What are the possible applications of holographic imaging?
Yes, they do.They are mostly existing in university labs.There are some notible ones, including US MIT Media Labs, Singapore A*STAR, Japan Tokyo University of Agriculture and Technology, China Zhejiang Universitym and UK University of Cambridge (there are few others, I just name some). If you are interested, you can find their academia papers talking about their holographic display system(s).All those holographic displays in these labs have at least one drawback of following:1) Lack of at least one 3D cue, a.k.a it projects fake 3D. 2) Too small size (<50mm) and/or too small viewing angle (<5 degs).3) Too expensive (cost of each prototype is more than USD 30k).4) Poor quality (I mean compared to the standard of existing 2D display).5) Very bulking system size (projected image volumn: system size volumn < 1:10) .There are few companies trying to build up commercialized holographic displays, such as US Zebra Imaging and Israeli Real View Imaging. Unfortunately, what they actually project are not true holographic images, but 3D images synthesized by multiple 2D images (a.k.a fake 3D). Well, but if done well (apparently they haven't done to this level), an user probably cannot tell the difference. Btw, cost of their system is high, and still in the prototype stage.In short, they do exist, but there is still a long long way to go before it goes to the market. Some even predict it will never happen, because some alternative approach(es) may become main stream (like VR/AR) and then there is no (or very little) need for them.Hope this answer your question.
What's the best way to present an animation on stage?
“Hologram” type stage illusions are actually just modern presentations of the Pepper's ghost illusion used in theaters since the 1860s. This is extremely simple in theory but quite hard to do in practice with full-size performers in a live stage show.This effect uses a large piece of glass or plastic film that goes across the stage at an angle of about 45 degrees. The audience can see through the glass to see real objects on stage behind it and, thanks to reflections, they can also see additional content that comes from either a bright screen or a projector above or below the stage. Done well with life-size images this effect can be very impressive, but to do it on an entire stage requires a very large plastic film, bright projector and complete control of the lighting in the room.A much more practical solution would be to construct a smaller version in a cardboard box. Prepare a large box with a hole on one side where the audience looks in, a large tablet on the bottom or the top to make the ghost image and a piece of glass or clear plastic at 45 degrees over the tablet. Behind the glass build a miniature set of real 3D objects and provide some light over these, possibly with LED flashlights. Paint the inside all black. This is still quite tricky to operate and will need some work at home, but is much easier than trying to do a full size stage illusion.To explain away the small size of your mini theater you can invent some story about having caught some tiny Elven people in the forest and trained them to sing.
How can I create a 7D hologram?
Good Day Sited Sepra. Obviously you possess some advance knowledge on the subject of “7D Holograms”, due to the fact that you are aware that they even exist. The term “7D” is somewhat misleading, as what it really being manipulated are “7 parameters”. For viewers NOT familiar with this technology, I’ve “copied & pasted” the following brief interpretation.What is a 7D Hologram?posted by John Spacey, December 24, 2016 updated on January 12, 2017A 7D hologram is a method for capturing a high quality hologram using 7 parameters.7 DimensionsThe universe exists in 3D space with time often considered a fourth dimension. The reason that a 7D hologram has so many dimensions is that the hologram is captured from a large number of positions that surround the scene or subject of the hologram.Each position is described in 3D space. Each position captures a variety of viewing directions in 2D space. Two additional parameters are captured for each direction: image intensity and time. If you add these up you get 7 parameters, known as dimensions.AnalogyA 7D hologram is like having a bunch of photographers surrounding a subject. The position of each photographer is described in 3D. The angle each photographer is pointing the camera is described in 2D. Each camera records light properties and time. The resulting parameters are: 3D position + 2D angle + time + light properties = 7D.Technical TermThe five dimensions that describe position and angle are known as a 5D Plenoptic Function.Current StateCurrently, holograms based on 5D plenoptic functions are prohibitively large.YouTube have a variety of videos on creating your own 7D Hologram at the following links:https://www.youtube.com/watch?v=... https://www.youtube.com/watch?v=... Thanks for your time & interest.
Which sight is better, Red Dot, Holographic, or Reflex (Rainbow Six Siege)?
Entirely personal preference.My preference has changed a few times during the two years of Siege. At the moment I'm really keen on reflex, I like the limited profile it has on the screen and the rapid acquisition is good for me as I've recently changed roles in my tournament team from supporting to fragger. So I've swapped it out for everyone and my ratio has improved considerably. Especially with my consistent main, Twitch, who I previously had a 2.6 k/d with and it's jumped to 2.8 on upwards of over 2,000 kills total.There is arguments for ACOG scopes, but I'm on the fence about them. I think they have their place, but with the change in aggression on the attacking side I've died so damn often from doorways I can't see because the scope rim is blocking it.I feel entirely confident using it on Rook and Doc, they hold angles excellenty and they are optimal with ACOG scopes.I've drifted well away from red dots and holos, there is some argument to make for the increased size of them, but personally, my preference has become reflex (on all but a few weapons) and it just works best for me.Bar the legitimate argument on range, there's really nothing else to pro/con beyond which works best for you.
What is the difference between 4 dimension, 5D, 6D, and 7D movies?
Absolutely nothing. And it definitely has nothing to do with the dimensions we speak of in Physics.4D cinema incorporates physical motion of things around you and the seat you are sitting on(seat effect simulation), along with a 3D movie. It is often believed that 5D cinema is one step above 4D- using motion as well as other sensory experiences like smoke effects, water droplets etc. But it's false.There is no industry standard for such marketing concepts. The number of the D is often raised as a ploy to attract more customers. But essentially, they all mean the same.
How do I make a life sized Vocaloid Hologram with Mosquito Netting?
If you have a digital projector and a laptop or something to connect it to, then the hardest part is building the frame that you attach the mosquito netting to. In this video it looks the person made it out of PVC plumbing pipes, which is a popular way of building stuff like this because you can buy all kinds of standard shapes and joints and they just fit together however you want. There a lots of videos on youtube that explain how to make large frames like this. Search youtube for things like "DIY green screen stand" - of course you will be using mosquito netting instead of green fabric, but the idea for the frame is the same. Once you have a frame and some mosquito netting, you stretch the netting across the frame using clips or tape. Then you set up your projector and laptop following the instructions for the projector. Then search youtube for "hatsune miku hologram ready" and you will find lots of videos people have made for doing exactly this. When you are done, you will have a life-size projection of Miku, which you will immediately realise doesn't look as good as you thought - because your depth perception allows you to see that it is just a flat image projected on a screen. You will be probably be disappointed, because the effect is not very convincing, unless you close one eye and stand very still. Of course the above video looks convincing because it's not a 3D video. Cameras only have one lens and no depth perception. The Miku concerts also look convincing in real life because people are far enough way from the stage that their depth perception can't see the difference. But if you are standing in the same room as Miku like the above, the effect doesn't work that well. It's a bumber - I know.