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> 3D in space gestures in such a small area are way too inexact and subject to false recognition. Is this an inherent property of physics or just a limitation

by mason55 12y ago

> 3D in space gestures in such a small area are way too inexact and subject to false recognition. Is this an inherent property of physics or just a limitation of current technology? Considering the strides that have been made with stuff like Kinect I don't see why we couldn't improve our tech in this area. IMO the biggest roadblock isn't tech but the strides in HCI that need to be made.

gravity13 12y ago
Well, as far as I understand the technology, there's a projection of a 3-dimensional image emitted in very many directions. So what you see at 45 degrees (polar) angled to the screen would be different than at the normal (90 degrees). Then there's the azimuthal angle as well (you can walk around it if it were laying flat on a desk). Unless there's some other input indicating to the touchscreen at what angles your eyes are at, determining what you see, there seems to be no way to correlate touch/movement gestures with 3-dimensional surfaces. This said, I can still stipulate tremendous value in treating all gestures as acting from the perspective of the normal - you would have a 3d image under glass and every touch on the glass corresponds to a z-dimensional intersection with the holograph.
potatolicious 12y ago
> "Considering the strides that have been made with stuff like Kinect" And it still sucks. The problem with motion controls is that it's a solution looking for a problem. Why would I want to hold my left hand out below my hip at a 45 degree angle and hold for 5 seconds, when instead I can hit the "back" button on my controller, is a mystery. It's the same problem as voice recognition - good demoware, poor products. We don't speak to our computers because the lag in feedback and the accuracy, while having advanced leaps and bounds, is still strictly inferior to hitting a keyboard (virtual or otherwise). This is before we get into more fundamental usability problems like having to hold your arms out while interacting with devices. Minority Report should've featured Tom Cruise with gigantic arms, built up from years of holding his arms out in front of him all day just to do basic computing tasks.
- taschenbillard 12y ago
  > Minority Report should've featured Tom Cruise with gigantic arms, built up from years of holding his arms out in front of him all day just to do basic computing tasks. Gigantic arms like you get from holding your smartphone the whole day and using it? I would guess that it might be even better to work this way than sitting 8 hours in a chair using the keyboard of your computer or your smartphone.
  - pyre 12y ago
    Sure holding your arms out to type on a 'virtual' keyboard probably wouldn't give you gigantic arms, but most people would find waving your arms around to interface with holograms in the air tiring if they were doing it for 8 hours. I don't wave my arms around in the air when using a smartphone most of the time. :P Also, there are downsides to standing all day, just as there are to sitting.

by mason55 12y ago

gravity13 12y ago

Well, as far as I understand the technology, there's a projection of a 3-dimensional image emitted in very many directions. So what you see at 45 degrees (polar) angled to the screen would be different than at the normal (90 degrees). Then there's the azimuthal angle as well (you can walk around it if it were laying flat on a desk). Unless there's some other input indicating to the touchscreen at what angles your eyes are at, determining what you see, there seems to be no way to correlate touch/movement gestures with 3-dimensional surfaces. This said, I can still stipulate tremendous value in treating all gestures as acting from the perspective of the normal - you would have a 3d image under glass and every touch on the glass corresponds to a z-dimensional intersection with the holograph.

potatolicious 12y ago

> "Considering the strides that have been made with stuff like Kinect" And it still sucks. The problem with motion controls is that it's a solution looking for a problem. Why would I want to hold my left hand out below my hip at a 45 degree angle and hold for 5 seconds, when instead I can hit the "back" button on my controller, is a mystery. It's the same problem as voice recognition - good demoware, poor products. We don't speak to our computers because the lag in feedback and the accuracy, while having advanced leaps and bounds, is still strictly inferior to hitting a keyboard (virtual or otherwise). This is before we get into more fundamental usability problems like having to hold your arms out while interacting with devices. Minority Report should've featured Tom Cruise with gigantic arms, built up from years of holding his arms out in front of him all day just to do basic computing tasks.

taschenbillard 12y ago
> Minority Report should've featured Tom Cruise with gigantic arms, built up from years of holding his arms out in front of him all day just to do basic computing tasks. Gigantic arms like you get from holding your smartphone the whole day and using it? I would guess that it might be even better to work this way than sitting 8 hours in a chair using the keyboard of your computer or your smartphone.
- pyre 12y ago
  Sure holding your arms out to type on a 'virtual' keyboard probably wouldn't give you gigantic arms, but most people would find waving your arms around to interface with holograms in the air tiring if they were doing it for 8 hours. I don't wave my arms around in the air when using a smartphone most of the time. :P Also, there are downsides to standing all day, just as there are to sitting.