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DTSTAMP:20240214T070244Z
LOCATION:Meeting Room C4.8\, Level 4 (Convention Centre)
DTSTART;TZID=Australia/Melbourne:20231213T131500
DTEND;TZID=Australia/Melbourne:20231213T133000
UID:siggraphasia_SIGGRAPH Asia 2023_sess143_papers_606@linklings.com
SUMMARY:Multisource Holography
DESCRIPTION:Technical Communications, Technical Papers\n\nGrace Kuo, Flori
 an Schiffers, Douglas Lanman, Oliver Cossairt, and Nathan Matsuda (Reality
  Labs Research, Meta)\n\nHolographic displays promise several benefits inc
 luding high quality 3D imagery, accurate accommodation cues, and compact f
 orm-factors. However, holography relies on coherent illumination which can
  create undesirable speckle noise in the final image. Although smooth phas
 e holograms can be speckle-free, their non-uniform eyebox makes them impra
 ctical, and speckle mitigation with partially coherent sources also reduce
 s resolution. Averaging sequential frames for speckle reduction requires h
 igh speed modulators and consumes temporal bandwidth that may be needed el
 sewhere in the system.\n\nIn this work, we propose multisource holography,
  a novel architecture that uses an array of sources to suppress speckle in
  a single frame without sacrificing resolution. By using two spatial light
  modulators, arranged sequentially, each source in the array can be contro
 lled almost independently to create a version of the target content with d
 ifferent speckle. Speckle is then suppressed when the contributions from t
 he multiple sources are averaged at the image plane. We introduce an algor
 ithm to calculate multisource holograms, analyze the design space, and dem
 onstrate up to a 10 dB increase in peak signal-to-noise ratio compared to 
 an equivalent single source system. Finally, we validate the concept with 
 a benchtop experimental prototype by producing both 2D images and focal st
 acks with natural defocus cues.\n\nRegistration Category: Full Access\n\nS
 ession Chair: Yifan Peng (The University of Hong Kong (HKU))
URL:https://asia.siggraph.org/2023/full-program?id=papers_606&sess=sess143
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