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Colossal Holograms

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Re: Colossal Holograms

#51

Post by mhalle »

chmike wrote: post #48
mhalle wrote: post #39

Earlier quoted context omitted.

The looking Glass display is horizontal parallax only (HPO). HPO is a common information reduction method in the 3D display world. Most holographic stereograms, all rainbow holograms, and all 3D lenticulars are HPO. Occlusion, horizontal motion parallax and stereoscopic cues are preserved, which are our primary 3D cues. The loss of vertical parallax changes computation from an N squared to N problem. An interactive d…

Are the Looking Glass display real holograms with light interference patterns ? Or are they emitting different pixels in different view angles ?

No, they are not true holograms in the interference pattern sense. I am not fond of the misappropriation of the word, but Looking Glass is hardly the first.

I had hoped plenogram would catch on (to make the connection to the plenoptic function that describes the travel of light in a scene).

Re: Colossal Holograms

#52

Post by supermatt »

chmike wrote: post #48
mhalle wrote: post #39

Earlier quoted context omitted.

The looking Glass display is horizontal parallax only (HPO). HPO is a common information reduction method in the 3D display world. Most holographic stereograms, all rainbow holograms, and all 3D lenticulars are HPO. Occlusion, horizontal motion parallax and stereoscopic cues are preserved, which are our primary 3D cues. The loss of vertical parallax changes computation from an N squared to N problem. An interactive d…

Are the Looking Glass display real holograms with light interference patterns ? Or are they emitting different pixels in different view angles ?

https://en.wikipedia.org/wiki/Lenticular_lens

Re: Colossal Holograms

#53

Post by tgvaughan »

chmike wrote: post #48
mhalle wrote: post #39

Earlier quoted context omitted.

The looking Glass display is horizontal parallax only (HPO). HPO is a common information reduction method in the 3D display world. Most holographic stereograms, all rainbow holograms, and all 3D lenticulars are HPO. Occlusion, horizontal motion parallax and stereoscopic cues are preserved, which are our primary 3D cues. The loss of vertical parallax changes computation from an N squared to N problem. An interactive d…

Are the Looking Glass display real holograms with light interference patterns ? Or are they emitting different pixels in different view angles ?

Aren't those two things essentially identical, at least as far as the resulting wavefront goes?

Re: Colossal Holograms

#54

Post by setr »

maest wrote: post #18

The video game Prey2 features similar technology also called LookingGlass. It has a fairly prominent role in the story line. I wonder if the naming is a coincidence or a nod.

It's also the name of a game studio with a number of neat titles, some rock band, and perhaps most importantly, sequel to Alice in wonderland: Through the Looking-Glass, and What Alice Found There

All of which were probably referring to the same concept: viewing the other side of reality

Re: Colossal Holograms

#56

Post by woodrowbarlow »

olivierduval wrote: post #25

Do you know teh technical specs ? - horiz/vert max angle (to be able to walk around): the widest=the best - horiz/vert max angular resolution (to avoid the step effect while walking around): the finest=the best - of course, the usual suspects: refresh rate/resolution/number of colors/color accuracy/luminosity

gathered from the website and comments here:

horizontal: 40-50 degree viewing angle, with angular resolution of 45 steps. vertical is not paralax at all. recommended 1 - 30 ft viewing distance.

the 8k measurement is the total of all the display layers, so what you'll see is a fraction of 8k resolution. refresh rate: 60Hz.

i think all those measurements are true for all three display sizes manufactured by looking glass, except the smaller screens are 4k.

the blog also mentions "over a billion-count color gamut".

Re: Colossal Holograms

#57

Post by pluma »

tyingq wrote: post #37
pluma wrote: post #31

Earlier quoted context omitted.

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.

This looks like "coming out of the screen" to me: 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?

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".

Re: Colossal Holograms

#58

Post by djmips »

setr wrote: post #54
maest wrote: post #18

The video game Prey2 features similar technology also called LookingGlass. It has a fairly prominent role in the story line. I wonder if the naming is a coincidence or a nod.

It's also the name of a game studio with a number of neat titles, some rock band, and perhaps most importantly, sequel to Alice in wonderland: Through the Looking-Glass, and What Alice Found There All of which were probably referring to the same concept: viewing the other side of reality

Looking-glass was just a peculiar literary term for a mirror in the 1800s. A reflective glass you would look at.
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