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That and the whole "how do you make stuff opaque". All the demo show semi-transparent object being added to the real world. Making text legible when you can't f

by IMTDb 9y ago

That and the whole "how do you make stuff opaque". All the demo show semi-transparent object being added to the real world. Making text legible when you can't fully control the background on which it is display is very hard. My best guess is that if they don't advertise that use-case it is because they don't really feel ready to be judged on it.

adventured 9y ago
Don't you control that by doing text recognition and always placing a frame behind? Let the user customize the color schemes in question (bright white + black text, or off white + off black etc). If the background is a blue wall in your living room, you place a white framing layer behind the text you're looking at. If the real wall is black, you do the same thing. Makes no difference what color the wall is then. Wall -> Frame Layer -> Text Text recognition should be among their easiest chores (which is to say it's still not easy, it's on the lower level of difficulty in what they're trying to do).
- wlesieutre 9y ago
  The issue is that if you have a transparent display for AR, light from the background goes through it. There's no way to just "put a white framing layer behind it" because the light the display puts out is being added on top of whatever light is coming through from behind it. This is what happens with Microsoft's HoloLens headsets. Magic Leap is claiming to have occlusion of background objects working, but hasn't really explained the mechanism. It sounds like it's some sort of "light field" trickery where they let the light through, but your brain knows there's a virtual object in front of it and mentally processes it out. Cool if it works, but I'll need to see this to believe it.
wlesieutre 9y ago
Magic Leap claims to be able to occlude real-world objects with their AR, not just semi-transparent "hologram" overlays. This is something I'd want to see for myself, but here's what Brian Crecente at Rolling Stone wrote about it: > Miller wanted to show me one other neat trick. He walked to the far end of the large room and asked me to launch Gimble. The robot obediently appeared in the distance, floating next to Miller. Miller then walked into the same space as the robot and promptly disappeared. Well, mostly disappeared, I could still see his legs jutting out from the bottom of the robot. > My first reaction was, “Of course that’s what happens.” But then I realized I was seeing a fictional thing created by Magic Leap technology completely obscure a real-world human being. My eyes were seeing two things existing in the same place and had decided that the creation, not the engineer, was the real thing and simply ignored Miller, at least that’s how Abovitz later explained it to me. If they really have that working, it's a huge advantage over systems like HoloLens. https://www.rollingstone.com/glixel/features/lightwear-introducing-magic-leaps-mixed-reality-goggles-w514479 https://www.rollingstone.com/glixel/features/lightwear-intro...
- jackhack 9y ago
  >>able to occlude real-world objects Here's an application for drivers and pilots: smart sun-shade to block out bright lights (headlights), sunlight, or glints off surfaces (water).
  - wlesieutre 9y ago
    Based on Magic Leap's explanation, I'm not so sure it would work for that. > My eyes were seeing two things existing in the same place and had decided that the creation, not the engineer, was the real thing and simply ignored Miller, at least that’s how Abovitz later explained it to me. That sounds to me like some kind of light-field trickery where it puts an object in front of the background using the light field, but doesn't physically block the light. Instead, your brain processes it out because your visual model of the space has something in front of it. I'm imagining this works sort of like the effect where you overlay left and right eye images that don't match, your brain sort of fades between the two of them because it can't decide what's there? Except instead of having that disagreement, both of your eyes say "This thing is in front" and that's how you see it"? It's hard to say from the kind of hand-wavey explanation. If that's the case, I don't know that it would work for really bright glare. Either it might be a strong enough signal to overpower the light field, or the bright light scattering around your eyeball might still cause enough bloom to wash out your vision.
    - excalibur 9y ago
      Furthermore, even if the technology DID somehow manage to trick your brain into not acknowledging the glare, the bright light would still be entering your eyes and causing damage to your retinas. It would be similar to the case of somebody who has nerve damage and doesn't feel pain, so they don't know that their hand is resting on a hot stove until they smell burning flesh.
      - oceanswave 9y ago
        If only we had technology that, when subjected to an electrical field, turned glass from opaque to translucent and were produced in sufficient quantities for applications such as airplane and building windows as to make this technology relatively inexpensive.
spyder 9y ago
Probably I'm missing something but I don't see this as a hard problem to solve because LCDs work by controlling the transparency of a pixel to let trough more or less background light and OLEDs don't need the background light to emit color so combining both you can have controlled transparency behind the color emitting pixels.

by IMTDb 9y ago

adventured 9y ago

Don't you control that by doing text recognition and always placing a frame behind? Let the user customize the color schemes in question (bright white + black text, or off white + off black etc). If the background is a blue wall in your living room, you place a white framing layer behind the text you're looking at. If the real wall is black, you do the same thing. Makes no difference what color the wall is then. Wall -> Frame Layer -> Text Text recognition should be among their easiest chores (which is to say it's still not easy, it's on the lower level of difficulty in what they're trying to do).

wlesieutre 9y ago
The issue is that if you have a transparent display for AR, light from the background goes through it. There's no way to just "put a white framing layer behind it" because the light the display puts out is being added on top of whatever light is coming through from behind it. This is what happens with Microsoft's HoloLens headsets. Magic Leap is claiming to have occlusion of background objects working, but hasn't really explained the mechanism. It sounds like it's some sort of "light field" trickery where they let the light through, but your brain knows there's a virtual object in front of it and mentally processes it out. Cool if it works, but I'll need to see this to believe it.

wlesieutre 9y ago

Magic Leap claims to be able to occlude real-world objects with their AR, not just semi-transparent "hologram" overlays. This is something I'd want to see for myself, but here's what Brian Crecente at Rolling Stone wrote about it: > Miller wanted to show me one other neat trick. He walked to the far end of the large room and asked me to launch Gimble. The robot obediently appeared in the distance, floating next to Miller. Miller then walked into the same space as the robot and promptly disappeared. Well, mostly disappeared, I could still see his legs jutting out from the bottom of the robot. > My first reaction was, “Of course that’s what happens.” But then I realized I was seeing a fictional thing created by Magic Leap technology completely obscure a real-world human being. My eyes were seeing two things existing in the same place and had decided that the creation, not the engineer, was the real thing and simply ignored Miller, at least that’s how Abovitz later explained it to me. If they really have that working, it's a huge advantage over systems like HoloLens. https://www.rollingstone.com/glixel/features/lightwear-introducing-magic-leaps-mixed-reality-goggles-w514479 https://www.rollingstone.com/glixel/features/lightwear-intro...

jackhack 9y ago
>>able to occlude real-world objects Here's an application for drivers and pilots: smart sun-shade to block out bright lights (headlights), sunlight, or glints off surfaces (water).
- wlesieutre 9y ago
  Based on Magic Leap's explanation, I'm not so sure it would work for that. > My eyes were seeing two things existing in the same place and had decided that the creation, not the engineer, was the real thing and simply ignored Miller, at least that’s how Abovitz later explained it to me. That sounds to me like some kind of light-field trickery where it puts an object in front of the background using the light field, but doesn't physically block the light. Instead, your brain processes it out because your visual model of the space has something in front of it. I'm imagining this works sort of like the effect where you overlay left and right eye images that don't match, your brain sort of fades between the two of them because it can't decide what's there? Except instead of having that disagreement, both of your eyes say "This thing is in front" and that's how you see it"? It's hard to say from the kind of hand-wavey explanation. If that's the case, I don't know that it would work for really bright glare. Either it might be a strong enough signal to overpower the light field, or the bright light scattering around your eyeball might still cause enough bloom to wash out your vision.
  - excalibur 9y ago
    Furthermore, even if the technology DID somehow manage to trick your brain into not acknowledging the glare, the bright light would still be entering your eyes and causing damage to your retinas. It would be similar to the case of somebody who has nerve damage and doesn't feel pain, so they don't know that their hand is resting on a hot stove until they smell burning flesh.
    - oceanswave 9y ago
      If only we had technology that, when subjected to an electrical field, turned glass from opaque to translucent and were produced in sufficient quantities for applications such as airplane and building windows as to make this technology relatively inexpensive.

spyder 9y ago

Probably I'm missing something but I don't see this as a hard problem to solve because LCDs work by controlling the transparency of a pixel to let trough more or less background light and OLEDs don't need the background light to emit color so combining both you can have controlled transparency behind the color emitting pixels.