3D Holograms with Pico Video Projectors Array
Researchers at the University of Southern California Institute for Creative Technologies in Playa Vista, CA, USA designed an array of small and inexpensive picoprojectors to recreate images in volume; each projector sends an image sligthly different from the previous one to the screen, recreating the illusion of volume, far better than with the two views only you have with stereoscopic systems. Technically, this setup is not an hologram and should be called "Lightfield display".
Learn how it works and watch the video presentation here under.
How it works
(Left) Top down view showing an array of picoprojectors behind a vertically
diffusing screen, achieving a horizontal-parallax-only display.
(Right) We simulate such an array by ﬂashing different views of the scene
along the arc from a single pico-projector. The camera records
the summed effect of these ﬂashes using long exposures.
A paper called "Prototyping a Light Field Display Involving Direct Observation of a Video Projector Array" is available here in pdf format on the USC web site.
About USC ITC
"Compelling stories, characters and special effects"
The University of Southern California Institute for Creative Technologies applies this winning Hollywood formula to benefit service members, students and society at large. An academic research institute, ICT brings film and game industry artists together with computer and social scientists to study and develop immersive media for military training, health therapies, science education and more." Visit USC ITC for more info.