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Holograms Help Protect Super Bowl
Apache4857 writes to tell us CNet is reporting that Homeland Security agents monitoring the Superbowl will be doing so in 3D. Using streams from two cameras, the LifeVision 3D system is able to project images onto a 20-inch screen that is equipped with a depth tube. This depth tube makes images appear to rise 30 inches off the screen and sink 30 inches into the screen allowing real world volumes and distances to be displayed accurately. Using this system security officials will be able to search sidewalks, monitor faces, and even peer under vehicles.
Looking at the rather skimpy article, it doesnt appear to be a hologram, any more then the special effects were in the movie it references.
holograms *require* interferrence patterns.. i dont see that happening with this product.
---- Booth was a patriot ----
I am a holographic engineer.
This is not a hologram because it is not creating an interference pattern. No phase information is stored.
To make a real hologram, you do need a monochromatic light source. Before lasers they used various lamps (mercury lamp etc) that illuminate at specific wavelengths. This does kinda work, but has a very short coherence length so is bad for making analogue holograms (a hologram of an actual object). Quite possibly a lamp could be used for copying holograms or for digital holography.
The only good thing about the Super Bowl is the commercials.
And you can download them from this site, too.