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

Onderzoeksoutput: Conference paper


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.
Originele taal-2English
TitelProc. SPIE 11353, Optics, Photonics and Digital Technologies for Imaging Applications VI
Aantal pagina's10
StatusPublished - 1 apr 2020
Evenement SPIE Photonics Europe, 2020 - online, Strasbourg, France
Duur: 6 apr 202010 apr 2020


Conference SPIE Photonics Europe, 2020
Internet adres


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