@inproceedings{9dface9c6884499cb090b65dc2ffdf28,
title = "Computing high quality phase-only holograms for holographic displays",
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.",
keywords = "Augmented reality, Holographic displays, Near eye display, Phase retrieval, Phase-only holograms, Vergence-accommodation conflict, Wide field of view",
author = "Praneeth Chakravarthula and Yifan Peng and Joel Kollin and Felix Heide and Henry Fuchs",
note = "Funding Information: The authors wish to thank Bernard Kress for lending the HOLOEYE LETO-I SLM, Roarke Horstmeyer for many fruitful discussions and also lending the laser diode controller, Andreas Georgiou and Nicolas Pegard for useful suggestions and Pavan Chandra Konda and Jim Mahaney for help with the hardware prototype and experimental captures. This work was partially supported by National Science Foundation (NSF) Grant # 1405847, by NSF Grant # 1840131, an unrestricted gift from Google, and by the BeingTogether Centre, a collaboration between Nanyang Technological University (NTU) Singapore and University of North Carolina (UNC) at Chapel Hill, supported by UNC and the Singapore National Research Foundation, Prime Minister's Office, Singapore under its International Research Centres in Singapore Funding Initiative. Funding Information: The authors wish to thank Bernard Kress for lending the HOLOEYE LETO-I SLM, Roarke Horstmeyer for many fruitful discussions and also lending the laser diode controller, Andreas Georgiou and Nicolas Pegard for useful suggestions and Pavan Chandra Konda and Jim Mahaney for help with the hardware prototype and experimental captures. This work was partially supported by National Science Foundation (NSF) Grant # 1405847, by NSF Grant # 1840131, an unrestricted gift from Google, and by the BeingTogether Centre, a collaboration between Nanyang Technological University (NTU) Singapore and University of North Carolina (UNC) at Chapel Hill, supported by UNC and the Singapore National Research Foundation, Prime Minister{\textquoteright}s Office, Singapore under its International Research Centres in Singapore Funding Initiative. Publisher Copyright: {\textcopyright} 2020 SPIE.; Optical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR) 2020 ; Conference date: 02-02-2020",
year = "2020",
doi = "10.1117/12.2547647",
language = "English (US)",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Kress, {Bernard C.} and Christophe Peroz",
booktitle = "Optical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR)",
address = "United States",
}