Developed by researchers at the University of Southern California, the 3D display system uses a spinning mirror to reflect images in all directions. Their 3D display is autosterescopic, meaning viewers don´t need to wear special viewing glasses to see the 3D effects. The display is also omnidirectional, so that multiple viewers can watch the display from all directions and heights.To achieve the high quality, the researchers modified a video projector to project images at more than 4,000 frames per second. Also, the display is interactive, as demonstrated in this video showing a user controlling the 3D human head with a remote control. It can update content at 200 Hz, or 200 times per second.
The video projector projects high-speed video onto the rapidly spinning mirror, and the projector and mirror are synchronized so that, as the mirror turns, it reflects a different image to viewers in all directions.
-from physorg.com
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