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DTSTAMP:20260114T163632Z
LOCATION:Darling Harbour Theatre\, Level 2 (Convention Centre)
DTSTART;TZID=Australia/Melbourne:20231212T093000
DTEND;TZID=Australia/Melbourne:20231212T124500
UID:siggraphasia_SIGGRAPH Asia 2023_sess209_papers_606@linklings.com
SUMMARY:Multisource Holography
DESCRIPTION:Grace Kuo, Florian Schiffers, Douglas Lanman, Oliver Cossairt,
  and Nathan Matsuda (Reality Labs Research, Meta)\n\nHolographic displays 
 promise several benefits including high quality 3D imagery, accurate accom
 modation cues, and compact form-factors. However, holography relies on coh
 erent illumination which can create undesirable speckle noise in the final
  image. Although smooth phase holograms can be speckle-free, their non-uni
 form eyebox makes them impractical, and speckle mitigation with partially 
 coherent sources also reduces resolution. Averaging sequential frames for 
 speckle reduction requires high speed modulators and consumes temporal ban
 dwidth that may be needed elsewhere in the system.\n\nIn this work, we pro
 pose multisource holography, a novel architecture that uses an array of so
 urces to suppress speckle in a single frame without sacrificing resolution
 . By using two spatial light modulators, arranged sequentially, each sourc
 e in the array can be controlled almost independently to create a version 
 of the target content with different speckle. Speckle is then suppressed w
 hen the contributions from the multiple sources are averaged at the image 
 plane. We introduce an algorithm to calculate multisource holograms, analy
 ze the design space, and demonstrate up to a 10 dB increase in peak signal
 -to-noise ratio compared to an equivalent single source system. Finally, w
 e validate the concept with a benchtop experimental prototype by producing
  both 2D images and focal stacks with natural defocus cues.\n\nRegistratio
 n Category: Full Access, Enhanced Access, Trade Exhibitor, Experience Hall
  Exhibitor\n\n
URL:https://asia.siggraph.org/2023/full-program?id=papers_606&sess=sess209
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