Fast calculation method for computer-generated cylindrical holograms based on the three-dimensional Fourier spectrum

Sando, Yusuke; Barada, Daisuke; Jackin, Boaz Jessie; Yatagai, Toyohiko

doi:10.1364/ol.38.005172

Cited by 21 publications

(4 citation statements)

References 11 publications

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“…A hologram can then be generated from diffraction calculations for the light passing from each sectional color 2-D image to the hologram plane. A 3-D Fourier-spectrum approach 88,89 can yield planar as well as cylindrical holograms. Table 2 summarizes advantages and disadvantages of three CGH-calculation methods: the point-cloud, polygon, and multiview-image methods.…”

Section: Other Methodsmentioning

confidence: 99%

Review of real-time reconstruction techniques for aerial-projection holographic displays

et al. 2018

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Electroholography enables the projection of three-dimensional (3-D) images using a spatial-light modulator. The extreme computational complexity and load involved in generating a hologram make realtime production of holograms difficult. Many methods have been proposed to overcome this challenge and realize real-time reconstruction of 3-D motion pictures. We review two real-time reconstruction techniques for aerial-projection holographic displays. The first reduces the computational load required for a hologram by using an image-type computer-generated hologram (CGH) because an image-type CGH is generated from a 3-D object that is located on or close to the hologram plane. The other technique parallelizes CGH calculation via a graphics processing unit by exploiting the independence of each pixel in the holographic plane. © The Authors.Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Section: Other Methodsmentioning

confidence: 99%

Review of real-time reconstruction techniques for aerial-projection holographic displays

et al. 2018

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“…Therefore, it can generate 360 • field of view. Then a fast calculation method of CCGH based on three dimensional Fourier spectrum is proposed [11], and the Fourier transformation of the kernel function involving this convolution integral is analytically performed using a Bessel function expansion [12], which greatly reduces the computation time and memory usage. Jackin et al proposed a fast method for calculating cylindrical holograms based on wave propagation in spectral domain [13].…”

Section: Introductionmentioning

confidence: 99%

Speckle Suppression Using Cylindrical Self-Diffraction for Cylindrical Phase-Only Hologram

Jin

Wang

et al. 2021

IEEE Photonics J.

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In the reconstruction of cylindrical phase-only hologram (POH), speckle noise caused by the addition of random phase is rarely discussed. Although some speckle noise suppression algorithms have been proposed for planar POH, it does not work well if they are directly applied to cylindrical POH. To solve this issue, the cylindrical self-diffraction iteration (CSDI) algorithm is proposed. This is an iteration algorithm based on the cylindrical selfdiffraction model which is a special case of the cylindrical backward-propagation model at a limit condition. Simulation results show that CSDI can suppress speckle noise and improve the quality of reconstructed images significantly. Furthermore, the proposed CSDI algorithm outperforms conventional algorithms, which work well in planar POH and are directly applied to cylindrical POH, in suppressing speckle noise for cylindrical POH. To our best knowledge, the models of cylindrical backward-propagation and cylindrical self-diffraction as well as the concept of CSDI are firstly proposed and applied to speckle suppression of cylindrical POH.

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“…The authors later enhanced this method with a hidden-surface removal algorithm 28 and applied it to the calculation of cylindrical holograms. 29 Since the calculation time of the second step only depends on the hologram resolution and not on the sampling of the scene, this approach enables the fast calculation of highly detailed scenes.…”

Section: Introductionmentioning

confidence: 99%

Real-time computer-generated hologram calculation using pre-computed angular spectra

Gilles¹,

Gioia

2020

Optics, Photonics and Digital Technologies for Imaging Applications VI

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Due to its ability to reproduce the correct focus cues, holography is considered as a promising display technology for Augmented Reality glasses. However, since it contains a large amount of data, the calculation of a hologram is a time-demanding process, resulting in prohibiting head-motion-to-photon latency. In this paper, we propose a real-time hologram calculation method based on two modules: an offline pre-computation module and an on-the-fly hologram synthesis module. In the offline calculation module, the omnidirectional light field scattered by each scene object is individually pre-computed and stored in a Look-Up Table (LUT). Then, in the hologram synthesis module, the light waves corresponding to the viewer's position and orientation are extracted from the LUT in real-time to compute the hologram. Contrarily to previously proposed methods, our approach handles several independent scene objects and arbitrary user positions and orientations. Experimental results show that the proposed method is able to compute full-HD holograms at more than 256 frames per second, enabling its use in Augmented Reality applications.

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Fast calculation method for computer-generated cylindrical holograms based on the three-dimensional Fourier spectrum

Cited by 21 publications

References 11 publications

Review of real-time reconstruction techniques for aerial-projection holographic displays

Review of real-time reconstruction techniques for aerial-projection holographic displays

Speckle Suppression Using Cylindrical Self-Diffraction for Cylindrical Phase-Only Hologram

Real-time computer-generated hologram calculation using pre-computed angular spectra

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