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

David Blinder; Peter Schelkens

doi:10.1117/12.2553918

1 April 2020 Accelerating phase-added stereogram calculations by coefficient grouping for digital holography

David Blinder, Peter Schelkens

Proceedings Volume 11353, Optics, Photonics and Digital Technologies for Imaging Applications VI; 1135303 (2020) https://doi.org/10.1117/12.2553918
Event: SPIE Photonics Europe, 2020, Online Only

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.

Conference Presentation

Citation Download Citation

David Blinder and Peter Schelkens "Accelerating phase-added stereogram calculations by coefficient grouping for digital holography", Proc. SPIE 11353, Optics, Photonics and Digital Technologies for Imaging Applications VI, 1135303 (1 April 2020); https://doi.org/10.1117/12.2553918

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available