Tensor displays: compressive light field synthesis using multilayer displays with directional backlighting
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TensorDisplays.pdf
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15.99 MB
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Author(s)
Wetzstein, Gordon
Lanman, Douglas R.
Hirsch, Matthew Waggener
Raskar, Ramesh
Date Issued
July 2012
Journal
ACM Transactions on Graphics
Publisher
Association for Computing Machinery
Citation
Wetzstein, Gordon, Douglas Lanman, Matthew Hirsch, and Ramesh Raskar. “Tensor Displays.” ACM Transactions on Graphics 31, no. 4 (July 1, 2012): 1–11.
Version
Author's final manuscript
Abstract
We introduce tensor displays: a family of compressive light field displays comprising all architectures employing a stack of time-multiplexed, light-attenuating layers illuminated by uniform or directional backlighting (i.e., any low-resolution light field emitter). We show that the light field emitted by an N-layer, M-frame tensor display can be represented by an Nth-order, rank-M tensor. Using this representation we introduce a unified optimization framework, based on nonnegative tensor factorization (NTF), encompassing all tensor display architectures. This framework is the first to allow joint multilayer, multiframe light field decompositions, significantly reducing artifacts observed with prior multilayer-only and multiframe-only decompositions; it is also the first optimization method for designs combining multiple layers with directional backlighting. We verify the benefits and limitations of tensor displays by constructing a prototype using modified LCD panels and a custom integral imaging backlight. Our efficient, GPU-based NTF implementation enables interactive applications. Through simulations and experiments we show that tensor displays reveal practical architectures with greater depths of field, wider fields of view, and thinner form factors, compared to prior automultiscopic displays.
MIT Department
Massachusetts Institute of Technology. Media Laboratory
Program in Media Arts and Sciences (Massachusetts Institute of Technology)
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Creative Commons Attribution-Noncommercial-Share Alike
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1145/2185520.2185576
