The holodeck is still a few years off, but this is an interesting step forward

The ICT Graphics Lab at USC has created a low-cost volumetric 3-D display that brings Princess Leia one step closer to begging Obi-Wan for help. The system projects high-speed video onto a rapidly spinning mirror. As the mirror turns, it reflects a different and accurate image to each potential viewer. (Video)

The process is not simple but can be defined through a few key concepts: Spinning mirrors, high-speed DLP Projections, and very precise math that figures out the correct axial perspective needed for a 360-degree image (even taking into account a viewer’s positioning.)

The rendering algorithm can recreate virtual and real scenes with correct occlusion, horizontal and vertical perspective, and shading. Close to 5,000 individual images are reflected every second within the surface area and create a real-space three-dimensional object. Video below.

Via Slippery Brick