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Dedicated processor for hologram calculation using sparse Fourier bases

Tijdschriftbijdrage - Tijdschriftartikel

Recently, a calculation method involving sparse point spread functions in the short-time Fourier transform (STFT) domain was proposed. In this paper, a dedicated processor using the STFT algorithm is described, which is implemented on a field-programmable gate array. All the operations in this algorithm are implemented using fixed-point arithmetic. Since this algorithm includes a trigonometric function and an error function, lookup tables (LUTs) are utilized to reduce the calculation costs. We have devised a dedicated circuit architecture that allows parallel operations. In addition, a central processing unit could generate holograms using the STFT-based algorithm with fixedpoint arithmetic and LUTs at a higher speed than the generation using floating-point arithmetic.
Tijdschrift: Appl. Optics
ISSN: 1559-128X
Issue: 26
Volume: 59
Pagina's: 8029-8037
Jaar van publicatie:2020
  • WoS Id: 000571484700037
  • Scopus Id: 85091806827
  • DOI: https://doi.org/10.1364/ao.397982
  • ORCID: /0000-0001-7054-0203/work/80251714
  • ORCID: /0000-0003-0908-1655/work/80251728
CSS-citation score:1
Toegankelijkheid:Closed