Layered 3D: Tomographic Image Synthesis for Attenuation-based Light Field and High Dynamic Range Displays

Gordon Wetzstein, Wolfgang Heidrich, Douglas Lanman, Ramesh Raskar

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

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 highcontrast 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 attenuationbased light field displays using an inexpensive fabrication method: separating multiple printed transparencies with acrylic sheets.

Original languageEnglish (US)
Pages (from-to)1-12
Number of pages12
JournalACM Transactions on Graphics
Volume30
Issue number4
DOIs
StatePublished - Jul 1 2011

Keywords

  • autostereoscopic 3D displays
  • computational displays
  • high dynamic range displays
  • light fields
  • tomography

ASJC Scopus subject areas

  • Computer Graphics and Computer-Aided Design

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