generate the interference pattern for the hologram. You had to take a screenshot with a camera, and use the developed negative as the holographic film. You could supposedly create damn near any 3D graphic you liked that way, but the computer resources at the time weren't up to the task of real-time. A cluster setup in a pipelined grid configuration might be up to the task though.

Here's a link to MIT's work in the field:
http://alumni.media.mit.edu/~lucente/pubs/siggraph95.html