5 ms·

Note that this "only" adds depth. It can't make anything appear to "come out of" the screen, the effect is more like a window. It's not like holograms in scienc

by pluma 7y ago

Note that this "only" adds depth. It can't make anything appear to "come out of" the screen, the effect is more like a window. It's not like holograms in science fiction. It's still pretty impressive tho.

tyingq 7y ago
This looks like "coming out of the screen" to me: https://miro.medium.com/max/1200/1*-nm0AvcydVzyhgDFdh6V2g.gif https://miro.medium.com/max/1200/1*-nm0AvcydVzyhgDFdh6V2g.gi... Do you mean the effect doesn't work with back to front motion? Like that pan can't start in the back and move forward?
- targonca 7y ago
  Parent meant that it can't obscure the environment. E.g. you can't put your finger behind the cover of the compass in your image.
- pluma 7y ago
  Too late for an edit but I was going by what was shown in the video, which very much didn't look it could do that. That said, that's still basically "3D but without glasses", not exactly the Holodeck "hard light" future tech many people think of when they hear "real hologram".
  - SamBam 7y ago
    Yes. Most people think of something like this image of princess Leia coming out from R2: https://edge.alluremedia.com.au/m/g/2017/01/star-wars-hologram.jpg https://edge.alluremedia.com.au/m/g/2017/01/star-wars-hologr... That requires 1. The imagine coming "out" of the screen such that you can even see the image at 90º to the projector 2. The image occluding the physical background. As far as I understand, such a thing is impossible as seen in the still above (i.e. from a single projector), but can be fakes by using stuff in the air to scatter the light, like this research project (1) or this not-great version that uses fog (2) (1) https://www.sciencemag.org/news/2018/01/princess-leia-holograms-one-step-closer-reality https://www.sciencemag.org/news/2018/01/princess-leia-hologr... (2) http://www.leiadisplay.com/ http://www.leiadisplay.com/
  - vilhelm_s 7y ago
    I mean, a real hologram (made using light interference) is also not Holodeck hard light.
    - te0006 7y ago
      Yes, but at least a real hologram creates an actual depth sensation as the eye's focus needs to adapt. This means 3d impression works even for people with reduced stereoscopic eyesight, and does not create headaches due to a mismatch of scene depth vs. physical display depth. Such holographic displays do exist, e.g. www.seereal.com (which BTW recently received an investment by Volkswagen).
ithkuil 7y ago
You can create the illusion of things sticking out of a screen and if the screen is big enough the illusion is easier to maintain. For a "low tech" example of such effects take a look at http://amasci.com/amateur/holohint.html http://amasci.com/amateur/holohint.html and related content.

by pluma 7y ago

tyingq 7y ago

This looks like "coming out of the screen" to me: https://miro.medium.com/max/1200/1*-nm0AvcydVzyhgDFdh6V2g.gif https://miro.medium.com/max/1200/1*-nm0AvcydVzyhgDFdh6V2g.gi... Do you mean the effect doesn't work with back to front motion? Like that pan can't start in the back and move forward?

targonca 7y ago
Parent meant that it can't obscure the environment. E.g. you can't put your finger behind the cover of the compass in your image.
pluma 7y ago
Too late for an edit but I was going by what was shown in the video, which very much didn't look it could do that. That said, that's still basically "3D but without glasses", not exactly the Holodeck "hard light" future tech many people think of when they hear "real hologram".
- SamBam 7y ago
  Yes. Most people think of something like this image of princess Leia coming out from R2: https://edge.alluremedia.com.au/m/g/2017/01/star-wars-hologram.jpg https://edge.alluremedia.com.au/m/g/2017/01/star-wars-hologr... That requires 1. The imagine coming "out" of the screen such that you can even see the image at 90º to the projector 2. The image occluding the physical background. As far as I understand, such a thing is impossible as seen in the still above (i.e. from a single projector), but can be fakes by using stuff in the air to scatter the light, like this research project (1) or this not-great version that uses fog (2) (1) https://www.sciencemag.org/news/2018/01/princess-leia-holograms-one-step-closer-reality https://www.sciencemag.org/news/2018/01/princess-leia-hologr... (2) http://www.leiadisplay.com/ http://www.leiadisplay.com/
- vilhelm_s 7y ago
  I mean, a real hologram (made using light interference) is also not Holodeck hard light.
  - te0006 7y ago
    Yes, but at least a real hologram creates an actual depth sensation as the eye's focus needs to adapt. This means 3d impression works even for people with reduced stereoscopic eyesight, and does not create headaches due to a mismatch of scene depth vs. physical display depth. Such holographic displays do exist, e.g. www.seereal.com (which BTW recently received an investment by Volkswagen).

ithkuil 7y ago

You can create the illusion of things sticking out of a screen and if the screen is big enough the illusion is easier to maintain. For a "low tech" example of such effects take a look at http://amasci.com/amateur/holohint.html http://amasci.com/amateur/holohint.html and related content.