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posted by martyb on Tuesday July 26 2016, @08:49AM   Printer-friendly
from the it's-done-by-smoke-and-mirrors,-but-without-the-smoke dept.

Researchers have created a glasses-free 3D display prototype that exploits the limited number of viewing angles offered by movie theaters:

In a new paper, a team from MIT's Computer Science and Artificial Intelligence Lab (CSAIL) and Israel's Weizmann Institute of Science have demonstrated a display that lets audiences watch 3-D films in a movie theater without extra eyewear. Dubbed "Cinema 3D," the prototype uses a special array of lenses and mirrors to enable viewers to watch a 3-D movie from any seat in a theater.

[...] The key insight with Cinema 3D is that people in movie theaters move their heads only over a very small range of angles, limited by the width of their seat. Thus, it is enough to display images to a narrow range of angles and replicate that to all seats in the theater. What Cinema 3D does, then, is encode multiple parallax barriers in one display, such that each viewer sees a parallax barrier tailored to their position. That range of views is then replicated across the theater by a series of mirrors and lenses within Cinema 3D's special optics system.

[...] Cinema 3D isn't particularly practical at the moment: The team's prototype requires 50 sets of mirrors and lenses, and yet is just barely larger than a pad of paper. But, in theory, the technology could work in any context in which 3-D visuals would be shown to multiple people at the same time, such as billboards or storefront advertisements. Matusik says that the team hopes to build a larger version of the display and to further refine the optics to continue to improve the image resolution.

Also at TechCrunch. MIT CSAIL video at YouTube (49 seconds).


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  • (Score: -1, Offtopic) by Anonymous Coward on Tuesday July 26 2016, @08:52AM

    by Anonymous Coward on Tuesday July 26 2016, @08:52AM (#380239)

    DHS/FBI/NSA gonna love this shit for gaslighting normals into becoming terrists. Keeping US fucking safe, from US!

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