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Proceedings Paper

Computing high quality phase-only holograms for holographic displays
Author(s): Praneeth Chakravarthula; Yifan Peng; Joel Kollin; Felix Heide; Henry Fuchs
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Paper Abstract

Holography has demonstrated potential to achieve a wide field of view, focus supporting, optical see-through augmented reality display in an eyeglasses form factor. Although phase modulating spatial light modulators are becoming available, the phase-only hologram generation algorithms are still imprecise resulting in severe artifacts in the reconstructed imagery. Since the holographic phase retrieval problem is non-linear and non-convex and computationally expensive with the solutions being non-unique, the existing methods make several assumptions to make the phase-only hologram computation tractable. In this work, we deviate from any such approximations and solve the holographic phase retrieval problem as a quadratic problem using complex Wirtinger gradients and standard first-order optimization methods. Our approach results in high-quality phase hologram generation with at least an order of magnitude improvement over existing state-of-the-art approaches.

Paper Details

Date Published: 21 February 2020
PDF: 16 pages
Proc. SPIE 11310, Optical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR), 1131006 (21 February 2020); doi: 10.1117/12.2547647
Show Author Affiliations
Praneeth Chakravarthula, The Univ. of North Carolina at Chapel Hill (United States)
Yifan Peng, Stanford Univ. (United States)
Joel Kollin, Microsoft Corp. (United States)
Felix Heide, Princeton Univ. (United States)
Henry Fuchs, The Univ. of North Carolina at Chapel Hill (United States)


Published in SPIE Proceedings Vol. 11310:
Optical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR)
Bernard C. Kress; Christophe Peroz, Editor(s)

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