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2010

Content-adaptive parallax barriers: optimizing dual-layer 3D displays using low-rank light field factorization

8 years 6 months ago
Content-adaptive parallax barriers: optimizing dual-layer 3D displays using low-rank light field factorization
We optimize automultiscopic displays built by stacking a pair of modified LCD panels. To date, such dual-stacked LCDs have used heuristic parallax barriers for view-dependent imagery: the front LCD shows a fixed array of slits or pinholes, independent of the multi-view content. While prior works adapt the spacing between slits or pinholes, depending on viewer position, we show both layers can also be adapted to the multi-view content, increasing brightness and refresh rate. Unlike conventional barriers, both masks are allowed to exhibit non-binary opacities. It is shown that any 4D light field emitted by a dual-stacked LCD is the tensor product of two 2D masks. Thus, any pair of 1D masks only achieves a rank-1 approximation of a 2D light field. Temporal multiplexing of masks is shown to achieve higher-rank approximations. Non-negative matrix factorization (NMF) minimizes the weighted Euclidean distance between a target light field and that emitted by the display. Simulations and exper...
Douglas Lanman, Matthew Hirsch, Yunhee Kim, Ramesh
Added 22 May 2011
Updated 22 May 2011
Type Journal
Year 2010
Where TOG
Authors Douglas Lanman, Matthew Hirsch, Yunhee Kim, Ramesh Raskar
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