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Proceedings Paper

Accelerating phase-added stereogram calculations by coefficient grouping for digital holography
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Paper Abstract

Computer generated holography (CGH) is a computationally intensive task, which requires the design of efficient algorithms for calculating realistic holograms in real-time. Sparse CGH algorithms address this challenge by computing holographic signals in a transform domain where they are sparse, thereby requiring only to update a small number of coefficients and speeding up calculations. However, the required memory access patterns form a bottleneck, limiting speed gains. We propose a novel technique for computing phase-added stereograms by grouping Fourier coefficients into sub-stereograms, mapping to contiguous cells in 3D space. We present various implementations of this algorithm, reporting speedup factors ranging from 3 to 30 depending on the devices’ computing capability, without compromising on quality. This enables real-time CGH for driving holographic displays for more complex scenes.

Paper Details

Date Published: 1 April 2020
PDF: 10 pages
Proc. SPIE 11353, Optics, Photonics and Digital Technologies for Imaging Applications VI, 1135303 (1 April 2020); doi: 10.1117/12.2553918
Show Author Affiliations
David Blinder, Vrije Univ. Brussel (Belgium)
Peter Schelkens, Vrije Univ. Brussel (Belgium)

Published in SPIE Proceedings Vol. 11353:
Optics, Photonics and Digital Technologies for Imaging Applications VI
Peter Schelkens; Tomasz Kozacki, Editor(s)

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