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[tech] 3-D Projectors
 

offline Zephyr Twin from ΔΔΔ on 2009-11-15 20:07 [#02344568]
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I thought these were pretty amazing. It would be
fun to play around with them, I think.


 

offline larn from PLANET E (United Kingdom) on 2009-11-15 22:33 [#02344584]
Points: 5473 Status: Regular | Followup to Zephyr Twin: #02344568 | Show recordbag



that's perhaps the coolest thing i have ever seen


 

offline larn from PLANET E (United Kingdom) on 2009-11-15 22:34 [#02344585]
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in terms of video grapics


 

offline misantroll from Switzerland on 2009-11-16 01:28 [#02344591]
Points: 2151 Status: Lurker



amazing


 

offline Terence Hill from Germany on 2009-11-16 04:35 [#02344603]
Points: 2070 Status: Lurker



this is not 3d projection anyway. it's called projection
mapping, which is cool, but not 3d - it's done with ordinary
projectors. some software maps (i.e. perspectively distorts)
video content so that it appears correct on surfaces not
perpendicular to the lens. that's all.


 

offline Terence Hill from Germany on 2009-11-16 04:39 [#02344604]
Points: 2070 Status: Lurker



LAZY_MAPPING


 

offline Indeksical from Phobiazero Damage Control (United Kingdom) on 2009-11-16 06:37 [#02344614]
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I see dis afore but it still blow ma mynd.


 

offline Zephyr Twin from ΔΔΔ on 2009-11-16 08:04 [#02344627]
Points: 16982 Status: Regular | Followup to Terence Hill: #02344603 | Show recordbag



Well, it's not 3d in the sense that a hologram is 3d, but
"3d graphics" on computers aren't true 3d either, you're
still viewing them through a 2d lens, IE the monitor. So,
yes, this could be called 3d projection, if only to
distinguish it from regular flat-wall projectors.


 

offline nightex from Šiauliai (Lithuania) on 2009-11-16 09:43 [#02344632]
Points: 1275 Status: Lurker



I imagine beam of such projector must be pointed exacly at
object, and precise distance to match object, also you have
to calculate shadow geometry and object lightening.
Intrestin is it so realistic looking from different angle?


 

offline Zephyr Twin from ΔΔΔ on 2009-11-16 19:21 [#02344815]
Points: 16982 Status: Regular | Followup to : #02344814 | Show recordbag



Fair enough, I see where you're coming from. But what would
you call the effect where the projectors display a glowing
orb in front of the columns, and then move it behind the
columns, and finally into the building itself creating an
effective 3-dimensional illusion? As I said, no form of "3d"
that humans have thus far created is actually 3d. When you
go see a new movie in "3d" you're still looking at a
2-dimensional screen. That's all I'm saying. Maybe they
should be called "2.5-D standard projector arrays" or
something.


 

offline Zephyr Twin from ΔΔΔ on 2009-11-16 19:41 [#02344820]
Points: 16982 Status: Regular | Followup to : #02344818 | Show recordbag



That's nice but you didn't answer my question.


 

offline Terence Hill from Germany on 2009-11-16 19:43 [#02344821]
Points: 2070 Status: Lurker



i haven't seen this technique in meat space, but judging
from videos it seems there is just one optimal viewing
angle. with that orb for example, if you stand at say a 30
degree angle to the wall, it will distort and you'll see an
ellipse, a flat projection on a flat wall. That said, i
think it's still nice stuff especially with many projectors
that are synced well etc...

personally i like installations that are done with LEDs..
projectors are so weak against ambient light LAZY_TITLE


 

offline Zephyr Twin from ΔΔΔ on 2009-11-16 20:18 [#02344828]
Points: 16982 Status: Regular | Followup to : #02344822 | Show recordbag



That would be true if the image didn't move at all. There's
clearly a 3-dimensional illusion of depth created by
the moving orb. I get that it's not truly 3d but I'm just
talking about enjoying the effect at face value, and to the
layperson it could be described as "3d".


 

offline Zephyr Twin from ΔΔΔ on 2009-11-16 20:24 [#02344829]
Points: 16982 Status: Regular | Followup to Terence Hill: #02344821 | Show recordbag



That LED bottle wall is neat, thanks for the link.


 

offline Zephyr Twin from ΔΔΔ on 2009-11-16 20:43 [#02344835]
Points: 16982 Status: Regular | Followup to : #02344831 | Show recordbag



Yeah, it's a bit annoying that it's mis-labled as "3d" when
it's just a neat trick. Still fun to watch, though. :]


 

offline larn from PLANET E (United Kingdom) on 2009-11-16 23:51 [#02344844]
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I don't care.. it's 3D!, i believe it's real ok? it's not
even a projection


 

offline Chodi from 1337V1773 on 2009-11-17 03:07 [#02344857]
Points: 999 Status: Addict



They should do that on the twin towers making them fall
down.
oh wait... :D


 

offline nightex from Šiauliai (Lithuania) on 2009-11-17 07:52 [#02344902]
Points: 1275 Status: Lurker | Followup to larn: #02344844



So maybe it should be called 3D illusion projector, because
it is not 3D.

larn if you could look at different angle to this
projection, you clearly could see imperfections of 3D, so it
is 3D illusion.

3D halographic imiges is very different technology, it is
far more complicated, than 2D projector images fited to
buildings and walls.


 

offline larn from PLANET E (United Kingdom) on 2009-11-17 09:24 [#02344920]
Points: 5473 Status: Regular | Followup to nightex: #02344902 | Show recordbag



sorry, i know i am just being silly :P


 

offline nightex from Šiauliai (Lithuania) on 2009-11-17 09:54 [#02344924]
Points: 1275 Status: Lurker | Followup to larn: #02344920



no it is not silly, just maybe you just understand things
differently...


 

offline Pope Benedict from Vatican City (Italy) on 2009-11-17 10:25 [#02344929]
Points: 101 Status: Lurker



nice


 


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