>There is also some problems with spherical aberration if they try to make the image too wide and...
Not to mention a problem with whiplash "if they try to make the image too wide." Not a joke. People move their heads a lot when viewing large desk-top monitors. If you view a wide screen you automatically move your head to view things on the extreme right or left. If the image moves with your head... chain reaction and... snap!
Of course, as Thad Starner points out, this is why HIT's body-stabilized-spatial-information-display research project is so important to the future of wearable computing (where monitor resolution isn't so important):
>Can anyone think of a legitimate reason for choosing retinal scanning lasers over mini LCDs?
Retinal scanning lasers minimize the eyestrain associated with viewing a head-mounted-display 14-hours a day. This is critical for wearable-computer applications. None of the mini-LCDs pass this test.
>Some of you may remember those retinal scanning LED HMDs from as far back as 1990.
The LED HMDs from 1990 were made by ReflectionTech aka Reflection Technology. The product was called the P4. It was not retinal scanning. It was an excellent product -- by far the best head-mounted-display technology yet mass produced -- but not anywhere near the quality of VRDs.
Don't bother looking for the product -- you won't find it. ReflectionTech sold the patent recently to a company in Japan. If it's ever produced again you'll know about it.
Transmitting w/o waves means transmitting on all frequencies at once. This is a square wave, but when they say "not a wave" they mean *not a sine wave*. To understand a little better how this works, take a sine wave and add the sine wave of its first harmonic to it. then add the sine wave of the second harmonic to those two. Keep doing this and you start to notice your waveform getting squarer and squarer. Do it infinitely and your waveform becomes perfectly square.
>>>>>There are two competing approaches, one that is basically a morph, and the other with the multiple cameras. The Matrix used the multiple camera approach.The text of the *Bullet Time Walk Through* area of the Matrix site says the film used a technique combining both approaches listed above.
From the site: "A series of sophisticated still cameras was placed along the mapped path, each of which would shoot a single still photo. Then the photos were scanned into the computer, which created a strip of still images, similar to animation cels. The computer generated "in-between" drawings of the images..."
Bernard L. Cohen talks about terrorist scenarios regarding Plutonium in his book "The nuclear energy option : an alternative for the 90s." (Previously published as "Before It's Too Late : A Scientist's Case For Nuclear Energy.")
Slashdot Mirror
>There is also some problems with spherical aberration if they try to make the image too wide and...
Not to mention a problem with whiplash "if they try to make the image too wide." Not a joke. People move their heads a lot when viewing large desk-top monitors. If you view a wide screen you automatically move your head to view things on the extreme right or left. If the image moves with your head... chain reaction and... snap!
Of course, as Thad Starner points out, this is why HIT's body-stabilized-spatial-information-display research project is so important to the future of wearable computing (where monitor resolution isn't so important):
http://www.hitl.washington.edu/res earch/wearint/
>Can anyone think of a legitimate reason for choosing retinal scanning lasers over mini LCDs?
Retinal scanning lasers minimize the eyestrain associated with viewing a head-mounted-display 14-hours a day. This is critical for wearable-computer applications. None of the mini-LCDs pass this test.
>Some of you may remember those retinal scanning LED HMDs from as far back as 1990.
The LED HMDs from 1990 were made by ReflectionTech aka Reflection Technology. The product was called the P4. It was not retinal scanning. It was an excellent product -- by far the best head-mounted-display technology yet mass produced -- but not anywhere near the quality of VRDs.
Don't bother looking for the product -- you won't find it. ReflectionTech sold the patent recently to a company in Japan. If it's ever produced again you'll know about it.
Essential reading:
http://wearables.www.media.m it.edu/projects/wearables/
Transmitting w/o waves means transmitting on all frequencies at once. This is a square wave, but when they say "not a wave" they mean *not a sine wave*. To understand a little better how this works, take a sine wave and add the sine wave of its first harmonic to it. then add the sine wave of the second harmonic to those two. Keep doing this and you start to notice your waveform getting squarer and squarer. Do it infinitely and your waveform becomes perfectly square.
It's on purpose. Check the website. The makers of Matrix call it anime with live actors.
-Zoyd
>>>>>There are two competing approaches, one that is basically a morph, and the other with the multiple cameras. The Matrix used the multiple camera approach.The text of the *Bullet Time Walk Through* area of the Matrix site says the film used a technique combining both approaches listed above.
From the site: "A series of sophisticated still cameras was placed along the mapped path, each of which would shoot a single still photo. Then the photos were scanned into the computer, which created a strip of still images, similar to animation cels. The computer generated "in-between" drawings of the images..."
-Zoyd
The Twiddler rocks. I've had mine for about a year. For more on wearables, check out the FAQs, etc., at:
http://www.media.mit.edu/projects/wear ables/
http://www.media.mit.edu/projects/weara bles
http://www.media.mit.edu/projects/wearables/
I've been wondering what he's been up to after getting kicked out of Guns 'N Roses ten years ago!
Bernard L. Cohen talks about terrorist scenarios regarding Plutonium in his book "The nuclear energy option : an alternative for the 90s." (Previously published as "Before It's Too Late : A Scientist's Case For Nuclear Energy.")
-Zoyd