Was the Tupac performace really a hologram or some other kind of 3d screen?

[yoda313]

Ok I can't believe this hasn't been brought up here yet but I'll bite:

Was that Tupac performance really what we would consider a hologram or was it something that needed 3d glasses?

I did see a post of it online and it didn't look blurry or anything so I guess glasses weren't involved.

Obviously this isn't star trek holodeck stuff so you can't touch it or anything. But are we talking believable 3d in the real world? I mean are we actually at the point something could be shown without glasses that would seem to be in the real world?

Whats the tech behind it? How many projectors are used? Whats the limitation? Is this just one image at a time?

Is this actually like the Princess Leia hologram scene from the Star Wars A New Hope? Yes of course I know that was optical effects but that and the star trek holodeck are what most of us think of when we hear the word hologram.

Anybody have links for the actual tech behind this? So far a brief net search just has the presentation nothing about the actual science behind it.

And please lets not devolve into some discussion about the merits or lack there-of about rap music. I don't want to discuss the performance or the musician. I just want to talk about the tech behind the presenation.

Thanks.

Edit - ok found some links finally:

http://www.newscientist.com/blogs/onepercent/2012/04/rapper-tupac-rises-from-the-de.ht...ef=online-news

http://www.newscientist.com/blogs/onepercent/2012/04/rapper-tupac-rises-from-the-de.ht...ef=online-news

http://en.wikipedia.org/wiki/Pepper%27s_ghost

Cool stuff. Still looking into it.

Edit - one more:

http://www.musion.co.uk/

[nic2k4]

Meet Hatsune Miku; here's a good write-up about her and this link about the tech, from the article.

[jagabo]

Old (150 years) hat. Boring.

[yoda313]

@nic2k4 - thanks for the links!

That is freaky - a "live" anime character.

I like the articles.

@jagabo - maybe but I had never heard of it or forgot about it.

[nic2k4]

The crowd reflection is a dead give away for the glass screen in front of the stage, but it's still really cool.

... a "live" anime character.

Actually there's a whole slew of them:

Megurine Luka (duet with Miku)

Kagamine Rin & Len

Lily (duet with Miku)

There are a couple more, but their names escape me right now.