Layered 3D: tomographic image synthesis for attenuation-based light field and high dynamic range displays
Author(s)Wetzstein, Gordon; Lanman, Douglas R.; Heidrich, Wolfgang; Raskar, Ramesh
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We develop tomographic techniques for image synthesis on displays composed of compact volumes of light-attenuating material. Such volumetric attenuators recreate a 4D light field or high-contrast 2D image when illuminated by a uniform backlight. Since arbitrary oblique views may be inconsistent with any single attenuator, iterative tomographic reconstruction minimizes the difference between the emitted and target light fields, subject to physical constraints on attenuation. As multi-layer generalizations of conventional parallax barriers, such displays are shown, both by theory and experiment, to exceed the performance of existing dual-layer architectures. For 3D display, spatial resolution, depth of field, and brightness are increased, compared to parallax barriers. For a plane at a fixed depth, our optimization also allows optimal construction of high dynamic range displays, confirming existing heuristics and providing the first extension to multiple, disjoint layers. We conclude by demonstrating the benefits and limitations of attenuation-based light field displays using an inexpensive fabrication method: separating multiple printed transparencies with acrylic sheets.
DepartmentMassachusetts Institute of Technology. Media Laboratory; Program in Media Arts and Sciences (Massachusetts Institute of Technology)
ACM SIGGRAPH International Conference and Exhibition on Computer Graphics and Interactive Techniques 2011
Association for Computing Machinery / ACM SIGGRAPH
Wetzstein, Gordon et al. “Layered 3D: tomographic image synthesis for attenuation-based light field and high dynamic range.” ACM SIGGRAPH 2011 papers, Article no. 95. Copyright © 2011, Association for Computing Machinery, Inc.
Author's final manuscript